./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0 --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 6e02099a7691e56a2269c7f6adf0fcb5caba1ee7f52ae5d6ac320766d29d8d07 --- 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-e04fb08 [2022-11-16 20:35:12,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:35:12,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:35:12,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:35:12,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:35:12,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:35:12,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:35:12,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:35:12,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:35:12,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:35:12,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:35:12,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:35:12,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:35:12,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:35:12,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:35:12,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:35:12,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:35:12,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:35:12,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:35:12,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:35:12,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:35:12,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:35:12,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:35:12,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:35:12,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:35:12,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:35:12,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:35:12,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:35:12,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:35:12,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:35:12,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:35:12,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:35:12,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:35:12,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:35:12,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:35:12,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:35:12,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:35:12,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:35:12,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:35:12,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:35:12,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:35:12,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 20:35:12,636 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:35:12,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:35:12,637 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:35:12,637 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:35:12,638 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:35:12,638 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:35:12,638 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:35:12,639 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:35:12,639 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:35:12,639 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:35:12,639 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:35:12,640 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:35:12,640 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:35:12,640 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:35:12,640 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:35:12,641 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:35:12,641 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:35:12,641 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:35:12,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:35:12,642 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:35:12,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:35:12,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:35:12,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:35:12,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:35:12,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:35:12,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:35:12,644 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:35:12,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:35:12,644 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:35:12,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:35:12,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:35:12,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:35:12,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:35:12,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:35:12,646 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:35:12,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:35:12,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:35:12,646 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:35:12,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:35:12,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:35:12,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:35:12,647 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_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e02099a7691e56a2269c7f6adf0fcb5caba1ee7f52ae5d6ac320766d29d8d07 [2022-11-16 20:35:13,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:35:13,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:35:13,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:35:13,052 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:35:13,053 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:35:13,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c [2022-11-16 20:35:13,139 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/data/b1dacab50/2fe8db221c174d28bea9744687e781af/FLAGcaf5eabf1 [2022-11-16 20:35:13,771 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:35:13,772 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c [2022-11-16 20:35:13,784 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/data/b1dacab50/2fe8db221c174d28bea9744687e781af/FLAGcaf5eabf1 [2022-11-16 20:35:14,066 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/data/b1dacab50/2fe8db221c174d28bea9744687e781af [2022-11-16 20:35:14,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:35:14,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:35:14,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:35:14,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:35:14,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:35:14,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:35:14" (1/1) ... [2022-11-16 20:35:14,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b6d508f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:14, skipping insertion in model container [2022-11-16 20:35:14,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:35:14" (1/1) ... [2022-11-16 20:35:14,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:35:14,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:35:14,427 WARN L229 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_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c[4842,4855] [2022-11-16 20:35:14,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:35:14,558 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:35:14,583 WARN L229 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_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c[4842,4855] [2022-11-16 