./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW --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 894b9126919d6af09c0902d1c20b8183acfd3589fe20590a119ca487cf6e7a3f --- 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-4e7fbc6 [2022-11-23 15:05:53,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:05:53,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:05:53,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:05:53,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:05:53,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:05:53,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:05:53,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:05:53,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:05:53,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:05:53,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:05:53,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:05:53,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:05:53,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:05:53,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:05:53,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:05:53,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:05:53,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:05:53,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:05:53,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:05:53,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:05:53,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:05:53,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:05:53,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:05:53,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:05:53,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:05:53,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:05:53,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:05:53,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:05:53,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:05:53,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:05:53,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:05:53,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:05:53,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:05:53,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:05:53,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:05:53,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:05:53,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:05:53,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:05:53,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:05:53,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:05:53,167 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:05:53,208 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:05:53,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:05:53,209 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:05:53,209 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:05:53,210 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:05:53,211 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:05:53,211 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:05:53,212 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:05:53,212 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:05:53,212 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:05:53,213 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:05:53,214 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:05:53,214 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:05:53,214 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:05:53,215 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:05:53,215 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:05:53,215 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:05:53,216 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:05:53,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:05:53,217 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:05:53,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:05:53,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:05:53,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:05:53,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:05:53,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:05:53,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:05:53,219 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:05:53,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:05:53,220 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:05:53,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:05:53,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:05:53,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:05:53,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:05:53,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:05:53,222 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:05:53,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:05:53,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:05:53,223 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:05:53,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:05:53,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:05:53,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:05:53,224 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_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 894b9126919d6af09c0902d1c20b8183acfd3589fe20590a119ca487cf6e7a3f [2022-11-23 15:05:53,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:05:53,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:05:53,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:05:53,541 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:05:53,541 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:05:53,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c [2022-11-23 15:05:56,675 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:05:57,019 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:05:57,020 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c [2022-11-23 15:05:57,031 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/data/cbd51a615/d3146e99ea194e22b7af87d3750a43bb/FLAGbd789dd42 [2022-11-23 15:05:57,049 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/data/cbd51a615/d3146e99ea194e22b7af87d3750a43bb [2022-11-23 15:05:57,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:05:57,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:05:57,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:05:57,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:05:57,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:05:57,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:05:57" (1/1) ... [2022-11-23 15:05:57,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40b11c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:57, skipping insertion in model container [2022-11-23 15:05:57,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:05:57" (1/1) ... [2022-11-23 15:05:57,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:05:57,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:05:57,302 WARN L237 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_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c[1605,1618] [2022-11-23 15:05:57,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:05:57,430 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:05:57,444 WARN L237 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_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c[1605,1618] [2022-11-23 15:05:57,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:05:57,546 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:05:57,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:57 WrapperNode [2022-11-23 15:05:57,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:05:57,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:05:57,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:05:57,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:05:57,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:57" (1/1) ... [2022-11-23 15:05:57,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:57" (1/1) ... [2022-11-23 15:05:57,596 INFO L138 Inliner]: procedures = 58, calls = 105, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 236 [2022-11-23 15:05:57,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:05:57,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:05:57,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:05:57,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:05:57,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:57" (1/1) ... [2022-11-23 15:05:57,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:57" (1/1) ... [2022-11-23 15:05:57,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:57" (1/1) ... [2022-11-23 15:05:57,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:57" (1/1) ... [2022-11-23 15:05:57,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:57" (1/1) ... [2022-11-23 15:05:57,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:57" (1/1) ... [2022-11-23 15:05:57,632 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:57" (1/1) ... [2022-11-23 15:05:57,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:57" (1/1) ... [2022-11-23 15:05:57,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:05:57,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:05:57,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:05:57,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:05:57,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:57" (1/1) ... [2022-11-23 15:05:57,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:05:57,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:05:57,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:05:57,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:05:57,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:05:57,731 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-23 15:05:57,731 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-23 15:05:57,731 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-23 15:05:57,731 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-23 15:05:57,731 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-23 15:05:57,731 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-23 15:05:57,731 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-23 15:05:57,732 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-23 15:05:57,732 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-23 15:05:57,732 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-23 15:05:57,732 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-11-23 15:05:57,732 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-11-23 15:05:57,732 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-11-23 15:05:57,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-11-23 15:05:57,732 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-23 15:05:57,733 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-23 15:05:57,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:05:57,733 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-23 15:05:57,733 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-23 15:05:57,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:05:57,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:05:57,808 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:05:57,810 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:05:58,325 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:05:58,473 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:05:58,473 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:05:58,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:05:58 BoogieIcfgContainer [2022-11-23 15:05:58,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:05:58,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:05:58,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:05:58,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:05:58,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:05:57" (1/3) ... [2022-11-23 15:05:58,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a52c647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:05:58, skipping insertion in model container [2022-11-23 15:05:58,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:57" (2/3) ... [2022-11-23 15:05:58,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a52c647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:05:58, skipping insertion in model container [2022-11-23 15:05:58,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:05:58" (3/3) ... [2022-11-23 15:05:58,487 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2022-11-23 15:05:58,509 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:05:58,510 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:05:58,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:05:58,585 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;@1074654c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:05:58,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:05:58,590 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 51 states have internal predecessors, (58), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-23 15:05:58,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 15:05:58,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:58,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:05:58,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:58,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:58,607 