./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product51.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product51.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --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 2165aefdca75c2370f155996346c5c4ea8ed352d96946243b70bd7ef162ab29f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:49:33,556 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:49:33,624 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 19:49:33,629 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:49:33,630 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:49:33,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:49:33,663 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:49:33,664 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:49:33,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:49:33,670 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:49:33,670 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:49:33,671 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:49:33,672 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:49:33,672 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:49:33,673 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:49:33,673 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:49:33,674 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:49:33,674 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:49:33,674 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:49:33,675 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:49:33,676 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:49:33,676 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:49:33,677 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:49:33,678 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:49:33,678 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:49:33,678 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:49:33,679 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:49:33,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:49:33,680 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:49:33,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:49:33,680 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:49:33,681 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:49:33,681 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:49:33,682 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:49:33,682 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:49:33,682 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:49:33,683 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:49:33,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:49:33,683 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:49:33,683 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:49:33,683 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 19:49:33,684 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:49:33,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:49:33,684 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:49:33,684 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 19:49:33,685 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:49:33,685 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:49:33,685 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2165aefdca75c2370f155996346c5c4ea8ed352d96946243b70bd7ef162ab29f [2023-12-02 19:49:33,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:49:33,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:49:33,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:49:33,942 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:49:33,942 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:49:33,944 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/minepump_spec4_product51.cil.c [2023-12-02 19:49:36,729 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:49:36,977 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:49:36,978 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/sv-benchmarks/c/product-lines/minepump_spec4_product51.cil.c [2023-12-02 19:49:36,992 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/data/fab839371/c3de7d7838794051b062f71895fbeca7/FLAG363714eea [2023-12-02 19:49:37,004 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/data/fab839371/c3de7d7838794051b062f71895fbeca7 [2023-12-02 19:49:37,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:49:37,008 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:49:37,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:49:37,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:49:37,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:49:37,014 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:49:37" (1/1) ... [2023-12-02 19:49:37,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fc1a6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:49:37, skipping insertion in model container [2023-12-02 19:49:37,016 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:49:37" (1/1) ... [2023-12-02 19:49:37,065 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:49:37,264 WARN L240 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_7fb4b82c-838c-4b33-95f2-b2b9896355c0/sv-benchmarks/c/product-lines/minepump_spec4_product51.cil.c[8940,8953] [2023-12-02 19:49:37,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:49:37,333 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:49:37,341 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [49] [2023-12-02 19:49:37,342 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [153] [2023-12-02 19:49:37,342 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [182] [2023-12-02 19:49:37,342 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [290] [2023-12-02 19:49:37,343 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [325] [2023-12-02 19:49:37,343 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [540] [2023-12-02 19:49:37,343 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [607] [2023-12-02 19:49:37,343 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [616] [2023-12-02 19:49:37,370 WARN L240 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_7fb4b82c-838c-4b33-95f2-b2b9896355c0/sv-benchmarks/c/product-lines/minepump_spec4_product51.cil.c[8940,8953] [2023-12-02 19:49:37,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:49:37,422 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:49:37,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:49:37 WrapperNode [2023-12-02 19:49:37,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:49:37,423 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:49:37,423 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:49:37,423 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:49:37,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:49:37" (1/1) ... [2023-12-02 19:49:37,440 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:49:37" (1/1) ... [2023-12-02 19:49:37,460 INFO L138 Inliner]: procedures = 56, calls = 100, calls flagged for inlining = 24, calls inlined = 20, statements flattened = 207 [2023-12-02 19:49:37,461 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:49:37,461 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:49:37,461 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:49:37,461 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:49:37,469 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:49:37" (1/1) ... [2023-12-02 19:49:37,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:49:37" (1/1) ... [2023-12-02 19:49:37,471 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:49:37" (1/1) ... [2023-12-02 19:49:37,472 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:49:37" (1/1) ... [2023-12-02 19:49:37,478 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:49:37" (1/1) ... [2023-12-02 19:49:37,483 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:49:37" (1/1) ... [2023-12-02 19:49:37,485 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:49:37" (1/1) ... [2023-12-02 19:49:37,487 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:49:37" (1/1) ... [2023-12-02 19:49:37,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:49:37,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:49:37,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:49:37,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:49:37,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:49:37" (1/1) ... [2023-12-02 19:49:37,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:49:37,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:49:37,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:49:37,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:49:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:49:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-12-02 