20:35:14,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:35:14,640 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:35:14,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:14 WrapperNode [2022-11-16 20:35:14,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:35:14,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:35:14,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:35:14,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:35:14,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:14" (1/1) ... [2022-11-16 20:35:14,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:14" (1/1) ... [2022-11-16 20:35:14,689 INFO L138 Inliner]: procedures = 53, calls = 150, calls flagged for inlining = 20, calls inlined = 17, statements flattened = 225 [2022-11-16 20:35:14,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:35:14,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:35:14,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:35:14,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:35:14,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:14" (1/1) ... [2022-11-16 20:35:14,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:14" (1/1) ... [2022-11-16 20:35:14,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:14" (1/1) ... [2022-11-16 20:35:14,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:14" (1/1) ... [2022-11-16 20:35:14,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:14" (1/1) ... [2022-11-16 20:35:14,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:14" (1/1) ... [2022-11-16 20:35:14,714 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:14" (1/1) ... [2022-11-16 20:35:14,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:14" (1/1) ... [2022-11-16 20:35:14,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:35:14,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:35:14,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:35:14,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:35:14,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:14" (1/1) ... [2022-11-16 20:35:14,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:35:14,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:35:14,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:35:14,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:35:14,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:35:14,833 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-16 20:35:14,833 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-16 20:35:14,833 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-16 20:35:14,834 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-16 20:35:14,834 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-16 20:35:14,834 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-16 20:35:14,834 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-16 20:35:14,834 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-16 20:35:14,834 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-16 20:35:14,834 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-16 20:35:14,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 20:35:14,835 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-16 20:35:14,835 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-16 20:35:14,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:35:14,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:35:14,951 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:35:14,954 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:35:15,341 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:35:15,449 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:35:15,449 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 20:35:15,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:35:15 BoogieIcfgContainer [2022-11-16 20:35:15,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:35:15,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:35:15,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:35:15,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:35:15,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:35:14" (1/3) ... [2022-11-16 20:35:15,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c229d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:35:15, skipping insertion in model container [2022-11-16 20:35:15,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:35:14" (2/3) ... [2022-11-16 20:35:15,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c229d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:35:15, skipping insertion in model container [2022-11-16 20:35:15,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:35:15" (3/3) ... [2022-11-16 20:35:15,463 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product33.cil.c [2022-11-16 20:35:15,484 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:35:15,485 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:35:15,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:35:15,610 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;@4efa42f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:35:15,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:35:15,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 32 states have (on average 1.4375) internal successors, (46), 38 states have internal predecessors, (46), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 20:35:15,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 20:35:15,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:35:15,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:35:15,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:35:15,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:35:15,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2054225444, now seen corresponding path program 1 times [2022-11-16 20:35:15,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:35:15,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074485907] [2022-11-16 20:35:15,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:35:15,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:35:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:35:15,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:15,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:35:15,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074485907] [2022-11-16 20:35:15,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074485907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:35:15,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:35:15,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:35:15,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149156413] [2022-11-16 20:35:15,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:35:15,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 20:35:15,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:35:15,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 20:35:15,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:35:15,960 INFO L87 Difference]: Start difference. First operand has 49 states, 32 states have (on average 1.4375) internal successors, (46), 38 states have internal predecessors, (46), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) 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) [2022-11-16 20:35:16,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:35:16,080 INFO L93 Difference]: Finished difference Result 96 states and 129 transitions. [2022-11-16 20:35:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 20:35:16,085 