INFO L85 PathProgramCache]: Analyzing trace with hash 712513712, now seen corresponding path program 1 times [2022-11-23 15:05:58,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:58,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014481044] [2022-11-23 15:05:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:58,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:05:58,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:58,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014481044] [2022-11-23 15:05:58,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014481044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:05:58,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:05:58,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:05:58,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308744254] [2022-11-23 15:05:58,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:05:58,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:05:58,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:05:58,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:05:58,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:05:58,853 INFO L87 Difference]: Start difference. First operand has 68 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 51 states have internal predecessors, (58), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:05:59,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:05:59,037 INFO L93 Difference]: Finished difference Result 134 states and 181 transitions. [2022-11-23 15:05:59,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:05:59,045 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-23 15:05:59,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:05:59,055 INFO L225 Difference]: With dead ends: 134 [2022-11-23 15:05:59,056 INFO L226 Difference]: Without dead ends: 63 [2022-11-23 15:05:59,060 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 [2022-11-23 15:05:59,064 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:05:59,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:05:59,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-23 15:05:59,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-23 15:05:59,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 47 states have internal predecessors, (50), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 15:05:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2022-11-23 15:05:59,116 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 12 [2022-11-23 15:05:59,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:05:59,116 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2022-11-23 15:05:59,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:05:59,117 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2022-11-23 15:05:59,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 15:05:59,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:59,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:05:59,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:05:59,119 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:59,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:59,120 INFO L85 PathProgramCache]: Analyzing trace with hash 987824052, now seen corresponding path program 1 times [2022-11-23 15:05:59,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:59,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787549277] [2022-11-23 15:05:59,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:59,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:05:59,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:59,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787549277] [2022-11-23 15:05:59,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787549277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:05:59,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:05:59,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:05:59,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483760944] [2022-11-23 15:05:59,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:05:59,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:05:59,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:05:59,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:05:59,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:05:59,274 INFO L87 Difference]: Start difference. First operand 63 states and 81 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:05:59,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:05:59,370 INFO L93 Difference]: Finished difference Result 103 states and 133 transitions. [2022-11-23 15:05:59,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:05:59,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-23 15:05:59,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:05:59,374 INFO L225 Difference]: With dead ends: 103 [2022-11-23 15:05:59,376 INFO L226 Difference]: Without dead ends: 55 [2022-11-23 15:05:59,378 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 [2022-11-23 15:05:59,380 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:05:59,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 101 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:05:59,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-23 15:05:59,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-23 15:05:59,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 42 states have internal predecessors, (44), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-23 15:05:59,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2022-11-23 15:05:59,396 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 13 [2022-11-23 15:05:59,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:05:59,396 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2022-11-23 15:05:59,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:05:59,397 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2022-11-23 15:05:59,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 15:05:59,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:59,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:05:59,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:05:59,399 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:59,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:59,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1857867065, now seen corresponding path program 1 times [2022-11-23 15:05:59,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:59,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682564075] [2022-11-23 15:05:59,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:59,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:59,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:05:59,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:59,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682564075] [2022-11-23 15:05:59,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682564075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:05:59,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:05:59,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:05:59,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692897919] [2022-11-23 15:05:59,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:05:59,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:05:59,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:05:59,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:05:59,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:05:59,833 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:06:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:00,034 INFO L93 Difference]: Finished difference Result 108 states and 139 transitions. [2022-11-23 15:06:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:06:00,035 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-23 15:06:00,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:00,037 INFO L225 Difference]: With dead ends: 108 [2022-11-23 15:06:00,040 INFO L226 Difference]: Without dead ends: 55 [2022-11-23 15:06:00,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:06:00,042 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 65 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:00,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 71 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:06:00,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-23 15:06:00,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-23 15:06:00,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 33 states have (on average 1.303030303030303) internal successors, (43), 42 states have internal predecessors, (43), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-23 15:06:00,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2022-11-23 15:06:00,065 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 69 transitions. Word has length 15 [2022-11-23 15:06:00,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:00,065 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 69 transitions. [2022-11-23 15:06:00,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:06:00,066 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 69 transitions. [2022-11-23 15:06:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-23 15:06:00,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:00,068 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] [2022-11-23 15:06:00,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:06:00,072 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:00,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:00,072 INFO L85 PathProgramCache]: Analyzing trace with hash -561703335, now seen corresponding path program 1 times [2022-11-23 15:06:00,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:00,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828613088] [2022-11-23 15:06:00,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:00,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:06:00,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:00,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828613088] [2022-11-23 15:06:00,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828613088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:06:00,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:06:00,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:06:00,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468255698] [2022-11-23 15:06:00,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:06:00,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:06:00,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:00,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:06:00,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:06:00,172 INFO L87 Difference]: Start difference. First operand 55 states and 69 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 15:06:00,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:00,290 INFO L93 Difference]: Finished difference Result 144 states and 185 transitions. [2022-11-23 15:06:00,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:06:00,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-11-23 15:06:00,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:00,298 INFO L225 Difference]: With dead ends: 144 [2022-11-23 15:06:00,298 INFO L226 Difference]: Without dead ends: 91 [2022-11-23 15:06:00,299 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 [2022-11-23 15:06:00,300 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 41 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:00,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 97 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:06:00,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-23 15:06:00,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2022-11-23 15:06:00,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 65 states have internal predecessors, (71), 16 states have call successors, (16), 15 states have call predecessors, (16), 15 states have return successors, (22), 14 states have call predecessors, (22), 16 states have call successors, (22) [2022-11-23 15:06:00,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2022-11-23 15:06:00,342 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 25 [2022-11-23 15:06:00,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:00,342 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2022-11-23 15:06:00,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 15:06:00,342 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2022-11-23 15:06:00,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-23 15:06:00,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:00,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:06:00,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:06:00,354 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:00,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:00,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1584101162, now seen corresponding path program 1 times [2022-11-23 15:06:00,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:00,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541886056] [2022-11-23 15:06:00,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:00,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:06:00,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:00,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541886056] [2022-11-23 