19:49:37,566 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-12-02 19:49:37,566 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-02 19:49:37,567 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-02 19:49:37,567 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-02 19:49:37,567 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-02 19:49:37,567 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 19:49:37,567 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 19:49:37,567 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-12-02 19:49:37,567 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-12-02 19:49:37,568 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-12-02 19:49:37,568 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-12-02 19:49:37,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 19:49:37,568 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-12-02 19:49:37,568 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-12-02 19:49:37,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:49:37,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:49:37,648 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:49:37,650 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:49:37,888 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:49:37,993 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:49:37,993 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 19:49:37,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:49:37 BoogieIcfgContainer [2023-12-02 19:49:37,996 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:49:37,999 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:49:37,999 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:49:38,002 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:49:38,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:49:37" (1/3) ... [2023-12-02 19:49:38,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e4e3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:49:38, skipping insertion in model container [2023-12-02 19:49:38,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:49:37" (2/3) ... [2023-12-02 19:49:38,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e4e3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:49:38, skipping insertion in model container [2023-12-02 19:49:38,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:49:37" (3/3) ... [2023-12-02 19:49:38,005 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product51.cil.c [2023-12-02 19:49:38,025 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:49:38,026 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 19:49:38,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:49:38,094 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=LoopHeads, 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;@6384cdd9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:49:38,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 19:49:38,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 47 states have internal predecessors, (56), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 19:49:38,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 19:49:38,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:49:38,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:49:38,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:49:38,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:49:38,110 INFO L85 PathProgramCache]: Analyzing trace with hash 130738927, now seen corresponding path program 1 times [2023-12-02 19:49:38,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:49:38,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277083627] [2023-12-02 19:49:38,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:38,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:49:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:49:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:49:38,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:49:38,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277083627] [2023-12-02 19:49:38,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277083627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:49:38,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:49:38,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:49:38,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625958266] [2023-12-02 19:49:38,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:49:38,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 19:49:38,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:49:38,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 19:49:38,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 19:49:38,309 INFO L87 Difference]: Start difference. First operand has 59 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 47 states have internal predecessors, (56), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) 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) [2023-12-02 19:49:38,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:49:38,368 INFO L93 Difference]: Finished difference Result 116 states and 161 transitions. [2023-12-02 19:49:38,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 19:49:38,370 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 [2023-12-02 19:49:38,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:49:38,377 INFO L225 Difference]: With dead ends: 116 [2023-12-02 19:49:38,378 INFO L226 Difference]: Without dead ends: 54 [2023-12-02 19:49:38,381 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 [2023-12-02 19:49:38,384 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:49:38,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:49:38,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-02 19:49:38,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-02 19:49:38,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 43 states have internal predecessors, (48), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 19:49:38,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions. [2023-12-02 19:49:38,421 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 71 transitions. Word has length 12 [2023-12-02 19:49:38,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:49:38,422 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 71 transitions. [2023-12-02 19:49:38,422 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) [2023-12-02 19:49:38,422 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 71 transitions. [2023-12-02 19:49:38,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 19:49:38,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:49:38,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:49:38,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 19:49:38,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:49:38,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:49:38,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1608605387, now seen corresponding path program 1 times [2023-12-02 19:49:38,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:49:38,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882670637] [2023-12-02 19:49:38,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:38,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:49:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:49:38,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:49:38,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:49:38,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882670637] [2023-12-02 19:49:38,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882670637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:49:38,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:49:38,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:49:38,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103886866] [2023-12-02 19:49:38,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:49:38,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:49:38,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:49:38,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:49:38,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:49:38,520 INFO L87 Difference]: Start difference. First operand 54 states and 71 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) [2023-12-02 19:49:38,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:49:38,558 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2023-12-02 19:49:38,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:49:38,559 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 [2023-12-02 19:49:38,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:49:38,560 INFO L225 Difference]: With dead ends: 80 [2023-12-02 19:49:38,560 INFO L226 