./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/bin/utaipan-EQgc7hIp5V --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 e0a38d188f2630eb8c92d710d8937425c14dd1581e9216671e138a935f7e01f2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:02:53,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:02:53,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:02:53,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:02:53,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:02:53,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:02:53,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:02:53,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:02:53,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:02:53,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:02:53,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:02:53,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:02:53,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:02:53,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:02:53,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:02:53,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:02:53,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:02:53,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:02:53,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:02:53,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:02:53,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:02:53,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:02:53,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:02:53,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:02:53,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:02:53,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:02:53,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:02:53,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:02:53,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:02:53,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:02:53,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:02:53,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:02:53,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:02:53,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:02:53,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:02:53,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:02:53,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:02:53,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:02:53,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:02:53,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:02:53,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:02:53,690 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:02:53,754 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:02:53,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:02:53,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:02:53,756 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:02:53,765 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:02:53,766 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:02:53,766 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:02:53,766 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:02:53,767 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:02:53,767 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:02:53,768 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:02:53,769 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:02:53,769 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:02:53,770 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:02:53,770 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:02:53,770 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:02:53,771 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:02:53,771 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:02:53,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:02:53,772 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:02:53,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:02:53,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:02:53,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:02:53,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:02:53,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:02:53,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:02:53,777 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:02:53,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:02:53,777 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:02:53,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:02:53,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:02:53,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:02:53,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:02:53,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:02:53,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:02:53,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:02:53,780 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:02:53,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:02:53,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:02:53,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:02:53,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:02:53,782 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0a38d188f2630eb8c92d710d8937425c14dd1581e9216671e138a935f7e01f2 [2021-11-23 02:02:54,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:02:54,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:02:54,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:02:54,181 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:02:54,182 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:02:54,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/minepump_spec3_product23.cil.c [2021-11-23 02:02:54,293 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/bin/utaipan-EQgc7hIp5V/data/e5d2eb719/8aafe1355b7042ffad95808af703b81d/FLAG89f337098 [2021-11-23 02:02:54,992 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:02:54,993 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/sv-benchmarks/c/product-lines/minepump_spec3_product23.cil.c [2021-11-23 02:02:55,029 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/bin/utaipan-EQgc7hIp5V/data/e5d2eb719/8aafe1355b7042ffad95808af703b81d/FLAG89f337098 [2021-11-23 02:02:55,290 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/bin/utaipan-EQgc7hIp5V/data/e5d2eb719/8aafe1355b7042ffad95808af703b81d [2021-11-23 02:02:55,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:02:55,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:02:55,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:02:55,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:02:55,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:02:55,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:02:55" (1/1) ... [2021-11-23 02:02:55,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d9f401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:55, skipping insertion in model container [2021-11-23 02:02:55,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:02:55" (1/1) ... [2021-11-23 02:02:55,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:02:55,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:02:55,694 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_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/sv-benchmarks/c/product-lines/minepump_spec3_product23.cil.c[8087,8100] [2021-11-23 02:02:55,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:02:55,808 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:02:55,901 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_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/sv-benchmarks/c/product-lines/minepump_spec3_product23.cil.c[8087,8100] [2021-11-23 02:02:55,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:02:55,999 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:02:56,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:56 WrapperNode [2021-11-23 02:02:56,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:02:56,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:02:56,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:02:56,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:02:56,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:56" (1/1) ... [2021-11-23 02:02:56,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:56" (1/1) ... [2021-11-23 02:02:56,101 INFO L137 Inliner]: procedures = 54, calls = 156, calls flagged for inlining = 21, calls inlined = 18, statements flattened = 248 [2021-11-23 