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 [2022-11-16 20:35:16,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:35:16,098 INFO L225 Difference]: With dead ends: 96 [2022-11-16 20:35:16,099 INFO L226 Difference]: Without dead ends: 44 [2022-11-16 20:35:16,105 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 [2022-11-16 20:35:16,116 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:35:16,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:35:16,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-16 20:35:16,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-16 20:35:16,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 34 states have internal predecessors, (38), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 20:35:16,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2022-11-16 20:35:16,176 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 17 [2022-11-16 20:35:16,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:35:16,177 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2022-11-16 20:35:16,177 INFO L496 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) [2022-11-16 20:35:16,178 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2022-11-16 20:35:16,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 20:35:16,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:35:16,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:35:16,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:35:16,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:35:16,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:35:16,185 INFO L85 PathProgramCache]: Analyzing trace with hash 511754526, now seen corresponding path program 1 times [2022-11-16 20:35:16,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:35:16,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476858112] [2022-11-16 20:35:16,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:35:16,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:35:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:35:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:16,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:35:16,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476858112] [2022-11-16 20:35:16,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476858112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:35:16,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:35:16,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:35:16,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618909573] [2022-11-16 20:35:16,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:35:16,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:35:16,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:35:16,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:35:16,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:35:16,342 INFO L87 Difference]: Start difference. First operand 44 states and 55 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) [2022-11-16 20:35:16,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:35:16,415 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2022-11-16 20:35:16,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:35:16,419 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 [2022-11-16 20:35:16,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:35:16,422 INFO L225 Difference]: With dead ends: 65 [2022-11-16 20:35:16,422 INFO L226 Difference]: Without dead ends: 36 [2022-11-16 20:35:16,428 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 [2022-11-16 20:35:16,429 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:35:16,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 55 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:35:16,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-16 20:35:16,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-16 20:35:16,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 29 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 20:35:16,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2022-11-16 20:35:16,438 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 18 [2022-11-16 20:35:16,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:35:16,438 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2022-11-16 20:35:16,438 INFO L496 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) [2022-11-16 20:35:16,442 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2022-11-16 20:35:16,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 20:35:16,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:35:16,445 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] [2022-11-16 20:35:16,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:35:16,446 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:35:16,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:35:16,450 INFO L85 PathProgramCache]: Analyzing trace with hash 61706367, now seen corresponding path program 1 times [2022-11-16 20:35:16,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:35:16,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791976173] [2022-11-16 20:35:16,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:35:16,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:35:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:35:16,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:16,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:35:16,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791976173] [2022-11-16 20:35:16,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791976173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:35:16,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:35:16,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:35:16,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50437810] [2022-11-16 20:35:16,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:35:16,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:35:16,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:35:16,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:35:16,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:35:16,598 INFO L87 Difference]: Start difference. First operand 36 states and 44 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) [2022-11-16 20:35:16,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:35:16,639 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2022-11-16 20:35:16,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:35:16,640 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 [2022-11-16 20:35:16,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:35:16,641 INFO L225 Difference]: With dead ends: 70 [2022-11-16 20:35:16,641 INFO L226 Difference]: Without dead ends: 36 [2022-11-16 20:35:16,642 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 [2022-11-16 20:35:16,643 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:35:16,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 30 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:35:16,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-16 20:35:16,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-16 20:35:16,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 29 states have internal predecessors, (31), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 20:35:16,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2022-11-16 20:35:16,652 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 20 [2022-11-16 20:35:16,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:35:16,652 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2022-11-16 