Difference]: Without dead ends: 46 [2023-12-02 19:49:38,561 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 [2023-12-02 19:49:38,563 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 14 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:49:38,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 75 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:49:38,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-02 19:49:38,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-12-02 19:49:38,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.4) internal successors, (42), 38 states have internal predecessors, (42), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 19:49:38,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2023-12-02 19:49:38,572 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 13 [2023-12-02 19:49:38,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:49:38,573 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2023-12-02 19:49:38,573 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) [2023-12-02 19:49:38,573 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2023-12-02 19:49:38,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 19:49:38,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:49:38,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:49:38,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 19:49:38,575 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:49:38,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:49:38,575 INFO L85 PathProgramCache]: Analyzing trace with hash 571776287, now seen corresponding path program 1 times [2023-12-02 19:49:38,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:49:38,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316705365] [2023-12-02 19:49:38,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:38,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:49:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:49:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:49:38,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:49:38,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316705365] [2023-12-02 19:49:38,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316705365] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:49:38,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:49:38,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:49:38,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250047359] [2023-12-02 19:49:38,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:49:38,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:49:38,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:49:38,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:49:38,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:49:38,683 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-12-02 19:49:38,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:49:38,816 INFO L93 Difference]: Finished difference Result 133 states and 180 transitions. [2023-12-02 19:49:38,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:49:38,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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 16 [2023-12-02 19:49:38,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:49:38,819 INFO L225 Difference]: With dead ends: 133 [2023-12-02 19:49:38,819 INFO L226 Difference]: Without dead ends: 89 [2023-12-02 19:49:38,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:49:38,822 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 73 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:49:38,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 118 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:49:38,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-02 19:49:38,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2023-12-02 19:49:38,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 59 states have internal predecessors, (67), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (14), 9 states have call predecessors, (14), 13 states have call successors, (14) [2023-12-02 19:49:38,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2023-12-02 19:49:38,840 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 16 [2023-12-02 19:49:38,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:49:38,840 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2023-12-02 19:49:38,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-12-02 19:49:38,841 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2023-12-02 19:49:38,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 19:49:38,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:49:38,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:49:38,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 19:49:38,843 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:49:38,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:49:38,843 INFO L85 PathProgramCache]: Analyzing trace with hash -102655147, now seen corresponding path program 1 times [2023-12-02 19:49:38,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:49:38,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665166393] [2023-12-02 19:49:38,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:38,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:49:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:49:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:49:39,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:49:39,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665166393] [2023-12-02 19:49:39,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665166393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:49:39,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:49:39,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:49:39,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871556405] [2023-12-02 19:49:39,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:49:39,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:49:39,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:49:39,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:49:39,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:49:39,043 INFO L87 Difference]: Start difference. First operand 72 states and 94 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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) [2023-12-02 19:49:39,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:49:39,232 INFO L93 Difference]: Finished difference Result 238 states and 329 transitions. [2023-12-02 19:49:39,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 19:49:39,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 19 [2023-12-02 19:49:39,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:49:39,237 INFO L225 Difference]: With dead ends: 238 [2023-12-02 19:49:39,237 INFO L226 Difference]: Without dead ends: 168 [2023-12-02 19:49:39,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 19:49:39,240 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 76 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:49:39,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 234 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:49:39,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-12-02 19:49:39,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 143. [2023-12-02 19:49:39,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 101 states have (on average 1.3366336633663367) internal successors, (135), 116 states have internal predecessors, (135), 21 states have call successors, (21), 18 states have call predecessors, (21), 20 states have return successors, (26), 19 states have call predecessors, (26), 21 states have call successors, (26) [2023-12-02 19:49:39,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 182 transitions. [2023-12-02 19:49:39,268 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 182 transitions. Word has length 19 [2023-12-02 19:49:39,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:49:39,269 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 182 transitions. [2023-12-02 19:49:39,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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) [2023-12-02 19:49:39,269 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 182 transitions. [2023-12-02 19:49:39,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 19:49:39,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:49:39,271 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] [2023-12-02 19:49:39,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 19:49:39,272 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:49:39,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:49:39,272 INFO L85 PathProgramCache]: Analyzing trace