./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc69f8-7465-41a1-9294-e98d942d5580/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc69f8-7465-41a1-9294-e98d942d5580/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_8ebc69f8-7465-41a1-9294-e98d942d5580/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc69f8-7465-41a1-9294-e98d942d5580/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc69f8-7465-41a1-9294-e98d942d5580/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_8ebc69f8-7465-41a1-9294-e98d942d5580/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 8521353bcf4bae83665566564f0550ca2d5ed2f2d2c87d1236006cfbb2433fe4 --- 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 03:47:33,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:47:33,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:47:33,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:47:33,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:47:33,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:47:33,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:47:33,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:47:33,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:47:33,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:47:33,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:47:33,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:47:33,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:47:33,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:47:33,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:47:33,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:47:33,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:47:33,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:47:33,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:47:33,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:47:33,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:47:33,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:47:33,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:47:33,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:47:33,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:47:33,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:47:33,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:47:33,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:47:33,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:47:33,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:47:33,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:47:33,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:47:33,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:47:33,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:47:33,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:47:33,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:47:33,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:47:33,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:47:33,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:47:33,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:47:33,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:47:33,686 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc69f8-7465-41a1-9294-e98d942d5580/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:47:33,736 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:47:33,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:47:33,738 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:47:33,738 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:47:33,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:47:33,739 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:47:33,740 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:47:33,740 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:47:33,740 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:47:33,741 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:47:33,742 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:47:33,742 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:47:33,743 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:47:33,743 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:47:33,743 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:47:33,744 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:47:33,744 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:47:33,744 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:47:33,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:47:33,745 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:47:33,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:47:33,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:47:33,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:47:33,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:47:33,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:47:33,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:47:33,747 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:47:33,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:47:33,750 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:47:33,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:47:33,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:47:33,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:47:33,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:47:33,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:47:33,752 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:47:33,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:47:33,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:47:33,753 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:47:33,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:47:33,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:47:33,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:47:33,754 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_8ebc69f8-7465-41a1-9294-e98d942d5580/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc69f8-7465-41a1-9294-e98d942d5580/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8521353bcf4bae83665566564f0550ca2d5ed2f2d2c87d1236006cfbb2433fe4 [2022-11-03 03:47:34,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:47:34,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:47:34,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:47:34,125 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:47:34,126 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:47:34,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc69f8-7465-41a1-9294-e98d942d5580/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c [2022-11-03 03:47:34,225 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc69f8-7465-41a1-9294-e98d942d5580/bin/utaipan-7li7fVZpFI/data/dc85b4790/1a5044745ce84be08c9e7d28cfe1ef53/FLAG3a4f4551c [2022-11-03 03:47:34,896 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:47:34,899 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc69f8-7465-41a1-9294-e98d942d5580/sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c [2022-11-03 03:47:34,923 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc69f8-7465-41a1-9294-e98d942d5580/bin/utaipan-7li7fVZpFI/data/dc85b4790/1a5044745ce84be08c9e7d28cfe1ef53/FLAG3a4f4551c [2022-11-03 03:47:35,126 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc69f8-7465-41a1-9294-e98d942d5580/bin/utaipan-7li7fVZpFI/data/dc85b4790/1a5044745ce84be08c9e7d28cfe1ef53 [2022-11-03 03:47:35,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:47:35,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:47:35,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:47:35,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:47:35,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:47:35,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:47:35" (1/1) ... [2022-11-03 03:47:35,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec2e3c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:35, skipping insertion in model container [2022-11-03 03:47:35,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:47:35" (1/1) ... [2022-11-03 03:47:35,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:47:35,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:47:35,607 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_8ebc69f8-7465-41a1-9294-e98d942d5580/sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c[6162,6175] [2022-11-03 03:47:35,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:47:35,735 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:47:35,772 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_8ebc69f8-7465-41a1-9294-e98d942d5580/sv-benchmarks/c/product-lines/minepump_spec1_product52.cil.c[6162,6175] [2022-11-03 03:47:35,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:47:35,837 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:47:35,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:35 WrapperNode [2022-11-03 