20:35:16,652 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) [2022-11-16 20:35:16,653 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2022-11-16 20:35:16,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 20:35:16,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:35:16,654 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] [2022-11-16 20:35:16,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 20:35:16,654 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:35:16,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:35:16,655 INFO L85 PathProgramCache]: Analyzing trace with hash 336966834, now seen corresponding path program 1 times [2022-11-16 20:35:16,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:35:16,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006294746] [2022-11-16 20:35:16,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:35:16,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:35:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:35:17,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:17,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:35:17,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006294746] [2022-11-16 20:35:17,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006294746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:35:17,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:35:17,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 20:35:17,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631427644] [2022-11-16 20:35:17,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:35:17,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 20:35:17,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:35:17,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 20:35:17,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 20:35:17,087 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2022-11-16 20:35:17,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:35:17,201 INFO L93 Difference]: Finished difference Result 113 states and 138 transitions. [2022-11-16 20:35:17,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:35:17,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 23 [2022-11-16 20:35:17,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:35:17,203 INFO L225 Difference]: With dead ends: 113 [2022-11-16 20:35:17,203 INFO L226 Difference]: Without dead ends: 79 [2022-11-16 20:35:17,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 20:35:17,205 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 54 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:35:17,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 204 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:35:17,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-16 20:35:17,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 64. [2022-11-16 20:35:17,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 50 states have internal predecessors, (56), 10 states have call successors, (10), 9 states have call predecessors, (10), 9 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 20:35:17,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2022-11-16 20:35:17,233 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 23 [2022-11-16 20:35:17,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:35:17,233 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2022-11-16 20:35:17,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2022-11-16 20:35:17,234 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2022-11-16 20:35:17,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 20:35:17,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:35:17,235 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] [2022-11-16 20:35:17,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 20:35:17,235 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:35:17,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:35:17,236 INFO L85 PathProgramCache]: Analyzing trace with hash 742855148, now seen corresponding path program 1 times [2022-11-16 20:35:17,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:35:17,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681935697] [2022-11-16 20:35:17,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:35:17,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:35:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:35:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:17,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:35:17,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681935697] [2022-11-16 20:35:17,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681935697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:35:17,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:35:17,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 20:35:17,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542591746] [2022-11-16 20:35:17,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:35:17,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 20:35:17,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:35:17,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 20:35:17,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 20:35:17,406 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 20:35:17,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:35:17,530 INFO L93 Difference]: Finished difference Result 184 states and 221 transitions. [2022-11-16 20:35:17,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 20:35:17,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-11-16 20:35:17,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:35:17,533 INFO L225 Difference]: With dead ends: 184 [2022-11-16 20:35:17,533 INFO L226 Difference]: Without dead ends: 122 [2022-11-16 20:35:17,534 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 [2022-11-16 20:35:17,535 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 20 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:35:17,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 155 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:35:17,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-16 20:35:17,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 114. [2022-11-16 20:35:17,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 88 states have internal predecessors, (97), 18 states have call successors, (18), 16 states have call predecessors, (18), 16 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 20:35:17,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2022-11-16 20:35:17,589 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 26 [2022-11-16 20:35:17,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:35:17,589 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2022-11-16 20:35:17,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 20:35:17,590 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2022-11-16 20:35:17,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 20:35:17,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:35:17,592 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] [2022-11-16 20:35:17,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 20:35:17,592 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:35:17,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:35:17,593 INFO L85 PathProgramCache]: Analyzing trace with hash -695003585, now seen corresponding path program 1 times [2022-11-16 20:35:17,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:35:17,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226959828] [2022-11-16 