02:02:56,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:02:56,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:02:56,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:02:56,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:02:56,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:56" (1/1) ... [2021-11-23 02:02:56,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:56" (1/1) ... [2021-11-23 02:02:56,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:56" (1/1) ... [2021-11-23 02:02:56,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:56" (1/1) ... [2021-11-23 02:02:56,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:56" (1/1) ... [2021-11-23 02:02:56,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:56" (1/1) ... [2021-11-23 02:02:56,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:56" (1/1) ... [2021-11-23 02:02:56,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:02:56,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:02:56,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:02:56,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:02:56,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:56" (1/1) ... [2021-11-23 02:02:56,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:02:56,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:02:56,230 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:02:56,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:02:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:02:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-23 02:02:56,292 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-23 02:02:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-23 02:02:56,293 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-23 02:02:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-23 02:02:56,293 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-23 02:02:56,293 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-11-23 02:02:56,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-11-23 02:02:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-23 02:02:56,294 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-23 02:02:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2021-11-23 02:02:56,294 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2021-11-23 02:02:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-11-23 02:02:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-11-23 02:02:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:02:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-23 02:02:56,296 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-23 02:02:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:02:56,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:02:56,390 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:02:56,391 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:02:56,821 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:02:56,914 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:02:56,914 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 02:02:56,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:02:56 BoogieIcfgContainer [2021-11-23 02:02:56,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:02:56,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:02:56,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:02:56,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:02:56,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:02:55" (1/3) ... [2021-11-23 02:02:56,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0ee702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:02:56, skipping insertion in model container [2021-11-23 02:02:56,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:56" (2/3) ... [2021-11-23 02:02:56,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0ee702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:02:56, skipping insertion in model container [2021-11-23 02:02:56,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:02:56" (3/3) ... [2021-11-23 02:02:56,968 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product23.cil.c [2021-11-23 02:02:56,975 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:02:56,975 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:02:57,089 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:02:57,104 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:02:57,104 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:02:57,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 51 states have internal predecessors, (61), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 02:02:57,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 02:02:57,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:02:57,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:02:57,141 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:02:57,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:02:57,148 INFO L85 PathProgramCache]: Analyzing trace with hash -840786460, now seen corresponding path program 1 times [2021-11-23 02:02:57,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:02:57,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080858974] [2021-11-23 02:02:57,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:02:57,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:02:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:02:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:02:57,392 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:02:57,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080858974] [2021-11-23 02:02:57,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080858974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:02:57,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:02:57,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:02:57,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571636262] [2021-11-23 02:02:57,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:02:57,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:02:57,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:02:57,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:02:57,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:02:57,445 INFO L87 Difference]: Start difference. First operand has 67 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 51 states have internal predecessors, (61), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2021-11-23 02:02:57,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:02:57,535 INFO L93 Difference]: Finished difference Result 132 states and 183 transitions. [2021-11-23 02:02:57,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:02:57,539 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 [2021-11-23 02:02:57,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:02:57,551 INFO L225 Difference]: With dead ends: 132 [2021-11-23 02:02:57,552 INFO L226 Difference]: Without dead ends: 62 [2021-11-23 02:02:57,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:02:57,561 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:02:57,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:02:57,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-23 02:02:57,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-11-23 02:02:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 39 states have (on average 1.358974358974359) internal successors, (53), 47 states have internal predecessors, (53), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-23 02:02:57,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2021-11-23 02:02:57,647 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 17 [2021-11-23 02:02:57,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:02:57,648 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2021-11-23 02:02:57,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2021-11-23 02:02:57,649 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2021-11-23 02:02:57,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:02:57,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:02:57,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:02:57,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:02:57,655 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:02:57,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:02:57,656 INFO L85 PathProgramCache]: Analyzing trace with hash -92670350, now seen corresponding path program 1 times [2021-11-23 02:02:57,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:02:57,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342231341] [2021-11-23 02:02:57,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:02:57,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:02:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:02:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:02:57,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:02:57,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342231341] [2021-11-23 