with hash -700092463, now seen corresponding path program 1 times [2023-12-02 19:49:39,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:49:39,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63431977] [2023-12-02 19:49:39,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:39,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:49:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:49:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:49:39,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:49:39,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63431977] [2023-12-02 19:49:39,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63431977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:49:39,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:49:39,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 19:49:39,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809760197] [2023-12-02 19:49:39,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:49:39,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 19:49:39,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:49:39,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 19:49:39,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-02 19:49:39,446 INFO L87 Difference]: Start difference. First operand 143 states and 182 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:49:39,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:49:39,832 INFO L93 Difference]: Finished difference Result 373 states and 499 transitions. [2023-12-02 19:49:39,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 19:49:39,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-12-02 19:49:39,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:49:39,836 INFO L225 Difference]: With dead ends: 373 [2023-12-02 19:49:39,836 INFO L226 Difference]: Without dead ends: 303 [2023-12-02 19:49:39,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=92, Unknown=0, NotChecked=0, Total=156 [2023-12-02 19:49:39,838 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 209 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:49:39,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 204 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:49:39,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-12-02 19:49:39,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 269. [2023-12-02 19:49:39,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 193 states have (on average 1.305699481865285) internal successors, (252), 216 states have internal predecessors, (252), 37 states have call successors, (37), 34 states have call predecessors, (37), 38 states have return successors, (50), 37 states have call predecessors, (50), 37 states have call successors, (50) [2023-12-02 19:49:39,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 339 transitions. [2023-12-02 19:49:39,887 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 339 transitions. Word has length 22 [2023-12-02 19:49:39,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:49:39,888 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 339 transitions. [2023-12-02 19:49:39,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 19:49:39,888 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 339 transitions. [2023-12-02 19:49:39,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 19:49:39,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:49:39,891 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 19:49:39,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 19:49:39,892 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:49:39,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:49:39,892 INFO L85 PathProgramCache]: Analyzing trace with hash 761970324, now seen corresponding path program 1 times [2023-12-02 19:49:39,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:49:39,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600448021] [2023-12-02 19:49:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:39,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:49:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:49:40,433 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:49:40,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:49:40,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600448021] [2023-12-02 19:49:40,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600448021] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:49:40,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425876354] [2023-12-02 19:49:40,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:40,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:49:40,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:49:40,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:49:40,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 19:49:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:49:40,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-02 19:49:40,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:49:41,162 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:49:41,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:49:41,960 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:49:41,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425876354] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:49:41,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1197438747] [2023-12-02 19:49:41,981 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-12-02 19:49:41,981 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:49:41,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:49:41,990 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:49:41,990 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:49:46,917 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 138 for LOIs [2023-12-02 19:49:46,983 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 58 for LOIs [2023-12-02 19:49:47,274 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:49:52,042 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2401#(and (exists ((|v_ULTIMATE.start_test_~tmp___0~3#1_BEFORE_CALL_11| Int) (|v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_16| Int) (|v_ULTIMATE.start_main_~tmp~0#1_BEFORE_CALL_16| Int) (|v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_11| Int) (|v_ULTIMATE.start_test_~tmp~6#1_BEFORE_CALL_16| Int) (|v_ULTIMATE.start_valid_product_#res#1_BEFORE_CALL_16| Int)) (and (<= 0 (+ |v_ULTIMATE.start_test_~tmp~6#1_BEFORE_CALL_16| 2147483648)) (<= 1 |#StackHeapBarrier|) (= ~methaneLevelCritical~0 0) (<= 0 (+ |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_11| 2147483648)) (= |v_ULTIMATE.start_valid_product_#res#1_BEFORE_CALL_16| 1) (= ~head~0.offset 0) (= |v_ULTIMATE.start_test_~tmp___0~3#1_BEFORE_CALL_11| 0) (= |v_ULTIMATE.start_main_~tmp~0#1_BEFORE_CALL_16| 1) (= |v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_16| 0) (<= |v_ULTIMATE.start_test_~tmp~6#1_BEFORE_CALL_16| 2147483647) (<= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_11| 2147483647) (not (= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_11| 0)) (= ~head~0.base 0) (= ~cleanupTimeShifts~0 4))) (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| 0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (or (= |old(~waterLevel~0)| 1) (= |old(~waterLevel~0)| 0)) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_getWaterLevel_#res#1| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (= 0 ~systemActive~0) (= ~waterLevel~0 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)))' at error location [2023-12-02 19:49:52,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:49:52,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:49:52,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 14] total 34 [2023-12-02 19:49:52,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593342907] [2023-12-02 19:49:52,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:49:52,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-02 19:49:52,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:49:52,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-02 19:49:52,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=2803, Unknown=0, NotChecked=0, Total=3192 [2023-12-02 19:49:52,047 INFO L87 Difference]: Start difference. First operand 269 states and 339 transitions. Second operand has 35 states, 30 states have (on average 2.566666666666667) internal successors, (77), 27 states have internal predecessors, (77), 8 states have call successors, (12), 11 states have call predecessors, (12), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-12-02 19:49:54,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:49:54,537 INFO L93 Difference]: Finished difference Result 887 states and 1302 transitions. [2023-12-02 