20:35:17,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:35:17,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:35:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:35:17,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:17,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:35:17,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226959828] [2022-11-16 20:35:17,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226959828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:35:17,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:35:17,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:35:17,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913563935] [2022-11-16 20:35:17,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:35:17,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:35:17,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:35:17,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:35:17,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:35:17,674 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 20:35:17,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:35:17,737 INFO L93 Difference]: Finished difference Result 176 states and 211 transitions. [2022-11-16 20:35:17,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:35:17,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2022-11-16 20:35:17,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:35:17,741 INFO L225 Difference]: With dead ends: 176 [2022-11-16 20:35:17,741 INFO L226 Difference]: Without dead ends: 174 [2022-11-16 20:35:17,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:35:17,743 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:35:17,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 64 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:35:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-16 20:35:17,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-11-16 20:35:17,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 120 states have (on average 1.2333333333333334) internal successors, (148), 134 states have internal predecessors, (148), 28 states have call successors, (28), 25 states have call predecessors, (28), 25 states have return successors, (32), 25 states have call predecessors, (32), 28 states have call successors, (32) [2022-11-16 20:35:17,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 208 transitions. [2022-11-16 20:35:17,774 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 208 transitions. Word has length 29 [2022-11-16 20:35:17,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:35:17,774 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 208 transitions. [2022-11-16 20:35:17,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 20:35:17,775 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 208 transitions. [2022-11-16 20:35:17,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 20:35:17,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:35:17,778 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:35:17,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 20:35:17,778 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:35:17,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:35:17,779 INFO L85 PathProgramCache]: Analyzing trace with hash -951154193, now seen corresponding path program 1 times [2022-11-16 20:35:17,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:35:17,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411727687] [2022-11-16 20:35:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:35:17,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:35:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:35:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 20:35:17,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:35:17,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411727687] [2022-11-16 20:35:17,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411727687] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:35:17,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199262506] [2022-11-16 20:35:17,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:35:17,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:35:17,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:35:17,918 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:35:17,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 20:35:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:35:18,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 20:35:18,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:35:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:35:18,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:35:18,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199262506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:35:18,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 20:35:18,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-16 20:35:18,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638736272] [2022-11-16 20:35:18,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:35:18,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:35:18,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:35:18,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:35:18,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 20:35:18,194 INFO L87 Difference]: Start difference. First operand 174 states and 208 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 20:35:18,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:35:18,284 INFO L93 Difference]: Finished difference Result 354 states and 434 transitions. [2022-11-16 20:35:18,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:35:18,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 51 [2022-11-16 20:35:18,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:35:18,287 INFO L225 Difference]: With dead ends: 354 [2022-11-16 20:35:18,287 INFO L226 Difference]: Without dead ends: 261 [2022-11-16 20:35:18,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 20:35:18,290 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 16 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:35:18,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 78 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:35:18,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-11-16 20:35:18,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 259. [2022-11-16 20:35:18,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 177 states have (on average 1.2203389830508475) internal successors, (216), 196 states have internal predecessors, (216), 42 states have call successors, (42), 39 states have call predecessors, (42), 39 states have return successors, (53), 39 states have call predecessors, (53), 42 states have call successors, (53) [2022-11-16 20:35:18,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 311 transitions. [2022-11-16 20:35:18,357 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 311 transitions. Word has length 51 [2022-11-16 20:35:18,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:35:18,359 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 311 transitions. [2022-11-16 20:35:18,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 20:35:18,360 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 311 transitions. [2022-11-16 20:35:18,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-16 20:35:18,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:35:18,367 