02:02:57,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342231341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:02:57,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:02:57,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:02:57,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063929677] [2021-11-23 02:02:57,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:02:57,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:02:57,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:02:57,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:02:57,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:02:57,763 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-11-23 02:02:57,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:02:57,873 INFO L93 Difference]: Finished difference Result 96 states and 126 transitions. [2021-11-23 02:02:57,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:02:57,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 18 [2021-11-23 02:02:57,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:02:57,878 INFO L225 Difference]: With dead ends: 96 [2021-11-23 02:02:57,881 INFO L226 Difference]: Without dead ends: 54 [2021-11-23 02:02:57,882 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:02:57,885 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 14 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:02:57,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 97 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:02:57,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-23 02:02:57,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-11-23 02:02:57,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 42 states have internal predecessors, (47), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 8 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 02:02:57,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions. [2021-11-23 02:02:57,912 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 71 transitions. Word has length 18 [2021-11-23 02:02:57,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:02:57,915 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 71 transitions. [2021-11-23 02:02:57,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-11-23 02:02:57,917 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 71 transitions. [2021-11-23 02:02:57,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 02:02:57,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:02:57,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:02:57,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:02:57,922 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:02:57,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:02:57,923 INFO L85 PathProgramCache]: Analyzing trace with hash -886847679, now seen corresponding path program 1 times [2021-11-23 02:02:57,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:02:57,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536152785] [2021-11-23 02:02:57,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:02:57,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:02:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:02:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:02:58,059 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:02:58,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536152785] [2021-11-23 02:02:58,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536152785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:02:58,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:02:58,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:02:58,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650944681] [2021-11-23 02:02:58,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:02:58,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:02:58,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:02:58,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:02:58,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:02:58,064 INFO L87 Difference]: Start difference. First operand 54 states and 71 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-23 02:02:58,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:02:58,181 INFO L93 Difference]: Finished difference Result 158 states and 210 transitions. [2021-11-23 02:02:58,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:02:58,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 21 [2021-11-23 02:02:58,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:02:58,186 INFO L225 Difference]: With dead ends: 158 [2021-11-23 02:02:58,189 INFO L226 Difference]: Without dead ends: 106 [2021-11-23 02:02:58,190 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:02:58,192 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 58 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:02:58,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 131 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:02:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-23 02:02:58,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2021-11-23 02:02:58,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 64 states have (on average 1.390625) internal successors, (89), 79 states have internal predecessors, (89), 24 states have call successors, (24), 14 states have call predecessors, (24), 14 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-23 02:02:58,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 137 transitions. [2021-11-23 02:02:58,242 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 137 transitions. Word has length 21 [2021-11-23 02:02:58,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:02:58,243 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 137 transitions. [2021-11-23 02:02:58,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-11-23 02:02:58,245 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 137 transitions. [2021-11-23 02:02:58,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 02:02:58,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:02:58,250 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:02:58,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:02:58,252 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:02:58,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:02:58,253 INFO L85 PathProgramCache]: Analyzing trace with hash -456313964, now seen corresponding path program 1 times [2021-11-23 02:02:58,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:02:58,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759302213] [2021-11-23 02:02:58,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:02:58,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:02:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:02:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:02:58,476 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:02:58,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759302213] [2021-11-23 02:02:58,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759302213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:02:58,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:02:58,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:02:58,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467175658] [2021-11-23 02:02:58,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:02:58,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:02:58,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:02:58,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:02:58,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:02:58,479 INFO L87 Difference]: Start difference. First operand 103 states and 137 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-11-23 02:02:58,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:02:58,682 INFO L93 Difference]: Finished difference Result 285 states and 378 transitions. [2021-11-23 02:02:58,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:02:58,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 24 [2021-11-23 02:02:58,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:02:58,694 INFO L225 Difference]: With dead ends: 285 [2021-11-23 02:02:58,695 INFO L226 Difference]: Without dead ends: 184 [2021-11-23 02:02:58,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:02:58,698 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 44 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:02:58,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 233 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:02:58,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-23 02:02:58,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 171. [2021-11-23 