15:06:00,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541886056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:06:00,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:06:00,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:06:00,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610113913] [2022-11-23 15:06:00,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:06:00,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:06:00,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:00,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:06:00,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:06:00,666 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 15:06:00,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:00,863 INFO L93 Difference]: Finished difference Result 250 states and 310 transitions. [2022-11-23 15:06:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:06:00,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-11-23 15:06:00,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:00,870 INFO L225 Difference]: With dead ends: 250 [2022-11-23 15:06:00,870 INFO L226 Difference]: Without dead ends: 163 [2022-11-23 15:06:00,872 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 [2022-11-23 15:06:00,878 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 80 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:00,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 186 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:06:00,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-23 15:06:00,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 134. [2022-11-23 15:06:00,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 97 states have internal predecessors, (104), 22 states have call successors, (22), 21 states have call predecessors, (22), 24 states have return successors, (31), 22 states have call predecessors, (31), 22 states have call successors, (31) [2022-11-23 15:06:00,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 157 transitions. [2022-11-23 15:06:00,933 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 157 transitions. Word has length 31 [2022-11-23 15:06:00,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:00,934 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 157 transitions. [2022-11-23 15:06:00,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 15:06:00,935 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 157 transitions. [2022-11-23 15:06:00,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 15:06:00,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:00,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:06:00,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:06:00,936 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:00,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:00,937 INFO L85 PathProgramCache]: Analyzing trace with hash -657528160, now seen corresponding path program 1 times [2022-11-23 15:06:00,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:00,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463077234] [2022-11-23 15:06:00,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:00,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:01,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:06:01,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:01,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463077234] [2022-11-23 15:06:01,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463077234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:06:01,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:06:01,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 15:06:01,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66948274] [2022-11-23 15:06:01,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:06:01,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:06:01,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:01,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:06:01,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:06:01,309 INFO L87 Difference]: Start difference. First operand 134 states and 157 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 15:06:02,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:02,099 INFO L93 Difference]: Finished difference Result 330 states and 409 transitions. [2022-11-23 15:06:02,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 15:06:02,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2022-11-23 15:06:02,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:02,108 INFO L225 Difference]: With dead ends: 330 [2022-11-23 15:06:02,108 INFO L226 Difference]: Without dead ends: 243 [2022-11-23 15:06:02,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-11-23 15:06:02,116 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 155 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:02,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 295 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 15:06:02,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-23 15:06:02,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 216. [2022-11-23 15:06:02,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 141 states have (on average 1.198581560283688) internal successors, (169), 158 states have internal predecessors, (169), 36 states have call successors, (36), 31 states have call predecessors, (36), 38 states have return successors, (51), 37 states have call predecessors, (51), 36 states have call successors, (51) [2022-11-23 15:06:02,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 256 transitions. [2022-11-23 15:06:02,200 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 256 transitions. Word has length 34 [2022-11-23 15:06:02,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:02,201 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 256 transitions. [2022-11-23 15:06:02,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 15:06:02,203 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 256 transitions. [2022-11-23 15:06:02,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-23 15:06:02,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:02,208 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:06:02,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:06:02,209 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:02,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:02,209 INFO L85 PathProgramCache]: Analyzing trace with hash 522110395, now seen corresponding path program 1 times [2022-11-23 15:06:02,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:02,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426505740] [2022-11-23 15:06:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:02,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:02,366 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 15:06:02,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:02,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426505740] [2022-11-23 15:06:02,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426505740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:06:02,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:06:02,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:06:02,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053097629] [2022-11-23 15:06:02,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:06:02,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:06:02,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:02,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:06:02,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:06:02,370 INFO L87 Difference]: Start difference. First operand 216 states and 256 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-23 15:06:02,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:02,645 INFO L93 Difference]: Finished difference Result 569 states and 690 transitions. [2022-11-23 15:06:02,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:06:02,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 55 [2022-11-23 15:06:02,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:02,654 INFO L225 Difference]: With dead ends: 569 [2022-11-23 15:06:02,654 INFO L226 Difference]: Without dead ends: 475 [2022-11-23 15:06:02,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:06:02,657 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 69 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:02,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 306 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:06:02,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-23 15:06:02,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 435. [2022-11-23 15:06:02,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 294 states have (on average 1.2108843537414966) internal successors, (356), 320 states have internal predecessors, (356), 65 states have call successors, (65), 57 states have call predecessors, (65), 75 states have return successors, (99), 73 states have call predecessors, (99), 65 states have call successors, (99) [2022-11-23 15:06:02,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 520 transitions. [2022-11-23 15:06:02,754 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 520 transitions. Word has length 55 [2022-11-23 15:06:02,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:02,756 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 520 transitions. [2022-11-23 15:06:02,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-23 15:06:02,756 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 520 transitions. [2022-11-23 15:06:02,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-23 15:06:02,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:02,762 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:06:02,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:06:02,762 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:02,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:02,763 INFO L85 PathProgramCache]: Analyzing trace with hash 493154562, now seen corresponding path program 1 times [2022-11-23 15:06:02,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:02,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081735996] [2022-11-23 15:06:02,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:02,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:03,193 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:06:03,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:03,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081735996] [2022-11-23 15:06:03,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081735996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:06:03,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:06:03,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 15:06:03,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114793574] [2022-11-23 15:06:03,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:06:03,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 15:06:03,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:03,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 15:06:03,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:06:03,198 INFO L87 Difference]: Start difference. First operand 435 states and 520 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-23 15:06:03,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:03,938 INFO L93 Difference]: Finished difference Result 793 states and 984 transitions. [2022-11-23 15:06:03,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 15:06:03,939 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 58 [2022-11-23 15:06:03,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:03,943 INFO L225 Difference]: With dead ends: 793 [2022-11-23 15:06:03,943 INFO L226 Difference]: Without dead ends: 578 [2022-11-23 15:06:03,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-11-23 15:06:03,946 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 133 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:03,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 211 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:06:03,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-11-23 15:06:04,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 523. [2022-11-23 15:06:04,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 356 states have (on average 1.2387640449438202) internal successors, (441), 388 states have internal predecessors, (441), 77 states have call successors, (77), 63 states have call predecessors, (77), 89 states have return successors, (133), 88 states have call predecessors, (133), 77 states have call successors, (133) [2022-11-23 15:06:04,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 651 transitions. [2022-11-23 15:06:04,049 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 651 transitions. Word has length 58 [2022-11-23 15:06:04,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:04,050 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 651 transitions. [2022-11-23 15:06:04,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-23 15:06:04,050 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 651 transitions. [2022-11-23 15:06:04,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-23 15:06:04,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:04,052 