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:35:18,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 20:35:18,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:35:18,578 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:35:18,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:35:18,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2100328461, now seen corresponding path program 1 times [2022-11-16 20:35:18,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:35:18,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299384907] [2022-11-16 20:35:18,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:35:18,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:35:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:35:18,674 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 20:35:18,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:35:18,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299384907] [2022-11-16 20:35:18,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299384907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:35:18,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:35:18,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 20:35:18,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506366266] [2022-11-16 20:35:18,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:35:18,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 20:35:18,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:35:18,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 20:35:18,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:35:18,677 INFO L87 Difference]: Start difference. First operand 259 states and 311 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 20:35:18,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:35:18,831 INFO L93 Difference]: Finished difference Result 469 states and 562 transitions. [2022-11-16 20:35:18,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 20:35:18,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 53 [2022-11-16 20:35:18,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:35:18,834 INFO L225 Difference]: With dead ends: 469 [2022-11-16 20:35:18,834 INFO L226 Difference]: Without dead ends: 291 [2022-11-16 20:35:18,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 20:35:18,840 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 62 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:35:18,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 118 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:35:18,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-16 20:35:18,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2022-11-16 20:35:18,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 199 states have (on average 1.2060301507537687) internal successors, (240), 215 states have internal predecessors, (240), 42 states have call successors, (42), 42 states have call predecessors, (42), 45 states have return successors, (53), 42 states have call predecessors, (53), 42 states have call successors, (53) [2022-11-16 20:35:18,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 335 transitions. [2022-11-16 20:35:18,897 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 335 transitions. Word has length 53 [2022-11-16 20:35:18,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:35:18,898 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 335 transitions. [2022-11-16 20:35:18,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 20:35:18,898 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 335 transitions. [2022-11-16 20:35:18,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-16 20:35:18,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:35:18,900 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:35:18,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 20:35:18,900 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:35:18,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:35:18,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1292650765, now seen corresponding path program 2 times [2022-11-16 20:35:18,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:35:18,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958532253] [2022-11-16 20:35:18,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:35:18,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:35:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:35:18,927 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 20:35:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:35:18,976 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 20:35:18,976 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 20:35:18,978 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 20:35:18,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 20:35:18,984 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:35:18,988 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 20:35:19,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 08:35:19 BoogieIcfgContainer [2022-11-16 20:35:19,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 20:35:19,043 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 20:35:19,043 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 20:35:19,043 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 20:35:19,044 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:35:15" (3/4) ... [2022-11-16 20:35:19,045 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 20:35:19,160 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 20:35:19,161 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 20:35:19,161 INFO L158 Benchmark]: Toolchain (without parser) took 5090.91ms. Allocated memory was 104.9MB in the beginning and 216.0MB in the end (delta: 111.1MB). Free memory was 63.8MB in the beginning and 190.2MB in the end (delta: -126.3MB). Peak memory consumption was 74.0MB. Max. memory is 16.1GB. [2022-11-16 20:35:19,162 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory is still 81.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:35:19,162 INFO L158 Benchmark]: CACSL2BoogieTranslator took 564.30ms. Allocated memory is still 104.9MB. Free memory was 63.6MB in the beginning and 72.5MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 20:35:19,162 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.06ms. Allocated memory is still 104.9MB. Free memory was 72.5MB in the beginning and 70.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 20:35:19,163 INFO L158 Benchmark]: Boogie Preprocessor took 28.06ms. Allocated memory is still 104.9MB. Free memory was 70.0MB in the beginning and 68.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 20:35:19,163 INFO L158 Benchmark]: RCFGBuilder took 733.80ms. Allocated memory is still 104.9MB. Free memory was 68.3MB in the beginning and 41.0MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-16 20:35:19,164 INFO L158 Benchmark]: TraceAbstraction took 3587.87ms. Allocated memory was 104.9MB in the beginning and 159.4MB in the end (delta: 54.5MB). Free memory was 40.4MB in the beginning and 51.3MB in the end (delta: -10.9MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. [2022-11-16 20:35:19,165 INFO L158 Benchmark]: Witness Printer took 117.97ms. Allocated memory was 159.4MB in the beginning and 216.0MB in the end (delta: 56.6MB). Free memory was 50.2MB in the beginning and 190.2MB in the end (delta: -139.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 20:35:19,166 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory is still 81.