02:02:58,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 112 states have (on average 1.3214285714285714) internal successors, (148), 129 states have internal predecessors, (148), 34 states have call successors, (34), 24 states have call predecessors, (34), 24 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-23 02:02:58,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 216 transitions. [2021-11-23 02:02:58,767 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 216 transitions. Word has length 24 [2021-11-23 02:02:58,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:02:58,768 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 216 transitions. [2021-11-23 02:02:58,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-11-23 02:02:58,768 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 216 transitions. [2021-11-23 02:02:58,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 02:02:58,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:02:58,771 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:02:58,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:02:58,772 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:02:58,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:02:58,773 INFO L85 PathProgramCache]: Analyzing trace with hash -348606457, now seen corresponding path program 1 times [2021-11-23 02:02:58,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:02:58,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152234078] [2021-11-23 02:02:58,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:02:58,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:02:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:02:58,829 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:02:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:02:58,886 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 02:02:58,886 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:02:58,888 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:02:58,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:02:58,896 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-23 02:02:58,900 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:02:58,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:02:58 BoogieIcfgContainer [2021-11-23 02:02:58,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:02:58,955 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:02:58,955 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:02:58,955 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:02:58,956 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:02:56" (3/4) ... [2021-11-23 02:02:58,958 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 02:02:59,089 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:02:59,089 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:02:59,090 INFO L158 Benchmark]: Toolchain (without parser) took 3793.88ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 59.2MB in the beginning and 95.2MB in the end (delta: -36.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:02:59,090 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 96.5MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:02:59,091 INFO L158 Benchmark]: CACSL2BoogieTranslator took 702.94ms. Allocated memory is still 96.5MB. Free memory was 59.0MB in the beginning and 63.5MB in the end (delta: -4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:02:59,091 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.83ms. Allocated memory is still 96.5MB. Free memory was 63.5MB in the beginning and 60.9MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:02:59,092 INFO L158 Benchmark]: Boogie Preprocessor took 73.03ms. Allocated memory is still 96.5MB. Free memory was 60.9MB in the beginning and 59.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:02:59,092 INFO L158 Benchmark]: RCFGBuilder took 739.87ms. Allocated memory is still 96.5MB. Free memory was 59.3MB in the beginning and 39.4MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-23 02:02:59,093 INFO L158 Benchmark]: TraceAbstraction took 2034.18ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 38.9MB in the beginning and 99.5MB in the end (delta: -60.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:02:59,093 INFO L158 Benchmark]: Witness Printer took 134.30ms. Allocated memory is still 132.1MB. Free memory was 99.5MB in the beginning and 95.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:02:59,095 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 96.5MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 702.94ms. Allocated memory is still 96.5MB. Free memory was 59.0MB in the beginning and 63.5MB in the end (delta: -4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.83ms. Allocated memory is still 96.5MB. Free memory was 63.5MB in the beginning and 60.9MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.03ms. Allocated memory is still 96.5MB. Free memory was 60.9MB in the beginning and 59.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 739.87ms. Allocated memory is still 96.5MB. Free memory was 59.3MB in the beginning and 39.4MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2034.18ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 38.9MB in the beginning and 99.5MB in the end (delta: -60.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 134.30ms. Allocated memory is still 132.1MB. Free memory was 99.5MB in the beginning and 95.2MB 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: 551]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L187] int pumpRunning = 0; [L188] int systemActive = 1; [L448] int cleanupTimeShifts = 4; [L725] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int retValue_acc ; [L525] int tmp ; [L529] FCALL select_helpers() [L530] FCALL select_features() [L531] CALL, EXPR valid_product() [L948] int retValue_acc ; [L951] retValue_acc = 1 [L952] return (retValue_acc); [L531] RET, EXPR valid_product() [L531] tmp = valid_product() [L533] COND TRUE \read(tmp) [L535] FCALL setup() [L536] CALL runTest() [L515] CALL test() [L382] int splverifierCounter ; [L383] int tmp ; [L384] int tmp___0 ; [L385] int tmp___1 ; [L386] int tmp___2 ; [L389] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L391] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L393] COND TRUE splverifierCounter < 4 [L399] tmp = __VERIFIER_nondet_int() [L401] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L403] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L75] COND TRUE waterLevel < 2 [L76] waterLevel = waterLevel + 1 [L403] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L409] tmp___0 = __VERIFIER_nondet_int() [L411] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L419] tmp___2 = __VERIFIER_nondet_int() [L421] COND FALSE !(\read(tmp___2)) [L425] tmp___1 = __VERIFIER_nondet_int() [L427] COND TRUE \read(tmp___1) [L429] CALL stopSystem() [L368] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L375] systemActive = 0 [L429] RET stopSystem() [L436] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L194] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L201] COND FALSE !(\read(systemActive)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L209] CALL __utac_acc__Specification3_spec__1() [L149] int tmp ; [L150] int tmp___0 ; [L151] int tmp___1 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L155] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); [L155] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L155] tmp = isMethaneLevelCritical() [L157] COND FALSE !(\read(tmp)) [L161] CALL, EXPR getWaterLevel() [L128] int retValue_acc ; [L131] retValue_acc = waterLevel [L132] return (retValue_acc); [L161] RET, EXPR getWaterLevel() [L161] tmp___0 = getWaterLevel() [L163] COND TRUE tmp___0 == 2 [L165] CALL, EXPR isPumpRunning() [L301] int retValue_acc ; [L304] retValue_acc = pumpRunning [L305] return (retValue_acc); [L165] RET, EXPR isPumpRunning() [L165] tmp___1 = isPumpRunning() [L167] COND FALSE !(\read(tmp___1)) [L171] CALL __automaton_fail() [L551] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 120 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 116 mSDsluCounter, 532 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 316 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 145 IncrementalHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 265 mSDtfsCounter, 145 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred in iteration=4, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 193 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [2021-11-23 02:02:59,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_782e2b2b-006f-41ff-a7e7-f5dd9dd14d95/bin/utaipan-EQgc7hIp5V/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