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:06:04,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:06:04,052 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:04,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:04,053 INFO L85 PathProgramCache]: Analyzing trace with hash 600507340, now seen corresponding path program 1 times [2022-11-23 15:06:04,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:04,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809167984] [2022-11-23 15:06:04,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:04,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:04,746 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:06:04,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:04,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809167984] [2022-11-23 15:06:04,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809167984] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:06:04,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647543019] [2022-11-23 15:06:04,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:04,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:06:04,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:06:04,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:06:04,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:06:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:04,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-23 15:06:04,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:06:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 15:06:05,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:06:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 15:06:06,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647543019] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:06:06,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [349877612] [2022-11-23 15:06:06,042 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2022-11-23 15:06:06,042 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:06:06,047 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:06:06,053 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:06:06,053 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:06:12,402 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 139 for LOIs [2022-11-23 15:06:12,430 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 52 for LOIs [2022-11-23 15:06:12,834 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 49 for LOIs [2022-11-23 15:06:12,988 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 49 for LOIs [2022-11-23 15:06:13,302 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 40 for LOIs [2022-11-23 15:06:13,309 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 43 for LOIs [2022-11-23 15:06:13,318 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 26 for LOIs [2022-11-23 15:06:13,321 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:06:21,139 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6828#(and (= |timeShift_getWaterLevel_~retValue_acc~11#1| ~waterLevel~0) (<= ~methaneLevelCritical~0 1) (<= 0 |old(~pumpRunning~0)|) (<= ~pumpRunning~0 1) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 0)) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| |timeShift_getWaterLevel_#res#1|) (<= |old(~pumpRunning~0)| 1) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= 1 ~systemActive~0) (<= |#NULL.offset| 0) (= |timeShift_getWaterLevel_~retValue_acc~11#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| 0) (<= 0 ~head~0.base) (<= 0 ~methaneLevelCritical~0) (<= 0 ~pumpRunning~0) (<= ~head~0.base 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-23 15:06:21,139 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:06:21,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:06:21,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 27 [2022-11-23 15:06:21,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073627955] [2022-11-23 15:06:21,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:06:21,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-23 15:06:21,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:21,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-23 15:06:21,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=3372, Unknown=0, NotChecked=0, Total=3782 [2022-11-23 15:06:21,143 INFO L87 Difference]: Start difference. First operand 523 states and 651 transitions. Second operand has 27 states, 24 states have (on average 4.208333333333333) internal successors, (101), 24 states have internal predecessors, (101), 13 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (20), 11 states have call predecessors, (20), 13 states have call successors, (20) [2022-11-23 15:06:24,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:24,132 INFO L93 Difference]: Finished difference Result 1465 states and 1896 transitions. [2022-11-23 15:06:24,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-23 15:06:24,133 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 4.208333333333333) internal successors, (101), 24 states have internal predecessors, (101), 13 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (20), 11 states have call predecessors, (20), 13 states have call successors, (20) Word has length 61 [2022-11-23 15:06:24,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:24,139 INFO L225 Difference]: With dead ends: 1465 [2022-11-23 15:06:24,139 INFO L226 Difference]: Without dead ends: 1144 [2022-11-23 15:06:24,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 140 SyntacticMatches, 5 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4222 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=1201, Invalid=9101, Unknown=0, NotChecked=0, Total=10302 [2022-11-23 15:06:24,144 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 1217 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:24,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 376 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 15:06:24,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2022-11-23 15:06:24,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 971. [2022-11-23 15:06:24,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 668 states have (on average 1.2035928143712575) internal successors, (804), 720 states have internal predecessors, (804), 135 states have call successors, (135), 109 states have call predecessors, (135), 167 states have return successors, (253), 167 states have call predecessors, (253), 135 states have call successors, (253) [2022-11-23 15:06:24,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1192 transitions. [2022-11-23 15:06:24,277 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1192 transitions. Word has length 61 [2022-11-23 15:06:24,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:24,277 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1192 transitions. [2022-11-23 15:06:24,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 4.208333333333333) internal successors, (101), 24 states have internal predecessors, (101), 13 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (20), 11 states have call predecessors, (20), 13 states have call successors, (20) [2022-11-23 15:06:24,278 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1192 transitions. [2022-11-23 15:06:24,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-23 15:06:24,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:24,281 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:06:24,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:06:24,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:06:24,488 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:24,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:24,488 INFO L85 PathProgramCache]: Analyzing trace with hash 2143371024, now seen corresponding path program 1 times [2022-11-23 15:06:24,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:24,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390828988] [2022-11-23 15:06:24,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:24,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:24,636 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-23 15:06:24,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:24,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390828988] [2022-11-23 15:06:24,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390828988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:06:24,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:06:24,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:06:24,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765654208] [2022-11-23 15:06:24,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:06:24,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:06:24,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:24,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:06:24,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:06:24,639 INFO L87 Difference]: Start difference. First operand 971 states and 1192 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-23 15:06:24,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:24,830 INFO L93 Difference]: Finished difference Result 1029 states and 1269 transitions. [2022-11-23 15:06:24,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:06:24,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 95 [2022-11-23 15:06:24,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:24,837 INFO L225 Difference]: With dead ends: 1029 [2022-11-23 15:06:24,837 INFO L226 Difference]: Without dead ends: 1027 [2022-11-23 15:06:24,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:06:24,839 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 49 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:24,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 158 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:06:24,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-11-23 15:06:24,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 971. [2022-11-23 15:06:24,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 668 states have (on average 1.1826347305389222) internal successors, (790), 720 states have internal predecessors, (790), 135 states have call successors, (135), 109 states have call predecessors, (135), 167 states have return successors, (253), 167 states have call predecessors, (253), 135 states have call successors, (253) [2022-11-23 15:06:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1178 transitions. [2022-11-23 15:06:24,976 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1178 transitions. Word has length 95 [2022-11-23 15:06:24,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:24,976 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1178 transitions. [2022-11-23 15:06:24,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-23 15:06:24,977 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1178 transitions. [2022-11-23 15:06:24,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-23 15:06:24,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:24,980 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2022-11-23 15:06:24,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:06:24,980 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:24,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:24,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1850745064, now seen corresponding path program 1 times [2022-11-23 15:06:24,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:24,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942449421] [2022-11-23 15:06:24,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:24,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:25,352 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 17 proven. 