19:49:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-02 19:49:54,538 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 30 states have (on average 2.566666666666667) internal successors, (77), 27 states have internal predecessors, (77), 8 states have call successors, (12), 11 states have call predecessors, (12), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 39 [2023-12-02 19:49:54,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:49:54,545 INFO L225 Difference]: With dead ends: 887 [2023-12-02 19:49:54,545 INFO L226 Difference]: Without dead ends: 817 [2023-12-02 19:49:54,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4619 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=2096, Invalid=10336, Unknown=0, NotChecked=0, Total=12432 [2023-12-02 19:49:54,553 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 1276 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 854 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 854 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:49:54,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1283 Valid, 791 Invalid, 2031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [854 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 19:49:54,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2023-12-02 19:49:54,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 662. [2023-12-02 19:49:54,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 476 states have (on average 1.2920168067226891) internal successors, (615), 526 states have internal predecessors, (615), 87 states have call successors, (87), 81 states have call predecessors, (87), 98 states have return successors, (161), 93 states have call predecessors, (161), 87 states have call successors, (161) [2023-12-02 19:49:54,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 863 transitions. [2023-12-02 19:49:54,629 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 863 transitions. Word has length 39 [2023-12-02 19:49:54,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:49:54,629 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 863 transitions. [2023-12-02 19:49:54,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 30 states have (on average 2.566666666666667) internal successors, (77), 27 states have internal predecessors, (77), 8 states have call successors, (12), 11 states have call predecessors, (12), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-12-02 19:49:54,629 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 863 transitions. [2023-12-02 19:49:54,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 19:49:54,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:49:54,633 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] [2023-12-02 19:49:54,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:49:54,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 19:49:54,835 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:49:54,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:49:54,835 INFO L85 PathProgramCache]: Analyzing trace with hash -307166810, now seen corresponding path program 1 times [2023-12-02 19:49:54,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:49:54,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704093015] [2023-12-02 19:49:54,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:54,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:49:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:49:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 19:49:54,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:49:54,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704093015] [2023-12-02 19:49:54,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704093015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:49:54,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:49:54,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:49:54,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688705740] [2023-12-02 19:49:54,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:49:54,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:49:54,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:49:54,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:49:54,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:49:54,969 INFO L87 Difference]: Start difference. First operand 662 states and 863 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:49:55,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:49:55,078 INFO L93 Difference]: Finished difference Result 1087 states and 1464 transitions. [2023-12-02 19:49:55,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:49:55,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2023-12-02 19:49:55,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:49:55,084 INFO L225 Difference]: With dead ends: 1087 [2023-12-02 19:49:55,084 INFO L226 Difference]: Without dead ends: 728 [2023-12-02 19:49:55,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:49:55,086 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 51 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:49:55,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 137 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:49:55,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2023-12-02 19:49:55,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 672. [2023-12-02 19:49:55,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 484 states have (on average 1.2892561983471074) internal successors, (624), 534 states have internal predecessors, (624), 87 states have call successors, (87), 82 states have call predecessors, (87), 100 states have return successors, (165), 95 states have call predecessors, (165), 87 states have call successors, (165) [2023-12-02 19:49:55,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 876 transitions. [2023-12-02 19:49:55,136 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 876 transitions. Word has length 44 [2023-12-02 19:49:55,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:49:55,137 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 876 transitions. [2023-12-02 19:49:55,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:49:55,137 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 876 transitions. [2023-12-02 19:49:55,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 19:49:55,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:49:55,139 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 19:49:55,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 19:49:55,140 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:49:55,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:49:55,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1914037258, now seen corresponding path program 1 times [2023-12-02 19:49:55,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:49:55,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83568913] [2023-12-02 19:49:55,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:55,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:49:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:49:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 19:49:55,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:49:55,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83568913] [2023-12-02 19:49:55,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83568913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:49:55,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:49:55,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:49:55,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278908716] [2023-12-02 19:49:55,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:49:55,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:49:55,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:49:55,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:49:55,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:49:55,180 INFO L87 Difference]: Start difference. First operand 672 states and 876 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:49:55,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:49:55,293 INFO L93 Difference]: Finished difference Result 1311 states and 1707 transitions. [2023-12-02 19:49:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:49:55,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2023-12-02 19:49:55,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:49:55,298 INFO L225 Difference]: With dead ends: 1311 [2023-12-02 19:49:55,298 INFO L226 Difference]: Without dead ends: 454 [2023-12-02 19:49:55,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:49:55,301 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 84 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:49:55,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 