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 564.30ms. Allocated memory is still 104.9MB. Free memory was 63.6MB in the beginning and 72.5MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.06ms. Allocated memory is still 104.9MB. Free memory was 72.5MB in the beginning and 70.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.06ms. Allocated memory is still 104.9MB. Free memory was 70.0MB in the beginning and 68.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 733.80ms. Allocated memory is still 104.9MB. Free memory was 68.3MB in the beginning and 41.0MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 3587.87ms. Allocated memory was 104.9MB in the beginning and 159.4MB in the end (delta: 54.5MB). Free memory was 40.4MB in the beginning and 51.3MB in the end (delta: -10.9MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. * Witness Printer took 117.97ms. Allocated memory was 159.4MB in the beginning and 216.0MB in the end (delta: 56.6MB). Free memory was 50.2MB in the beginning and 190.2MB in the end (delta: -139.9MB). Peak memory consumption was 6.3MB. 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: 294]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L689] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L886] int methAndRunningLastTime ; [L96] int methaneLevelCritical = 0; [L302] int pumpRunning = 0; [L95] int waterLevel = 1; [L303] int systemActive = 1; [L189] int cleanupTimeShifts = 4; [L267] int retValue_acc ; [L268] int tmp ; [L272] FCALL select_helpers() [L273] FCALL select_features() [L274] CALL, EXPR valid_product() [L79] int retValue_acc ; [L82] retValue_acc = 1 [L83] return (retValue_acc); [L274] RET, EXPR valid_product() [L274] tmp = valid_product() [L276] COND TRUE \read(tmp) [L278] FCALL setup() [L279] CALL runTest() [L260] CALL __utac_acc__Specification2_spec__1() [L891] methAndRunningLastTime = 0 [L260] RET __utac_acc__Specification2_spec__1() [L261] CALL test() [L456] int splverifierCounter ; [L457] int tmp ; [L458] int tmp___0 ; [L459] int tmp___1 ; [L460] int tmp___2 ; [L463] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L465] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L467] COND TRUE splverifierCounter < 4 [L473] tmp = __VERIFIER_nondet_int() [L475] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L477] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L113] COND TRUE waterLevel < 2 [L114] waterLevel = waterLevel + 1 [L477] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L483] tmp___0 = __VERIFIER_nondet_int() [L485] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L487] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L125] COND FALSE !(\read(methaneLevelCritical)) [L128] methaneLevelCritical = 1 [L487] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L493] tmp___2 = __VERIFIER_nondet_int() [L495] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___1=29, tmp___2=-1, waterLevel=2] [L508] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L310] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L317] COND TRUE \read(systemActive) [L319] CALL processEnvironment() [L339] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L342] COND TRUE ! pumpRunning [L344] CALL, EXPR isHighWaterLevel() [L436] int retValue_acc ; [L437] int tmp ; [L438] int tmp___0 ; [L442] CALL, EXPR isHighWaterSensorDry() [L175] int retValue_acc ; [L178] COND FALSE !(waterLevel < 2) [L182] retValue_acc = 0 [L183] return (retValue_acc); [L442] RET, EXPR isHighWaterSensorDry() [L442] tmp = isHighWaterSensorDry() [L444] COND FALSE !(\read(tmp)) [L447] tmp___0 = 1 [L449] retValue_acc = tmp___0 [L450] return (retValue_acc); [L344] RET, EXPR isHighWaterLevel() [L344] tmp = isHighWaterLevel() [L346] COND TRUE \read(tmp) [L348] CALL activatePump() [L367] pumpRunning = 1 [L348] RET activatePump() [L319] RET processEnvironment() [L325] CALL __utac_acc__Specification2_spec__2() [L896] int tmp ; [L897] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L901] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L134] int retValue_acc ; [L137] retValue_acc = methaneLevelCritical [L138] return (retValue_acc); [L901] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L901] tmp = isMethaneLevelCritical() [L903] COND TRUE \read(tmp) [L905] CALL, EXPR isPumpRunning() [L391] int retValue_acc ; [L394] retValue_acc = pumpRunning [L395] return (retValue_acc); [L905] RET, EXPR isPumpRunning() [L905] tmp___0 = isPumpRunning() [L907] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L908] COND FALSE !(\read(methAndRunningLastTime)) [L913] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L325] RET __utac_acc__Specification2_spec__2() [L508] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___1=29, tmp___2=-1, waterLevel=2] [L465] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___1=29, tmp___2=-1, waterLevel=2] [L467] COND TRUE splverifierCounter < 4 [L473] tmp = __VERIFIER_nondet_int() [L475] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=29, tmp___2=-1, waterLevel=2] [L483] tmp___0 = __VERIFIER_nondet_int() [L485] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=29, tmp___2=-1, waterLevel=2] [L493] tmp___2 = __VERIFIER_nondet_int() [L495] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=29, tmp___2=-2, waterLevel=2] [L508] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L310] COND TRUE \read(pumpRunning) [L312] CALL lowerWaterLevel() [L101] COND TRUE waterLevel > 0 [L102] waterLevel = waterLevel - 1 [L312] RET lowerWaterLevel() [L317] COND TRUE \read(systemActive) [L319] CALL processEnvironment() [L339] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L342] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L357] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L319] RET processEnvironment() [L325] CALL __utac_acc__Specification2_spec__2() [L896] int tmp ; [L897] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L901] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L134] int retValue_acc ; [L137] retValue_acc = methaneLevelCritical [L138] return (retValue_acc); [L901] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L901] tmp = isMethaneLevelCritical() [L903] COND TRUE \read(tmp) [L905] CALL, EXPR isPumpRunning() [L391] int retValue_acc ; [L394] retValue_acc = pumpRunning [L395] return (retValue_acc); [L905] RET, EXPR isPumpRunning() [L905] tmp___0 = isPumpRunning() [L907] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L908] COND TRUE \read(methAndRunningLastTime) [L910] CALL __automaton_fail() [L294] reach_error() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 217 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 210 mSDsluCounter, 750 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 433 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 352 IncrementalHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 317 mSDtfsCounter, 352 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=287occurred in iteration=8, InterpolantAutomatonStates: 33, 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, 8 MinimizatonAttempts, 29 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 341 NumberOfCodeBlocks, 341 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 279 ConstructedInterpolants, 0 QuantifiedInterpolants, 689 SizeOfPredicates, 1 NumberOfNonLiveVariables, 416 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 51/59 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! [2022-11-16 20:35:19,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a40e93b9-2268-4a40-ba99-ae7c4698f5d1/bin/utaipan-Xvt2sAort0/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