03:47:35,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:47:35,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:47:35,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:47:35,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:47:35,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:35" (1/1) ... [2022-11-03 03:47:35,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:35" (1/1) ... [2022-11-03 03:47:35,898 INFO L138 Inliner]: procedures = 57, calls = 157, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 257 [2022-11-03 03:47:35,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:47:35,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:47:35,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:47:35,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:47:35,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:35" (1/1) ... [2022-11-03 03:47:35,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:35" (1/1) ... [2022-11-03 03:47:35,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:35" (1/1) ... [2022-11-03 03:47:35,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:35" (1/1) ... [2022-11-03 03:47:35,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:35" (1/1) ... [2022-11-03 03:47:35,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:35" (1/1) ... [2022-11-03 03:47:35,948 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:35" (1/1) ... [2022-11-03 03:47:35,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:35" (1/1) ... [2022-11-03 03:47:35,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:47:35,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:47:35,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:47:35,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:47:35,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:35" (1/1) ... [2022-11-03 03:47:35,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:47:35,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc69f8-7465-41a1-9294-e98d942d5580/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:47:36,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc69f8-7465-41a1-9294-e98d942d5580/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:47:36,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc69f8-7465-41a1-9294-e98d942d5580/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:47:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:47:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-03 03:47:36,054 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-03 03:47:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-03 03:47:36,054 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-03 03:47:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-03 03:47:36,054 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-03 03:47:36,055 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-03 03:47:36,055 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-03 03:47:36,055 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-03 03:47:36,055 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-03 03:47:36,055 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-03 03:47:36,055 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-03 03:47:36,055 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-03 03:47:36,056 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-03 03:47:36,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:47:36,056 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-03 03:47:36,056 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-03 03:47:36,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:47:36,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:47:36,148 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:47:36,150 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:47:36,739 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:47:36,989 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:47:36,989 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 03:47:36,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:47:36 BoogieIcfgContainer [2022-11-03 03:47:36,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:47:37,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:47:37,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:47:37,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:47:37,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:47:35" (1/3) ... [2022-11-03 03:47:37,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1229e6e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:47:37, skipping insertion in model container [2022-11-03 03:47:37,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:47:35" (2/3) ... [2022-11-03 03:47:37,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1229e6e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:47:37, skipping insertion in model container [2022-11-03 03:47:37,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:47:36" (3/3) ... [2022-11-03 03:47:37,009 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2022-11-03 03:47:37,033 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:47:37,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:47:37,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:47:37,133 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;@14ef9492, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:47:37,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:47:37,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 40 states have (on average 1.45) internal successors, (58), 49 states have internal predecessors, (58), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 03:47:37,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 03:47:37,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:37,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:37,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:37,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:37,165 INFO L85 PathProgramCache]: Analyzing trace with hash -2105897514, now seen corresponding path program 1 times [2022-11-03 03:47:37,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:37,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847642763] [2022-11-03 03:47:37,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:37,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:37,458 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 03:47:37,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:37,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847642763] [2022-11-03 03:47:37,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847642763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:37,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:37,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:47:37,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467187280] [2022-11-03 03:47:37,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:37,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:47:37,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:37,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:47:37,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:47:37,513 INFO L87 Difference]: Start difference. First operand has 63 states, 40 states have (on average 1.45) internal successors, (58), 49 states have internal predecessors, (58), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:47:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:37,638 INFO L93 Difference]: Finished difference Result 124 states and 169 transitions. [2022-11-03 03:47:37,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:47:37,641 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-03 03:47:37,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:37,652 INFO L225 Difference]: With dead ends: 124 [2022-11-03 03:47:37,652 INFO L226 Difference]: Without dead ends: 58 [2022-11-03 03:47:37,656 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:47:37,660 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:37,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:47:37,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-03 03:47:37,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-03 03:47:37,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 45 states have internal predecessors, (50), 13 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 03:47:37,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 75 transitions. [2022-11-03 03:47:37,707 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 75 transitions. Word has length 16 [2022-11-03 03:47:37,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:37,707 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 75 transitions. [2022-11-03 03:47:37,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:47:37,708 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 75 transitions. [2022-11-03 03:47:37,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 