112 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:49:55,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-12-02 19:49:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 410. [2023-12-02 19:49:55,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 289 states have (on average 1.221453287197232) internal successors, (353), 320 states have internal predecessors, (353), 53 states have call successors, (53), 50 states have call predecessors, (53), 67 states have return successors, (90), 60 states have call predecessors, (90), 53 states have call successors, (90) [2023-12-02 19:49:55,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 496 transitions. [2023-12-02 19:49:55,336 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 496 transitions. Word has length 49 [2023-12-02 19:49:55,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:49:55,336 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 496 transitions. [2023-12-02 19:49:55,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 19:49:55,337 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 496 transitions. [2023-12-02 19:49:55,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 19:49:55,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:49:55,338 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 19:49:55,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 19:49:55,338 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:49:55,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:49:55,339 INFO L85 PathProgramCache]: Analyzing trace with hash 55795776, now seen corresponding path program 1 times [2023-12-02 19:49:55,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:49:55,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284256867] [2023-12-02 19:49:55,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:55,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:49:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:49:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 19:49:55,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:49:55,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284256867] [2023-12-02 19:49:55,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284256867] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:49:55,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892246387] [2023-12-02 19:49:55,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:55,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:49:55,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:49:55,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:49:55,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 19:49:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:49:55,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:49:55,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:49:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:49:55,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:49:55,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892246387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:49:55,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:49:55,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 19:49:55,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226988365] [2023-12-02 19:49:55,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:49:55,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:49:55,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:49:55,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:49:55,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:49:55,508 INFO L87 Difference]: Start difference. First operand 410 states and 496 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:49:55,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:49:55,582 INFO L93 Difference]: Finished difference Result 831 states and 1054 transitions. [2023-12-02 19:49:55,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:49:55,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 46 [2023-12-02 19:49:55,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:49:55,586 INFO L225 Difference]: With dead ends: 831 [2023-12-02 19:49:55,586 INFO L226 Difference]: Without dead ends: 529 [2023-12-02 19:49:55,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:49:55,588 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 29 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:49:55,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 108 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:49:55,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2023-12-02 19:49:55,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 511. [2023-12-02 19:49:55,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 360 states have (on average 1.225) internal successors, (441), 397 states have internal predecessors, (441), 68 states have call successors, (68), 64 states have call predecessors, (68), 82 states have return successors, (114), 75 states have call predecessors, (114), 68 states have call successors, (114) [2023-12-02 19:49:55,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 623 transitions. [2023-12-02 19:49:55,622 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 623 transitions. Word has length 46 [2023-12-02 19:49:55,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:49:55,622 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 623 transitions. [2023-12-02 19:49:55,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 19:49:55,622 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 623 transitions. [2023-12-02 19:49:55,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 19:49:55,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:49:55,623 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 19:49:55,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 19:49:55,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 19:49:55,824 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:49:55,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:49:55,825 INFO L85 PathProgramCache]: Analyzing trace with hash 216809370, now seen corresponding path program 1 times [2023-12-02 19:49:55,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:49:55,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106907781] [2023-12-02 19:49:55,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:55,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:49:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:49:56,056 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:49:56,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:49:56,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106907781] [2023-12-02 19:49:56,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106907781] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:49:56,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966586593] [2023-12-02 19:49:56,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:56,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:49:56,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:49:56,058 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:49:56,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 19:49:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:49:56,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 19:49:56,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:49:56,396 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:49:56,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:49:56,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966586593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:49:56,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:49:56,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2023-12-02 19:49:56,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202888552] [2023-12-02 19:49:56,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:49:56,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 19:49:56,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:49:56,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 19:49:56,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-12-02 19:49:56,398 INFO L87 Difference]: Start difference. First operand 511 states and 623 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:49:56,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:49:56,882 INFO L93 Difference]: Finished difference Result 1134 states and 1422 transitions. [2023-12-02 19:49:56,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 19:49:56,883 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 49 [2023-12-02 19:49:56,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:49:56,889 INFO L225 Difference]: With dead ends: 1134 [2023-12-02 19:49:56,889 INFO L226 Difference]: Without dead ends: 718 [2023-12-02 19:49:56,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2023-12-02 19:49:56,892 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 147 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:49:56,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 298 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:49:56,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2023-12-02 19:49:56,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 646. [2023-12-02 19:49:56,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 461 states have (on average 1.229934924078091) internal successors, (567), 502 states have internal predecessors, (567), 89 states have call successors, (89), 84 states have call predecessors, (89), 95 states have return successors, (142), 89 states have call predecessors, (142), 89 states have call successors, (142) [2023-12-02 19:49:56,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 798 transitions. [2023-12-02 19:49:56,973 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 798 transitions. Word has length 49 [2023-12-02 19:49:56,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:49:56,973 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 798 transitions. [2023-12-02 19:49:56,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 19:49:56,974 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 798 transitions. [2023-12-02 19:49:56,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 19:49:56,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:49:56,976 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:49:56,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 19:49:57,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 19:49:57,177 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:49:57,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:49:57,177 INFO L85 PathProgramCache]: Analyzing trace with hash 217495317, now seen corresponding path program 1 times [2023-12-02 19:49:57,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:49:57,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317397440] [2023-12-02 19:49:57,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:57,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:49:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:49:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 32 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 19:49:57,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:49:57,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317397440] [2023-12-02 19:49:57,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317397440] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:49:57,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040124825] [2023-12-02 19:49:57,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:57,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:49:57,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:49:57,675 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:49:57,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 19:49:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:49:57,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 19:49:57,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:49:57,890 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 43 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:49:57,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:49:57,962 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 19:49:57,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040124825] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 19:49:57,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:49:57,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 6] total 18 [2023-12-02 19:49:57,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906084183] [2023-12-02 19:49:57,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:49:57,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:49:57,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:49:57,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:49:57,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-12-02 19:49:57,965 INFO L87 Difference]: Start difference. First operand 646 states and 798 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 19:49:58,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:49:58,135 INFO L93 Difference]: Finished difference Result 1254 states and 1579 transitions. [2023-12-02 19:49:58,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:49:58,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 77 [2023-12-02 19:49:58,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:49:58,141 INFO L225 Difference]: With dead ends: 1254 [2023-12-02 19:49:58,141 INFO L226 Difference]: Without dead ends: 666 [2023-12-02 19:49:58,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-12-02 19:49:58,144 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 92 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:49:58,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 192 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:49:58,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-12-02 19:49:58,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 552. [2023-12-02 19:49:58,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 402 states have (on average 1.2412935323383085) internal successors, (499), 433 states have internal predecessors, (499), 73 states have call successors, (73), 71 states have call predecessors, (73), 76 states have return successors, (108), 74 states have call predecessors, (108), 73 states have call successors, (108) [2023-12-02 19:49:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 680 transitions. [2023-12-02 19:49:58,213 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 680 transitions. Word has length 77 [2023-12-02 19:49:58,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:49:58,214 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 680 transitions. [2023-12-02 19:49:58,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-02 19:49:58,214 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 680 transitions. [2023-12-02 19:49:58,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-02 19:49:58,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:49:58,216 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 19:49:58,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 19:49:58,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 19:49:58,422 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 19:49:58,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:49:58,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1942986322, now seen corresponding path program 1 times [2023-12-02 19:49:58,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 19:49:58,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447463851] [2023-12-02 19:49:58,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:58,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 19:49:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:49:59,275 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 44 proven. 49 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 19:49:59,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:49:59,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447463851] [2023-12-02 19:49:59,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447463851] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:49:59,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137308952] [2023-12-02 19:49:59,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:49:59,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:49:59,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:49:59,277 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:49:59,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 19:49:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:49:59,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-02 19:49:59,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:49:59,689 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:49:59,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:49:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 53 proven. 