41 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 15:06:25,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:25,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942449421] [2022-11-23 15:06:25,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942449421] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:06:25,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544238745] [2022-11-23 15:06:25,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:25,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:06:25,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:06:25,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:06:25,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:06:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:25,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 15:06:25,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:06:25,543 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 15:06:25,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:06:25,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544238745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:06:25,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:06:25,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 9 [2022-11-23 15:06:25,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500400789] [2022-11-23 15:06:25,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:06:25,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:06:25,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:25,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:06:25,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:06:25,545 INFO L87 Difference]: Start difference. First operand 971 states and 1178 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 15:06:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:25,798 INFO L93 Difference]: Finished difference Result 1679 states and 2078 transitions. [2022-11-23 15:06:25,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:06:25,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 99 [2022-11-23 15:06:25,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:25,804 INFO L225 Difference]: With dead ends: 1679 [2022-11-23 15:06:25,804 INFO L226 Difference]: Without dead ends: 944 [2022-11-23 15:06:25,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-23 15:06:25,808 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 46 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:25,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 107 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:06:25,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-11-23 15:06:25,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 892. [2022-11-23 15:06:25,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 608 states have (on average 1.15625) internal successors, (703), 655 states have internal predecessors, (703), 130 states have call successors, (130), 109 states have call predecessors, (130), 153 states have return successors, (198), 153 states have call predecessors, (198), 130 states have call successors, (198) [2022-11-23 15:06:25,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1031 transitions. [2022-11-23 15:06:25,922 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1031 transitions. Word has length 99 [2022-11-23 15:06:25,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:25,924 INFO L495 AbstractCegarLoop]: Abstraction has 892 states and 1031 transitions. [2022-11-23 15:06:25,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 15:06:25,924 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1031 transitions. [2022-11-23 15:06:25,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-23 15:06:25,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:25,933 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1] [2022-11-23 15:06:25,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:06:26,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:06:26,139 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:26,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:26,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2048533630, now seen corresponding path program 2 times [2022-11-23 15:06:26,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:26,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002026192] [2022-11-23 15:06:26,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:26,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:26,967 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 32 proven. 19 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-23 15:06:26,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:26,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002026192] [2022-11-23 15:06:26,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002026192] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:06:26,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115973539] [2022-11-23 15:06:26,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:06:26,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:06:26,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:06:26,971 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:06:26,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:06:27,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 15:06:27,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:06:27,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 15:06:27,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:06:27,182 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 15:06:27,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:06:27,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115973539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:06:27,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:06:27,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 17 [2022-11-23 15:06:27,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542947946] [2022-11-23 15:06:27,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:06:27,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:06:27,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:27,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:06:27,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-23 15:06:27,185 INFO L87 Difference]: Start difference. First operand 892 states and 1031 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 15:06:27,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:27,486 INFO L93 Difference]: Finished difference Result 1758 states and 2082 transitions. [2022-11-23 15:06:27,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:06:27,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 103 [2022-11-23 15:06:27,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:27,492 INFO L225 Difference]: With dead ends: 1758 [2022-11-23 15:06:27,493 INFO L226 Difference]: Without dead ends: 1066 [2022-11-23 15:06:27,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-11-23 15:06:27,496 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 56 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:27,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 309 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:06:27,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2022-11-23 15:06:27,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1020. [2022-11-23 15:06:27,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 697 states have (on average 1.1477761836441893) internal successors, (800), 752 states have internal predecessors, (800), 152 states have call successors, (152), 124 states have call predecessors, (152), 170 states have return successors, (228), 169 states have call predecessors, (228), 152 states have call successors, (228) [2022-11-23 15:06:27,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1180 transitions. [2022-11-23 15:06:27,675 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1180 transitions. Word has length 103 [2022-11-23 15:06:27,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:27,675 INFO L495 AbstractCegarLoop]: Abstraction has 1020 states and 1180 transitions. [2022-11-23 15:06:27,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 15:06:27,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1180 transitions. [2022-11-23 15:06:27,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-23 15:06:27,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:27,678 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:06:27,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:06:27,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 15:06:27,885 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:27,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:27,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1808422920, now seen corresponding path program 2 times [2022-11-23 15:06:27,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:27,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575911888] [2022-11-23 15:06:27,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:27,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:29,782 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 23 proven. 90 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 15:06:29,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:29,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575911888] [2022-11-23 15:06:29,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575911888] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:06:29,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628386840] [2022-11-23 15:06:29,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:06:29,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:06:29,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:06:29,785 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:06:29,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 15:06:29,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 15:06:29,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:06:29,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 15:06:29,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:06:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-11-23 15:06:30,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:06:30,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628386840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:06:30,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:06:30,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [28] total 32 [2022-11-23 15:06:30,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191998191] [2022-11-23 15:06:30,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:06:30,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:06:30,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:30,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:06:30,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2022-11-23 15:06:30,033 INFO L87 Difference]: Start difference. First operand 1020 states and 1180 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 15:06:30,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:30,332 INFO L93 Difference]: Finished difference Result 1760 states and 2036 transitions. [2022-11-23 15:06:30,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:06:30,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 121 [2022-11-23 15:06:30,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:30,339 INFO L225 Difference]: With dead ends: 1760 [2022-11-23 15:06:30,339 INFO L226 Difference]: Without dead ends: 944 [2022-11-23 15:06:30,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=1048, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 15:06:30,342 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 29 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:30,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 290 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:06:30,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-11-23 15:06:30,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 944. [2022-11-23 15:06:30,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 644 states have (on average 1.1366459627329193) internal successors, (732), 693 states have internal predecessors, (732), 140 states have call successors, (140), 119 states have call predecessors, (140), 159 states have return successors, (202), 156 states have call predecessors, (202), 140 states have call successors, (202) [2022-11-23 15:06:30,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1074 transitions. [2022-11-23 15:06:30,473 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1074 transitions. Word has length 121 [2022-11-23 15:06:30,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:30,474 INFO L495 AbstractCegarLoop]: Abstraction has 944 states and 1074 transitions. [2022-11-23 15:06:30,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 15:06:30,474 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1074 transitions. [2022-11-23 15:06:30,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-23 15:06:30,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:30,477 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2022-11-23 15:06:30,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:06:30,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 15:06:30,683 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:30,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:30,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1601086830, now seen corresponding path program 2 times [2022-11-23 15:06:30,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:30,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685489624] [2022-11-23 15:06:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:30,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:31,151 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 51 proven. 52 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-23 15:06:31,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:31,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685489624] [2022-11-23 15:06:31,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685489624] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:06:31,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693672801] [2022-11-23 15:06:31,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:06:31,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:06:31,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:06:31,155 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:06:31,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:06:31,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 15:06:31,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:06:31,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-23 15:06:31,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:06:31,491 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 76 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-23 15:06:31,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:06:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 56 proven. 