03:47:37,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:37,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:37,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:47:37,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:37,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:37,712 INFO L85 PathProgramCache]: Analyzing trace with hash 2078700205, now seen corresponding path program 1 times [2022-11-03 03:47:37,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:37,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209545506] [2022-11-03 03:47:37,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:37,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:37,908 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 03:47:37,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:37,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209545506] [2022-11-03 03:47:37,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209545506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:37,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:37,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:47:37,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591610637] [2022-11-03 03:47:37,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:37,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:47:37,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:37,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:47:37,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:37,918 INFO L87 Difference]: Start difference. First operand 58 states and 75 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:47:37,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:37,974 INFO L93 Difference]: Finished difference Result 88 states and 112 transitions. [2022-11-03 03:47:37,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:47:37,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-03 03:47:37,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:37,981 INFO L225 Difference]: With dead ends: 88 [2022-11-03 03:47:37,982 INFO L226 Difference]: Without dead ends: 50 [2022-11-03 03:47:37,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:37,986 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 14 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:37,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 82 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:47:37,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-03 03:47:37,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-11-03 03:47:38,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.375) internal successors, (44), 40 states have internal predecessors, (44), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 03:47:38,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2022-11-03 03:47:38,008 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 17 [2022-11-03 03:47:38,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:38,010 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2022-11-03 03:47:38,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 03:47:38,011 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2022-11-03 03:47:38,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:47:38,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:38,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:38,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:47:38,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:38,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:38,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1923538454, now seen corresponding path program 1 times [2022-11-03 03:47:38,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:38,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604260196] [2022-11-03 03:47:38,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:38,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:38,110 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 03:47:38,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:38,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604260196] [2022-11-03 03:47:38,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604260196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:38,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:38,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:47:38,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513273216] [2022-11-03 03:47:38,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:38,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:47:38,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:38,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:47:38,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:38,114 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 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) [2022-11-03 03:47:38,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:38,193 INFO L93 Difference]: Finished difference Result 146 states and 189 transitions. [2022-11-03 03:47:38,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:47:38,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 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 20 [2022-11-03 03:47:38,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:38,196 INFO L225 Difference]: With dead ends: 146 [2022-11-03 03:47:38,196 INFO L226 Difference]: Without dead ends: 98 [2022-11-03 03:47:38,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:47:38,198 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 58 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:38,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 112 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:47:38,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-03 03:47:38,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2022-11-03 03:47:38,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 60 states have (on average 1.3833333333333333) internal successors, (83), 75 states have internal predecessors, (83), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (20), 13 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-03 03:47:38,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 123 transitions. [2022-11-03 03:47:38,220 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 123 transitions. Word has length 20 [2022-11-03 03:47:38,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:38,221 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 123 transitions. [2022-11-03 03:47:38,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 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) [2022-11-03 03:47:38,222 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 123 transitions. [2022-11-03 03:47:38,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 03:47:38,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:38,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:38,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:47:38,224 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:38,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:38,225 INFO L85 PathProgramCache]: Analyzing trace with hash -578357288, now seen corresponding path program 1 times [2022-11-03 03:47:38,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:38,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756216597] [2022-11-03 03:47:38,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:38,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:38,372 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 03:47:38,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:38,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756216597] [2022-11-03 03:47:38,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756216597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:38,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:38,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:47:38,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165062955] [2022-11-03 03:47:38,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:38,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:47:38,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:38,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:47:38,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:47:38,376 INFO L87 Difference]: Start difference. First operand 95 states and 123 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-11-03 03:47:38,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:38,570 INFO L93 Difference]: Finished difference Result 279 states and 366 transitions. [2022-11-03 03:47:38,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:47:38,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 23 [2022-11-03 03:47:38,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:38,581 INFO L225 Difference]: With dead ends: 279 [2022-11-03 03:47:38,581 INFO L226 Difference]: Without dead ends: 186 [2022-11-03 03:47:38,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:47:38,589 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 42 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:38,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 253 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:47:38,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-03 03:47:38,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 178. [2022-11-03 03:47:38,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 113 states have (on average 1.3716814159292035) internal successors, (155), 140 states have internal predecessors, (155), 38 states have call successors, (38), 26 states have call predecessors, (38), 26 states have return successors, (38), 24 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-03 03:47:38,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 231 transitions. [2022-11-03 03:47:38,652 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 231 transitions. Word has length 23 [2022-11-03 03:47:38,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:38,653 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 231 transitions. [2022-11-03 03:47:38,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-11-03 03:47:38,654 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 231 transitions. [2022-11-03 03:47:38,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 03:47:38,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:38,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:38,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:47:38,660 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:38,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:38,660 INFO L85 PathProgramCache]: Analyzing trace with hash -767427665, now seen corresponding path program 1 times [2022-11-03 03:47:38,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:38,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073138614] [2022-11-03 03:47:38,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:38,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:38,927 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 03:47:38,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:38,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073138614] [2022-11-03 03:47:38,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073138614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:38,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:38,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:47:38,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454626455] [2022-11-03 03:47:38,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:38,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:47:38,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:38,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:47:38,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:47:38,930 INFO L87 Difference]: Start difference. First operand 178 states and 231 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2022-11-03 03:47:39,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:39,042 INFO L93 Difference]: Finished difference Result 494 states and 658 transitions. [2022-11-03 03:47:39,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:47:39,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 26 [2022-11-03 03:47:39,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:39,046 INFO L225 Difference]: With dead ends: 494 [2022-11-03 03:47:39,046 INFO L226 Difference]: Without dead ends: 318 [2022-11-03 03:47:39,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:47:39,049 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 35 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:39,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 156 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:47:39,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-11-03 03:47:39,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 308. [2022-11-03 03:47:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 207 states have (on average 1.2995169082125604) internal successors, (269), 232 states have internal predecessors, (269), 52 states have call successors, (52), 48 states have call predecessors, (52), 48 states have return successors, (68), 46 states have call predecessors, (68), 52 states have call successors, (68) [2022-11-03 03:47:39,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 389 transitions. [2022-11-03 03:47:39,099 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 389 transitions. Word has length 26 [2022-11-03 03:47:39,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:39,099 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 389 transitions. [2022-11-03 03:47:39,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2022-11-03 03:47:39,100 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 389 transitions. [2022-11-03 03:47:39,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 03:47:39,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:39,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:39,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:47:39,103 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:39,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:39,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1847193089, now seen corresponding path program 1 times [2022-11-03 03:47:39,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:39,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922288315] [2022-11-03 03:47:39,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:39,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:47:39,641 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 03:47:39,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:47:39,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922288315] [2022-11-03 03:47:39,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922288315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:47:39,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:47:39,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 03:47:39,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022587709] [2022-11-03 03:47:39,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:47:39,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:47:39,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:47:39,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:47:39,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:47:39,646 INFO L87 Difference]: Start difference. First operand 308 states and 389 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:47:40,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:47:40,113 INFO L93 Difference]: Finished difference Result 918 states and 1171 transitions. [2022-11-03 03:47:40,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:47:40,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2022-11-03 03:47:40,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:47:40,125 INFO L225 Difference]: With dead ends: 918 [2022-11-03 03:47:40,125 INFO L226 Difference]: Without dead ends: 612 [2022-11-03 03:47:40,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:47:40,132 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 181 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:47:40,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 288 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:47:40,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-11-03 03:47:40,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 532. [2022-11-03 03:47:40,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 371 states have (on average 1.280323450134771) internal successors, (475), 398 states have internal predecessors, (475), 78 states have call successors, (78), 74 states have call predecessors, (78), 82 states have return successors, (102), 78 states have call predecessors, (102), 78 states have call successors, (102) [2022-11-03 03:47:40,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 655 transitions. [2022-11-03 03:47:40,227 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 655 transitions. Word has length 31 [2022-11-03 03:47:40,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:47:40,227 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 655 transitions. [2022-11-03 03:47:40,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:47:40,228 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 655 transitions. [2022-11-03 03:47:40,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 03:47:40,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:47:40,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:40,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:47:40,240 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:47:40,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:47:40,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1625142665, now