7 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-23 15:06:32,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693672801] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:06:32,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1633025616] [2022-11-23 15:06:32,053 INFO L159 IcfgInterpreter]: Started Sifa with 53 locations of interest [2022-11-23 15:06:32,053 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:06:32,055 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:06:32,055 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:06:32,056 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:06:34,716 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 23 for LOIs [2022-11-23 15:06:34,720 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2022-11-23 15:06:35,023 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 38 for LOIs [2022-11-23 15:06:35,176 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 37 for LOIs [2022-11-23 15:06:35,395 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 48 for LOIs [2022-11-23 15:06:35,407 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 22 for LOIs [2022-11-23 15:06:35,410 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 23 for LOIs [2022-11-23 15:06:35,412 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 48 for LOIs [2022-11-23 15:06:35,419 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:06:41,519 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '28287#(and (= |timeShift_getWaterLevel_~retValue_acc~11#1| ~waterLevel~0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 0)) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| |timeShift_getWaterLevel_#res#1|) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= |timeShift_getWaterLevel_~retValue_acc~11#1| |timeShift_getWaterLevel_#res#1|) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| 0) (<= 0 ~methaneLevelCritical~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1|) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-23 15:06:41,520 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:06:41,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:06:41,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 7] total 21 [2022-11-23 15:06:41,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542345785] [2022-11-23 15:06:41,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:06:41,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 15:06:41,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:41,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 15:06:41,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=3007, Unknown=0, NotChecked=0, Total=3306 [2022-11-23 15:06:41,523 INFO L87 Difference]: Start difference. First operand 944 states and 1074 transitions. Second operand has 21 states, 19 states have (on average 6.894736842105263) internal successors, (131), 19 states have internal predecessors, (131), 9 states have call successors, (30), 6 states have call predecessors, (30), 7 states have return successors, (32), 10 states have call predecessors, (32), 8 states have call successors, (32) [2022-11-23 15:06:44,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:44,015 INFO L93 Difference]: Finished difference Result 1956 states and 2325 transitions. [2022-11-23 15:06:44,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-23 15:06:44,016 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 6.894736842105263) internal successors, (131), 19 states have internal predecessors, (131), 9 states have call successors, (30), 6 states have call predecessors, (30), 7 states have return successors, (32), 10 states have call predecessors, (32), 8 states have call successors, (32) Word has length 125 [2022-11-23 15:06:44,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:44,018 INFO L225 Difference]: With dead ends: 1956 [2022-11-23 15:06:44,018 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 15:06:44,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 321 SyntacticMatches, 23 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4085 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=872, Invalid=8830, Unknown=0, NotChecked=0, Total=9702 [2022-11-23 15:06:44,025 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 789 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:44,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 238 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 15:06:44,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 15:06:44,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 15:06:44,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:06:44,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 15:06:44,027 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 125 [2022-11-23 15:06:44,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:44,027 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 15:06:44,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 6.894736842105263) internal successors, (131), 19 states have internal predecessors, (131), 9 states have call successors, (30), 6 states have call predecessors, (30), 7 states have return successors, (32), 10 states have call predecessors, (32), 8 states have call successors, (32) [2022-11-23 15:06:44,027 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 15:06:44,028 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 15:06:44,030 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:06:44,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:06:44,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:06:44,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 15:06:52,274 INFO L895 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 278 285) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= 1 ~waterLevel~0)) (= |old(~pumpRunning~0)| 0) (= 0 ~systemActive~0)) [2022-11-23 15:06:52,275 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 278 285) no Hoare annotation was computed. [2022-11-23 15:06:52,275 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 168 174) no Hoare annotation was computed. [2022-11-23 15:06:52,275 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 168 174) the Hoare annotation is: true [2022-11-23 15:06:52,275 INFO L895 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 942 953) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0))) (.cse1 (= |old(~methaneLevelCritical~0)| ~methaneLevelCritical~0)) (.cse2 (not (<= 2 ~waterLevel~0))) (.cse3 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse3) (or (not (= |old(~methaneLevelCritical~0)| 0)) .cse1 .cse2 .cse3))) [2022-11-23 15:06:52,275 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 942 953) no Hoare annotation was computed. [2022-11-23 15:06:52,276 INFO L902 garLoopResultBuilder]: At program point L480(lines 455 484) the Hoare annotation is: true [2022-11-23 15:06:52,276 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 455 484) no Hoare annotation was computed. [2022-11-23 15:06:52,276 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 455 484) the Hoare annotation is: true [2022-11-23 15:06:52,276 INFO L899 garLoopResultBuilder]: For program point L476(line 476) no Hoare annotation was computed. [2022-11-23 15:06:52,276 INFO L899 garLoopResultBuilder]: For program point L469(lines 469 473) no Hoare annotation was computed. [2022-11-23 15:06:52,276 INFO L902 garLoopResultBuilder]: At program point L469-1(lines 469 473) the Hoare annotation is: true [2022-11-23 15:06:52,276 INFO L902 garLoopResultBuilder]: At program point L465-2(lines 465 479) the Hoare annotation is: true [2022-11-23 15:06:52,277 INFO L902 garLoopResultBuilder]: At program point L461(line 461) the Hoare annotation is: true [2022-11-23 15:06:52,277 INFO L899 garLoopResultBuilder]: For program point L461-1(line 461) no Hoare annotation was computed. [2022-11-23 15:06:52,277 INFO L895 garLoopResultBuilder]: At program point L155-1(lines 155 161) the Hoare annotation is: (let ((.cse2 (= 0 ~systemActive~0))) (let ((.cse9 (= ~pumpRunning~0 0)) (.cse8 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse10 (not .cse2))) (let ((.cse1 (and .cse8 .cse10)) (.cse6 (not (= |old(~waterLevel~0)| 2))) (.cse5 (= ~methaneLevelCritical~0 0)) (.cse4 (and .cse9 (<= 1 ~waterLevel~0) .cse10)) (.cse3 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse7 (= ~waterLevel~0 1))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse1 .cse2 .cse4 .cse3) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse5 .cse6 .cse2 .cse7) (or .cse6 .cse8 .cse2 .cse7) (or .cse5 .cse2 .cse4 .cse3) (or .cse0 (not (= |old(~waterLevel~0)| 1)) (and .cse9 .cse7) .cse2))))) [2022-11-23 15:06:52,277 INFO L895 garLoopResultBuilder]: At program point L242(line 242) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 |old(~waterLevel~0)|)) .cse0) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (= |timeShift_processEnvironment_~tmp~3#1| 0)) .cse0 (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-23 15:06:52,278 INFO L895 garLoopResultBuilder]: At program point L238(line 238) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0)) (.cse1 (not (<= 2 |old(~waterLevel~0)|)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 |old(~waterLevel~0)|)) .cse0) (or (not (= ~methaneLevelCritical~0 0)) .cse0 .cse1) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) .cse0 .cse1))) [2022-11-23 15:06:52,278 INFO L895 garLoopResultBuilder]: At program point L234(line 234) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 |old(~waterLevel~0)|)) .cse0) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) .cse0 (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-23 15:06:52,278 INFO L899 garLoopResultBuilder]: For program point L234-1(line 234) no Hoare annotation was computed. [2022-11-23 15:06:52,278 INFO L895 garLoopResultBuilder]: At program point L247(line 247) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (<= 1 |old(~waterLevel~0)|))) (.cse3 (= ~pumpRunning~0 0)) (.cse2 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (= |old(~waterLevel~0)| ~waterLevel~0) .cse2) (or .cse0 .cse3 .cse1 .cse2) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse3) .cse2 (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-23 15:06:52,279 INFO L895 garLoopResultBuilder]: At program point L247-1(lines 228 252) the Hoare annotation is: (let ((.cse2 (= 0 ~systemActive~0))) (let ((.cse9 (= ~pumpRunning~0 0)) (.cse8 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse10 (not .cse2))) (let ((.cse1 (and .cse8 .cse10)) (.cse6 (not (= |old(~waterLevel~0)| 2))) (.cse5 (= ~methaneLevelCritical~0 0)) (.cse4 (and .cse9 (<= 1 ~waterLevel~0) .cse10)) (.cse3 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse7 (= ~waterLevel~0 1))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse1 .cse2 .cse4 .cse3) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse5 .cse6 .cse2 .cse7) (or .cse6 .cse8 .cse2 .cse7) (or .cse5 .cse2 .cse4 .cse3) (or .cse0 (not (= |old(~waterLevel~0)| 1)) (and .cse9 .cse7) .cse2))))) [2022-11-23 15:06:52,279 INFO L899 garLoopResultBuilder]: For program point L148-1(lines 147 166) no Hoare annotation was computed. [2022-11-23 15:06:52,279 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 |old(~waterLevel~0)|)) .cse0) (or .cse0 (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-23 15:06:52,279 INFO L899 garLoopResultBuilder]: For program point L236(lines 236 244) no Hoare annotation was computed. [2022-11-23 15:06:52,280 INFO L899 garLoopResultBuilder]: For program point L232(lines 232 249) no Hoare annotation was computed. [2022-11-23 15:06:52,280 INFO L899 garLoopResultBuilder]: For program point L402(lines 402 408) no Hoare annotation was computed. [2022-11-23 15:06:52,280 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 144 167) the Hoare annotation is: (let ((.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse1 (= 0 ~systemActive~0))) (and (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0) .cse1 (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) .cse0) (not (<= 1 |old(~waterLevel~0)|)) .cse1))) [2022-11-23 15:06:52,280 INFO L895 garLoopResultBuilder]: At program point L398(lines 398 411) the Hoare annotation is: (let ((.cse5 (<= 2 |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1|)) (.cse6 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse10 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| 1)) (.cse11 (= ~waterLevel~0 1))) (let ((.cse0 (= ~methaneLevelCritical~0 0)) (.cse1 (and .cse10 .cse11)) (.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse4 (= ~pumpRunning~0 0)) (.cse9 (not (= |old(~pumpRunning~0)| 0))) (.cse8 (and .cse5 .cse6)) (.cse3 (= 0 ~systemActive~0)) (.cse7 (not (<= 2 |old(~waterLevel~0)|)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 .cse1 .cse2 .cse3) (or (and .cse4 (<= 1 |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1|) (<= 1 ~waterLevel~0)) (and .cse0 .cse5 .cse6) .cse3 .cse7) (or .cse1 .cse8 .cse2 .cse3) (or .cse9 (not (= |old(~waterLevel~0)| 1)) (and .cse4 .cse10 .cse11) .cse3) (or .cse9 .cse8 .cse3 .cse7)))) [2022-11-23 15:06:52,281 INFO L895 garLoopResultBuilder]: At program point L398-1(lines 390 414) the Hoare annotation is: (let ((.cse3 (= 0 ~systemActive~0))) (let ((.cse10 (<= 2 |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1|)) (.cse11 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse9 (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| 1)) (.cse13 (= ~waterLevel~0 1)) (.cse12 (= ~pumpRunning~0 0)) (.cse14 (not .cse3))) (let ((.cse0 (= ~methaneLevelCritical~0 0)) (.cse4 (and .cse12 (<= 1 |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1|) (<= 1 ~waterLevel~0) .cse14)) (.cse1 (and .cse9 .cse13)) (.