seen corresponding path program 1 times [2022-11-03 03:47:40,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:47:40,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244926366] [2022-11-03 03:47:40,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:47:40,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:47:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:47:40,284 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 03:47:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:47:40,350 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 03:47:40,351 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 03:47:40,353 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:47:40,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:47:40,358 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:47:40,363 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:47:40,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:47:40 BoogieIcfgContainer [2022-11-03 03:47:40,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:47:40,442 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:47:40,442 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:47:40,442 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:47:40,442 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:47:36" (3/4) ... [2022-11-03 03:47:40,445 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 03:47:40,548 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc69f8-7465-41a1-9294-e98d942d5580/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 03:47:40,548 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:47:40,549 INFO L158 Benchmark]: Toolchain (without parser) took 5415.32ms. Allocated memory was 98.6MB in the beginning and 155.2MB in the end (delta: 56.6MB). Free memory was 65.0MB in the beginning and 78.7MB in the end (delta: -13.7MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. [2022-11-03 03:47:40,549 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 98.6MB. Free memory is still 52.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:47:40,550 INFO L158 Benchmark]: CACSL2BoogieTranslator took 700.66ms. Allocated memory is still 98.6MB. Free memory was 64.8MB in the beginning and 63.4MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 03:47:40,550 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.85ms. Allocated memory is still 98.6MB. Free memory was 63.4MB in the beginning and 61.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:47:40,551 INFO L158 Benchmark]: Boogie Preprocessor took 60.79ms. Allocated memory is still 98.6MB. Free memory was 61.0MB in the beginning and 59.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:47:40,551 INFO L158 Benchmark]: RCFGBuilder took 1035.19ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 59.3MB in the beginning and 90.5MB in the end (delta: -31.2MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-11-03 03:47:40,552 INFO L158 Benchmark]: TraceAbstraction took 3440.33ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 89.7MB in the beginning and 83.0MB in the end (delta: 6.8MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2022-11-03 03:47:40,552 INFO L158 Benchmark]: Witness Printer took 106.34ms. Allocated memory is still 155.2MB. Free memory was 83.0MB in the beginning and 78.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 03:47:40,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 98.6MB. Free memory is still 52.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 700.66ms. Allocated memory is still 98.6MB. Free memory was 64.8MB in the beginning and 63.4MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.85ms. Allocated memory is still 98.6MB. Free memory was 63.4MB in the beginning and 61.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.79ms. Allocated memory is still 98.6MB. Free memory was 61.0MB in the beginning and 59.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1035.19ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 59.3MB in the beginning and 90.5MB in the end (delta: -31.2MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3440.33ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 89.7MB in the beginning and 83.0MB in the end (delta: 6.8MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. * Witness Printer took 106.34ms. Allocated memory is still 155.2MB. Free memory was 83.0MB in the beginning and 78.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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: 393]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L58] int waterLevel = 1; [L59] int methaneLevelCritical = 0; [L168] int pumpRunning = 0; [L169] int systemActive = 1; [L468] int cleanupTimeShifts = 4; [L762] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L544] int retValue_acc ; [L545] int tmp ; [L549] FCALL select_helpers() [L550] FCALL select_features() [L551] CALL, EXPR valid_product() [L985] int retValue_acc ; [L988] retValue_acc = 1 [L989] return (retValue_acc); [L551] RET, EXPR valid_product() [L551] tmp = valid_product() [L553] COND TRUE \read(tmp) [L555] FCALL setup() [L556] CALL runTest() [L535] CALL test() [L400] int splverifierCounter ; [L401] int tmp ; [L402] int tmp___0 ; [L403] int tmp___1 ; [L404] int tmp___2 ; [L407] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L409] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L411] COND TRUE splverifierCounter < 4 [L417] tmp = __VERIFIER_nondet_int() [L419] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L421] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L76] COND TRUE waterLevel < 2 [L77] waterLevel = waterLevel + 1 [L421] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L427] tmp___0 = __VERIFIER_nondet_int() [L429] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L431] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L88] COND FALSE !(\read(methaneLevelCritical)) [L91] methaneLevelCritical = 1 [L431] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L437] tmp___2 = __VERIFIER_nondet_int() [L439] COND TRUE \read(tmp___2) [L441] CALL startSystem() [L384] systemActive = 1 [L441] RET startSystem() [L456] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L176] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L183] COND TRUE \read(systemActive) [L185] CALL processEnvironment() [L231] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L234] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L249] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L205] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L208] COND TRUE ! pumpRunning [L210] CALL, EXPR isHighWaterLevel() [L328] int retValue_acc ; [L329] int tmp ; [L330] int tmp___0 ; [L334] CALL, EXPR isHighWaterSensorDry() [L138] int retValue_acc ; [L141] COND FALSE !(waterLevel < 2) [L145] retValue_acc = 0 [L146] return (retValue_acc); [L334] RET, EXPR isHighWaterSensorDry() [L334] tmp = isHighWaterSensorDry() [L336] COND FALSE !(\read(tmp)) [L339] tmp___0 = 1 [L341] retValue_acc = tmp___0 [L342] return (retValue_acc); [L210] RET, EXPR isHighWaterLevel() [L210] tmp = isHighWaterLevel() [L212] COND TRUE \read(tmp) [L214] CALL activatePump() [L259] pumpRunning = 1 [L214] RET activatePump() [L249] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L185] RET processEnvironment() [L191] CALL __utac_acc__Specification1_spec__1() [L568] int tmp ; [L569] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L573] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L97] int retValue_acc ; [L100] retValue_acc = methaneLevelCritical [L101] return (retValue_acc); [L573] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L573] tmp = isMethaneLevelCritical() [L575] COND TRUE \read(tmp) [L577] CALL, EXPR isPumpRunning() [L283] int retValue_acc ; [L286] retValue_acc = pumpRunning [L287] return (retValue_acc); [L577] RET, EXPR isPumpRunning() [L577] tmp___0 = isPumpRunning() [L579] COND TRUE \read(tmp___0) [L581] CALL __automaton_fail() [L393] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 337 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 330 mSDsluCounter, 954 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 703 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 438 IncrementalHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 381 mSDtfsCounter, 438 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=532occurred in iteration=6, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 101 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 127 ConstructedInterpolants, 0 QuantifiedInterpolants, 322 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 RESULT: Ultimate proved your program to be incorrect! [2022-11-03 03:47:40,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ebc69f8-7465-41a1-9294-e98d942d5580/bin/utaipan-7li7fVZpFI/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