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse5 (and .cse10 .cse11 .cse14)) (.cse6 (not (<= 2 |old(~waterLevel~0)|))) (.cse7 (not (= |old(~pumpRunning~0)| 0))) (.cse8 (not (= |old(~waterLevel~0)| 1)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse3 .cse5 .cse6) (or .cse7 .cse8 .cse9 .cse3) (or .cse0 .cse4 .cse3 .cse6) (or .cse1 (and .cse10 .cse11) .cse2 .cse3) (or .cse7 .cse3 .cse5 .cse6) (or .cse7 .cse8 (and .cse12 .cse13) .cse3))))) [2022-11-23 15:06:52,281 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 144 167) no Hoare annotation was computed. [2022-11-23 15:06:52,281 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2022-11-23 15:06:52,281 INFO L895 garLoopResultBuilder]: At program point L122(lines 73 123) the Hoare annotation is: false [2022-11-23 15:06:52,281 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 100) no Hoare annotation was computed. [2022-11-23 15:06:52,282 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-23 15:06:52,282 INFO L895 garLoopResultBuilder]: At program point L94-1(lines 94 100) the Hoare annotation is: (let ((.cse1 (<= 2 ~waterLevel~0)) (.cse5 (= ~methaneLevelCritical~0 0)) (.cse6 (= ~pumpRunning~0 0)) (.cse0 (or (not (= |old(~methaneLevelCritical~0)| 0)) (= ~methaneLevelCritical~0 1))) (.cse2 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse7 (= ~waterLevel~0 1)) (.cse4 (= |ULTIMATE.start_main_~tmp~8#1| ~systemActive~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse1 .cse2 .cse3 .cse4) (and .cse6 .cse5 .cse2 .cse3 .cse7 .cse4) (and .cse6 .cse0 .cse2 .cse3 .cse7 .cse4))) [2022-11-23 15:06:52,282 INFO L895 garLoopResultBuilder]: At program point L536(lines 536 543) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 0) (= |ULTIMATE.start_main_~tmp~8#1| 1) (= ~waterLevel~0 1) (= |ULTIMATE.start_main_~tmp~8#1| ~systemActive~0)) [2022-11-23 15:06:52,282 INFO L895 garLoopResultBuilder]: At program point L119(lines 74 121) the Hoare annotation is: (let ((.cse2 (<= 2 ~waterLevel~0)) (.cse1 (or (not (= |old(~methaneLevelCritical~0)| 0)) (= ~methaneLevelCritical~0 1))) (.cse0 (= ~pumpRunning~0 0)) (.cse6 (= ~methaneLevelCritical~0 0)) (.cse3 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse4 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~tmp~8#1| ~systemActive~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse3 .cse4 (= ~waterLevel~0 1) .cse5) (and .cse0 .cse6 .cse3 .cse4 (<= 1 ~waterLevel~0) .cse5))) [2022-11-23 15:06:52,283 INFO L895 garLoopResultBuilder]: At program point L86(line 86) the Hoare annotation is: (let ((.cse4 (= ~pumpRunning~0 0)) (.cse0 (= ~methaneLevelCritical~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~tmp~8#1| ~systemActive~0))) (or (and .cse0 (<= 2 ~waterLevel~0) .cse1 .cse2 .cse3) (and .cse4 (or (not (= |old(~methaneLevelCritical~0)| 0)) (= ~methaneLevelCritical~0 1)) .cse1 .cse2 (<= 1 ~waterLevel~0) .cse3) (and .cse4 .cse0 .cse1 .cse2 (= ~waterLevel~0 1) .cse3))) [2022-11-23 15:06:52,283 INFO L902 garLoopResultBuilder]: At program point L536-2(lines 536 543) the Hoare annotation is: true [2022-11-23 15:06:52,283 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 15:06:52,283 INFO L895 garLoopResultBuilder]: At program point L112-2(lines 104 117) the Hoare annotation is: (let ((.cse1 (<= 2 ~waterLevel~0)) (.cse5 (= ~methaneLevelCritical~0 0)) (.cse6 (= ~pumpRunning~0 0)) (.cse0 (or (not (= |old(~methaneLevelCritical~0)| 0)) (= ~methaneLevelCritical~0 1))) (.cse2 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse7 (= ~waterLevel~0 1)) (.cse4 (= |ULTIMATE.start_main_~tmp~8#1| ~systemActive~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse1 .cse2 .cse3 .cse4) (and .cse6 .cse5 .cse2 .cse3 .cse7 .cse4) (and .cse6 .cse0 .cse2 .cse3 .cse7 .cse4))) [2022-11-23 15:06:52,284 INFO L899 garLoopResultBuilder]: For program point L75(lines 74 121) no Hoare annotation was computed. [2022-11-23 15:06:52,284 INFO L895 garLoopResultBuilder]: At program point L96(line 96) the Hoare annotation is: (let ((.cse2 (<= 2 ~waterLevel~0)) (.cse1 (or (not (= |old(~methaneLevelCritical~0)| 0)) (= ~methaneLevelCritical~0 1))) (.cse0 (= ~pumpRunning~0 0)) (.cse6 (= ~methaneLevelCritical~0 0)) (.cse3 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse4 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~tmp~8#1| ~systemActive~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse3 .cse4 (= ~waterLevel~0 1) .cse5) (and .cse0 .cse6 .cse3 .cse4 (<= 1 ~waterLevel~0) .cse5))) [2022-11-23 15:06:52,284 INFO L902 garLoopResultBuilder]: At program point L125(lines 64 129) the Hoare annotation is: true [2022-11-23 15:06:52,284 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 90) no Hoare annotation was computed. [2022-11-23 15:06:52,284 INFO L899 garLoopResultBuilder]: For program point L84-1(lines 84 90) no Hoare annotation was computed. [2022-11-23 15:06:52,285 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 176 200) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (<= 1 ~waterLevel~0)) (= 0 ~systemActive~0)) [2022-11-23 15:06:52,285 INFO L895 garLoopResultBuilder]: At program point L190(line 190) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (not (<= 1 ~waterLevel~0)) (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 0)) .cse1) (or .cse0 (not (<= 2 ~waterLevel~0)) .cse1))) [2022-11-23 15:06:52,285 INFO L899 garLoopResultBuilder]: For program point L184(lines 184 192) no Hoare annotation was computed. [2022-11-23 15:06:52,285 INFO L895 garLoopResultBuilder]: At program point L180(lines 180 197) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (<= 1 ~waterLevel~0)) (= 0 ~systemActive~0)) [2022-11-23 15:06:52,286 INFO L895 garLoopResultBuilder]: At program point L195(line 195) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 ~waterLevel~0)) (= 0 ~systemActive~0)) [2022-11-23 15:06:52,286 INFO L899 garLoopResultBuilder]: For program point L195-1(lines 176 200) no Hoare annotation was computed. [2022-11-23 15:06:52,286 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 176 200) no Hoare annotation was computed. [2022-11-23 15:06:52,286 INFO L895 garLoopResultBuilder]: At program point L266(line 266) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 ~waterLevel~0)) (and (= ~pumpRunning~0 0) (<= 2 ~waterLevel~0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 1)) (= 0 ~systemActive~0)) [2022-11-23 15:06:52,286 INFO L895 garLoopResultBuilder]: At program point L266-1(line 266) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1) (or .cse0 (not (<= 2 ~waterLevel~0)) .cse1 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 1) (= ~methaneLevelCritical~0 |processEnvironment__wrappee__highWaterSensor_activatePump_#t~ret11#1|))))) [2022-11-23 15:06:52,287 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 930 941) no Hoare annotation was computed. [2022-11-23 15:06:52,287 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 930 941) the Hoare annotation is: (let ((.cse3 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (<= 2 |old(~waterLevel~0)|)))) (and (or (let ((.cse0 (not (= ~pumpRunning~0 0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1) (or .cse0 .cse1 .cse2))) .cse3) (or (not (= ~methaneLevelCritical~0 0)) .cse3 .cse1 .cse2))) [2022-11-23 15:06:52,287 INFO L895 garLoopResultBuilder]: At program point L221(line 221) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~waterLevel~0))) (.cse1 (= 0 ~systemActive~0))) (and (or (= ~pumpRunning~0 0) .cse0 .cse1) (or .cse0 (= |old(~pumpRunning~0)| 0) .cse1))) [2022-11-23 15:06:52,287 INFO L899 garLoopResultBuilder]: For program point L221-1(lines 202 226) no Hoare annotation was computed. [2022-11-23 15:06:52,287 INFO L895 garLoopResultBuilder]: At program point L216(line 216) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (= 0 ~systemActive~0)) [2022-11-23 15:06:52,288 INFO L895 garLoopResultBuilder]: At program point L212(line 212) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~waterLevel~0))) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (<= 1 |processEnvironment__wrappee__methaneQuery_~tmp~2#1|))) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1))) [2022-11-23 15:06:52,288 INFO L899 garLoopResultBuilder]: For program point L210(lines 210 218) no Hoare annotation was computed. [2022-11-23 15:06:52,288 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryENTRY(lines 202 226) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= 1 ~waterLevel~0)) (= 0 ~systemActive~0)) [2022-11-23 15:06:52,288 INFO L895 garLoopResultBuilder]: At program point L206(lines 206 223) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (<= 1 ~waterLevel~0)) (= 0 ~systemActive~0)) [2022-11-23 15:06:52,288 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 202 226) no Hoare annotation was computed. [2022-11-23 15:06:52,289 INFO L902 garLoopResultBuilder]: At program point isMethaneAlarmENTRY(lines 286 296) the Hoare annotation is: true [2022-11-23 15:06:52,289 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 286 296) no Hoare annotation was computed. [2022-11-23 15:06:52,292 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:06:52,295 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:06:52,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:06:52 BoogieIcfgContainer [2022-11-23 15:06:52,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:06:52,351 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:06:52,351 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:06:52,352 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:06:52,352 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:05:58" (3/4) ... [2022-11-23 15:06:52,355 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 15:06:52,361 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2022-11-23 15:06:52,362 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-23 15:06:52,362 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-23 15:06:52,362 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-23 15:06:52,362 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-23 15:06:52,363 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2022-11-23 15:06:52,363 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-23 15:06:52,363 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2022-11-23 15:06:52,363 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2022-11-23 15:06:52,384 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 54 nodes and edges [2022-11-23 15:06:52,384 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-23 15:06:52,385 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-23 15:06:52,385 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:06:52,386 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:06:52,416 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((pumpRunning == 0 && (!(\old(methaneLevelCritical) == 0) || methaneLevelCritical == 1)) && 2 <= waterLevel) && tmp == 1) && splverifierCounter == 0) && tmp == systemActive) || ((((methaneLevelCritical == 0 && 2 <= waterLevel) && tmp == 1) && splverifierCounter == 0) && tmp == systemActive)) || (((((pumpRunning == 0 && (!(\old(methaneLevelCritical) == 0) || methaneLevelCritical == 1)) && tmp == 1) && splverifierCounter == 0) && waterLevel == 1) && tmp == systemActive)) || (((((pumpRunning == 0 && methaneLevelCritical == 0) && tmp == 1) && splverifierCounter == 0) && 1 <= waterLevel) && tmp == systemActive) [2022-11-23 15:06:52,417 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) || 0 == systemActive) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) [2022-11-23 15:06:52,418 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || (\old(waterLevel) == waterLevel && !(0 == systemActive))) || 0 == systemActive) || !(2 <= \old(waterLevel))) && ((((\old(waterLevel) == waterLevel && !(0 == systemActive)) || 0 == systemActive) || ((pumpRunning == 0 && 1 <= waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && ((((pumpRunning == \old(pumpRunning) || methaneLevelCritical == 0) || !(\old(waterLevel) == 2)) || 0 == systemActive) || waterLevel == 1)) && (((!(\old(waterLevel) == 2) || \old(waterLevel) == waterLevel) || 0 == systemActive) || waterLevel == 1)) && (((methaneLevelCritical == 0 || 0 == systemActive) || ((pumpRunning == 0 && 1 <= waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) [2022-11-23 15:06:52,419 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(methaneLevelCritical) == 0) || methaneLevelCritical == 1) && 2 <= waterLevel) && tmp == 1) && splverifierCounter == 0) && tmp == systemActive) || ((((methaneLevelCritical == 0 && 2 <= waterLevel) && tmp == 1) && splverifierCounter == 0) && tmp == systemActive)) || (((((pumpRunning == 0 && methaneLevelCritical == 0) && tmp == 1) && splverifierCounter == 0) && waterLevel == 1) && tmp == systemActive)) || (((((pumpRunning == 0 && (!(\old(methaneLevelCritical) == 0) || methaneLevelCritical == 1)) && tmp == 1) && splverifierCounter == 0) && waterLevel == 1) && tmp == systemActive) [2022-11-23 15:06:52,419 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || (\old(waterLevel) == waterLevel && !(0 == systemActive))) || 0 == systemActive) || !(2 <= \old(waterLevel))) && ((((\old(waterLevel) == waterLevel && !(0 == systemActive)) || 0 == systemActive) || ((pumpRunning == 0 && 1 <= waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && ((((pumpRunning == \old(pumpRunning) || methaneLevelCritical == 0) || !(\old(waterLevel) == 2)) || 0 == systemActive) || waterLevel == 1)) && (((!(\old(waterLevel) == 2) || \old(waterLevel) == waterLevel) || 0 == systemActive) || waterLevel == 1)) && (((methaneLevelCritical == 0 || 0 == systemActive) || ((pumpRunning == 0 && 1 <= waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) [2022-11-23 15:06:52,420 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (pumpRunning == \old(pumpRunning) || !(1 <= waterLevel)) || 0 == systemActive [2022-11-23 15:06:52,422 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 <= waterLevel)) || 0 == systemActive [2022-11-23 15:06:52,422 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((pumpRunning == \old(pumpRunning) || methaneLevelCritical == 0) || (tmp == 1 && waterLevel == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) && (((((pumpRunning == 0 && 1 <= tmp) && 1 <= waterLevel) || ((methaneLevelCritical == 0 && 2 <= tmp) && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(2 <= \old(waterLevel)))) && ((((tmp == 1 && waterLevel == 1) || (2 <= tmp && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || (2 <= tmp && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(2 <= \old(waterLevel))) [2022-11-23 15:06:52,423 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((pumpRunning == \old(pumpRunning) || methaneLevelCritical == 0) || (tmp == 1 && waterLevel == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) && ((((((pumpRunning == 0 && 1 <= tmp) && 1 <= waterLevel) && !(0 == systemActive)) || 0 == systemActive) || ((2 <= tmp && \old(waterLevel) == waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || tmp == 1) || 0 == systemActive)) && (((methaneLevelCritical == 0 || (((pumpRunning == 0 && 1 <= tmp) && 1 <= waterLevel) && !(0 == systemActive))) || 0 == systemActive) || !(2 <= \old(waterLevel)))) && ((((tmp == 1 && waterLevel == 1) || (2 <= tmp && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || 0 == systemActive) || ((2 <= tmp && \old(waterLevel) == waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) [2022-11-23 15:06:52,423 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || !(2 <= waterLevel)) || 0 == systemActive) || ((pumpRunning == 0 && tmp == 1) && methaneLevelCritical == aux-isMethaneAlarm()-aux)) [2022-11-23 15:06:52,426 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(\old(pumpRunning) == 0) || !(1 <= \old(waterLevel))) || 0 == systemActive) && (0 == systemActive || !(2 <= \old(waterLevel))) [2022-11-23 15:06:52,464 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:06:52,465 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:06:52,465 INFO L158 Benchmark]: Toolchain (without parser) took 55405.74ms. Allocated memory was 161.5MB in the beginning and 503.3MB in the end (delta: 341.8MB). Free memory was 130.3MB in the beginning and 244.2MB in the end (delta: -113.9MB). Peak memory consumption was 230.7MB. Max. memory is 16.1GB. [2022-11-23 15:06:52,466 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 71.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:06:52,466 INFO L158 Benchmark]: CACSL2BoogieTranslator took 485.47ms. Allocated memory is still 161.5MB. Free memory was 130.3MB in the beginning and 111.3MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 15:06:52,466 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.62ms. Allocated memory is still 161.5MB. Free memory was 111.3MB in the beginning and 108.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:06:52,467 INFO L158 Benchmark]: Boogie Preprocessor took 38.38ms. Allocated memory is still 161.5MB. Free memory was 108.9MB in the beginning and 107.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:06:52,467 INFO L158 Benchmark]: RCFGBuilder took 839.87ms. Allocated memory is still 161.5MB. Free memory was 107.2MB in the beginning and 80.4MB in the end (delta: 26.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-23 15:06:52,468 INFO L158 Benchmark]: TraceAbstraction took 53871.73ms. Allocated memory was 161.5MB in the beginning and 503.3MB in the end (delta: 341.8MB). Free memory was 79.6MB in the beginning and 249.4MB in the end (delta: -169.8MB). Peak memory consumption was 260.4MB. Max. memory is 16.1GB. [2022-11-23 15:06:52,468 INFO L158 Benchmark]: Witness Printer took 113.54ms. Allocated memory is still 503.3MB. Free memory was 249.4MB in the beginning and 244.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 15:06:52,470 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 117.4MB. Free memory is still 71.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 485.47ms. Allocated memory is still 161.5MB. Free memory was 130.3MB in the beginning and 111.3MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.62ms. Allocated memory is still 161.5MB. Free memory was 111.3MB in the beginning and 108.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.38ms. Allocated memory is still 161.5MB. Free memory was 108.9MB in the beginning and 107.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 839.87ms. Allocated memory is still 161.5MB. Free memory was 107.2MB in the beginning and 80.4MB in the end (delta: 26.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 53871.73ms. Allocated memory was 161.5MB in the beginning and 503.3MB in the end (delta: 341.8MB). Free memory was 79.6MB in the beginning and 249.4MB in the end (delta: -169.8MB). Peak memory consumption was 260.4MB. Max. memory is 16.1GB. * Witness Printer took 113.54ms. Allocated memory is still 503.3MB. Free memory was 249.4MB in the beginning and 244.2MB in the end (delta: 5.2MB). 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 - PositiveResult [Line: 54]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 53.7s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2785 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2736 mSDsluCounter, 2814 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1947 mSDsCounter, 1667 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4417 IncrementalHoareTripleChecker+Invalid, 6084 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1667 mSolverCounterUnsat, 867 mSDtfsCounter, 4417 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1153 GetRequests, 824 SyntacticMatches, 28 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8854 ImplicationChecksByTransitivity, 18.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1020occurred in iteration=12, InterpolantAutomatonStates: 174, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 480 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 41 LocationsWithAnnotation, 3112 PreInvPairs, 3514 NumberOfFragments, 1453 HoareAnnotationTreeSize, 3112 FomulaSimplifications, 24744 FormulaSimplificationTreeSizeReduction, 1.5s HoareSimplificationTime, 41 FomulaSimplificationsInter, 50264 FormulaSimplificationTreeSizeReductionInter, 6.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 1356 NumberOfCodeBlocks, 1175 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1521 ConstructedInterpolants, 0 QuantifiedInterpolants, 4354 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1543 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 21 InterpolantComputations, 12 PerfectInterpolantSequences, 851/1099 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 155]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || (\old(waterLevel) == waterLevel && !(0 == systemActive))) || 0 == systemActive) || !(2 <= \old(waterLevel))) && ((((\old(waterLevel) == waterLevel && !(0 == systemActive)) || 0 == systemActive) || ((pumpRunning == 0 && 1 <= waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && ((((pumpRunning == \old(pumpRunning) || methaneLevelCritical == 0) || !(\old(waterLevel) == 2)) || 0 == systemActive) || waterLevel == 1)) && (((!(\old(waterLevel) == 2) || \old(waterLevel) == waterLevel) || 0 == systemActive) || waterLevel == 1)) && (((methaneLevelCritical == 0 || 0 == systemActive) || ((pumpRunning == 0 && 1 <= waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: ((!(\old(pumpRunning) == 0) || !(1 <= \old(waterLevel))) || 0 == systemActive) && (0 == systemActive || !(2 <= \old(waterLevel))) - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: (((((((pumpRunning == 0 && (!(\old(methaneLevelCritical) == 0) || methaneLevelCritical == 1)) && 2 <= waterLevel) && tmp == 1) && splverifierCounter == 0) && tmp == systemActive) || ((((methaneLevelCritical == 0 && 2 <= waterLevel) && tmp == 1) && splverifierCounter == 0) && tmp == systemActive)) || (((((pumpRunning == 0 && (!(\old(methaneLevelCritical) == 0) || methaneLevelCritical == 1)) && tmp == 1) && splverifierCounter == 0) && waterLevel == 1) && tmp == systemActive)) || (((((pumpRunning == 0 && methaneLevelCritical == 0) && tmp == 1) && splverifierCounter == 0) && 1 <= waterLevel) && tmp == systemActive) - InvariantResult [Line: 536]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 228]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || (\old(waterLevel) == waterLevel && !(0 == systemActive))) || 0 == systemActive) || !(2 <= \old(waterLevel))) && ((((\old(waterLevel) == waterLevel && !(0 == systemActive)) || 0 == systemActive) || ((pumpRunning == 0 && 1 <= waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && ((((pumpRunning == \old(pumpRunning) || methaneLevelCritical == 0) || !(\old(waterLevel) == 2)) || 0 == systemActive) || waterLevel == 1)) && (((!(\old(waterLevel) == 2) || \old(waterLevel) == waterLevel) || 0 == systemActive) || waterLevel == 1)) && (((methaneLevelCritical == 0 || 0 == systemActive) || ((pumpRunning == 0 && 1 <= waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) - InvariantResult [Line: 144]: Loop Invariant Derived loop invariant: (((pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel) || 0 == systemActive) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) || 0 == systemActive) - InvariantResult [Line: 206]: Loop Invariant Derived loop invariant: (pumpRunning == \old(pumpRunning) || !(1 <= waterLevel)) || 0 == systemActive - InvariantResult [Line: 390]: Loop Invariant Derived loop invariant: (((((((((pumpRunning == \old(pumpRunning) || methaneLevelCritical == 0) || (tmp == 1 && waterLevel == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) && ((((((pumpRunning == 0 && 1 <= tmp) && 1 <= waterLevel) && !(0 == systemActive)) || 0 == systemActive) || ((2 <= tmp && \old(waterLevel) == waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || tmp == 1) || 0 == systemActive)) && (((methaneLevelCritical == 0 || (((pumpRunning == 0 && 1 <= tmp) && 1 <= waterLevel) && !(0 == systemActive))) || 0 == systemActive) || !(2 <= \old(waterLevel)))) && ((((tmp == 1 && waterLevel == 1) || (2 <= tmp && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || 0 == systemActive) || ((2 <= tmp && \old(waterLevel) == waterLevel) && !(0 == systemActive))) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive) - InvariantResult [Line: 465]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 286]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 94]: Loop Invariant Derived loop invariant: (((((((!(\old(methaneLevelCritical) == 0) || methaneLevelCritical == 1) && 2 <= waterLevel) && tmp == 1) && splverifierCounter == 0) && tmp == systemActive) || ((((methaneLevelCritical == 0 && 2 <= waterLevel) && tmp == 1) && splverifierCounter == 0) && tmp == systemActive)) || (((((pumpRunning == 0 && methaneLevelCritical == 0) && tmp == 1) && splverifierCounter == 0) && waterLevel == 1) && tmp == systemActive)) || (((((pumpRunning == 0 && (!(\old(methaneLevelCritical) == 0) || methaneLevelCritical == 1)) && tmp == 1) && splverifierCounter == 0) && waterLevel == 1) && tmp == systemActive) - InvariantResult [Line: 180]: Loop Invariant Derived loop invariant: ((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 <= waterLevel)) || 0 == systemActive - InvariantResult [Line: 398]: Loop Invariant Derived loop invariant: (((((((pumpRunning == \old(pumpRunning) || methaneLevelCritical == 0) || (tmp == 1 && waterLevel == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) && (((((pumpRunning == 0 && 1 <= tmp) && 1 <= waterLevel) || ((methaneLevelCritical == 0 && 2 <= tmp) && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(2 <= \old(waterLevel)))) && ((((tmp == 1 && waterLevel == 1) || (2 <= tmp && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || (2 <= tmp && \old(waterLevel) == waterLevel)) || 0 == systemActive) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 266]: Loop Invariant Derived loop invariant: ((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || !(2 <= waterLevel)) || 0 == systemActive) || ((pumpRunning == 0 && tmp == 1) && methaneLevelCritical == aux-isMethaneAlarm()-aux)) - InvariantResult [Line: 536]: Loop Invariant Derived loop invariant: (((pumpRunning == 0 && methaneLevelCritical == 0) && tmp == 1) && waterLevel == 1) && tmp == systemActive - InvariantResult [Line: 73]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 455]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-23 15:06:52,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff3c6407-fe5b-42ce-be8e-fa3e5416b88d/bin/utaipan-Q6hlc19bkW/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 Result: TRUE