5 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-02 19:49:59,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137308952] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:49:59,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [46374036] [2023-12-02 19:49:59,930 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2023-12-02 19:49:59,930 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:49:59,931 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:49:59,931 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:49:59,931 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:50:05,310 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 39 for LOIs [2023-12-02 19:50:05,317 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 18 for LOIs [2023-12-02 19:50:05,498 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 28 for LOIs [2023-12-02 19:50:05,536 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 20 for LOIs [2023-12-02 19:50:05,538 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 23 for LOIs [2023-12-02 19:50:05,540 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:50:07,771 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16788#(and (= |timeShift___utac_acc__Specification4_spec__1_~tmp~1#1| 0) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_getWaterLevel_#res#1| 0) (or (and (exists ((|v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_22| Int)) (and (not (= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_22| 0)) (<= 0 (+ |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_22| 2147483648)) (<= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_22| 2147483647))) (= |old(~pumpRunning~0)| 0) (= |old(~waterLevel~0)| 0) (not (= 0 ~systemActive~0))) (and (<= 0 |timeShift_isLowWaterSensorDry_#res#1|) (<= |timeShift_isLowWaterSensorDry_#res#1| 1) (<= |timeShift_isLowWaterLevel_#res#1| 1) (<= 0 |timeShift_isLowWaterLevel_#res#1|))) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (= ~waterLevel~0 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)))' at error location [2023-12-02 19:50:07,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:50:07,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 19:50:07,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 7] total 33 [2023-12-02 19:50:07,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368002739] [2023-12-02 19:50:07,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 19:50:07,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 19:50:07,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:50:07,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 19:50:07,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=3581, Unknown=0, NotChecked=0, Total=3906 [2023-12-02 19:50:07,775 INFO L87 Difference]: Start difference. First operand 552 states and 680 transitions. Second operand has 33 states, 31 states have (on average 5.516129032258065) internal successors, (171), 31 states have internal predecessors, (171), 14 states have call successors, (23), 9 states have call predecessors, (23), 13 states have return successors, (24), 14 states have call predecessors, (24), 12 states have call successors, (24) [2023-12-02 19:50:08,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:50:08,589 INFO L93 Difference]: Finished difference Result 654 states and 802 transitions. [2023-12-02 19:50:08,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-02 19:50:08,589 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 5.516129032258065) internal successors, (171), 31 states have internal predecessors, (171), 14 states have call successors, (23), 9 states have call predecessors, (23), 13 states have return successors, (24), 14 states have call predecessors, (24), 12 states have call successors, (24) Word has length 94 [2023-12-02 19:50:08,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:50:08,590 INFO L225 Difference]: With dead ends: 654 [2023-12-02 19:50:08,590 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 19:50:08,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 245 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=725, Invalid=5917, Unknown=0, NotChecked=0, Total=6642 [2023-12-02 19:50:08,595 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 268 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:50:08,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 426 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:50:08,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 19:50:08,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 19:50:08,596 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) [2023-12-02 19:50:08,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 19:50:08,596 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 94 [2023-12-02 19:50:08,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:50:08,596 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 19:50:08,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 5.516129032258065) internal successors, (171), 31 states have internal predecessors, (171), 14 states have call successors, (23), 9 states have call predecessors, (23), 13 states have return successors, (24), 14 states have call predecessors, (24), 12 states have call successors, (24) [2023-12-02 19:50:08,597 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 19:50:08,597 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 19:50:08,599 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 19:50:08,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-02 19:50:08,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 19:50:08,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 19:50:10,357 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 423 430) no Hoare annotation was computed. [2023-12-02 19:50:10,357 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 423 430) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~waterLevel~0 0) (< ~waterLevel~0 0)) [2023-12-02 19:50:10,358 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 356 362) no Hoare annotation was computed. [2023-12-02 19:50:10,358 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 356 362) the Hoare annotation is: true [2023-12-02 19:50:10,358 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 214 225) the Hoare annotation is: true [2023-12-02 19:50:10,358 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 214 225) no Hoare annotation was computed. [2023-12-02 19:50:10,358 INFO L895 garLoopResultBuilder]: At program point L404(line 404) the Hoare annotation is: (let ((.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 (< |old(~waterLevel~0)| 0) (= |old(~waterLevel~0)| 0) (not (= 0 ~systemActive~0))) (or .cse1 (not (= |old(~pumpRunning~0)| 1)) .cse2) (or .cse0 .cse1 .cse2) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1))) [2023-12-02 19:50:10,358 INFO L895 garLoopResultBuilder]: At program point L400(line 400) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (= |old(~waterLevel~0)| 2)))) (and (or .cse0 (< |old(~waterLevel~0)| 0) (= |old(~waterLevel~0)| 0) (not (= 0 ~systemActive~0))) (or .cse0 .cse1 .cse2) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1) (or .cse1 (not (= |old(~pumpRunning~0)| 1)) (and (= ~waterLevel~0 1) (= ~pumpRunning~0 1) (not (= |timeShift_processEnvironment_~tmp~3#1| 0))) .cse2))) [2023-12-02 19:50:10,358 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 175) no Hoare annotation was computed. [2023-12-02 19:50:10,358 INFO L899 garLoopResultBuilder]: For program point L165(lines 165 178) no Hoare annotation was computed. [2023-12-02 19:50:10,358 INFO L899 garLoopResultBuilder]: For program point L165-1(lines 157 181) no Hoare annotation was computed. [2023-12-02 19:50:10,359 INFO L895 garLoopResultBuilder]: At program point L409(line 409) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse3 (= ~pumpRunning~0 0)) (.cse2 (not (= |old(~waterLevel~0)| 2)))) (and (or .cse0 (< |old(~waterLevel~0)| 0) (= |old(~waterLevel~0)| 0) (not (= 0 ~systemActive~0))) (or .cse1 (not (= |old(~pumpRunning~0)| 1)) .cse2) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 (and .cse3 (= ~waterLevel~0 1))) (or .cse0 .cse1 (and .cse3 (= 2 ~waterLevel~0)) .cse2))) [2023-12-02 19:50:10,359 INFO L899 garLoopResultBuilder]: For program point L409-1(lines 390 414) no Hoare annotation was computed. [2023-12-02 19:50:10,359 INFO L899 garLoopResultBuilder]: For program point L343-1(lines 343 349) no Hoare annotation was computed. [2023-12-02 19:50:10,359 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 332 355) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (= ~pumpRunning~0 0)) (.cse1 (not (= 1 ~systemActive~0))) (.cse4 (not (= |old(~waterLevel~0)| 2))) (.cse3 (= 2 ~waterLevel~0))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 (and .cse2 (= ~waterLevel~0 1))) (or .cse0 .cse1 (and .cse2 .cse3) .cse4) (or .cse0 (and .cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (< |old(~waterLevel~0)| 0) (= |old(~waterLevel~0)| 0) (not (= 0 ~systemActive~0))) (or .cse1 (not (= |old(~pumpRunning~0)| 1)) .cse4 (and .cse3 (= ~pumpRunning~0 1))))) [2023-12-02 19:50:10,359 INFO L899 garLoopResultBuilder]: For program point L612(line 612) no Hoare annotation was computed. [2023-12-02 19:50:10,359 INFO L899 garLoopResultBuilder]: For program point L336-1(lines 335 354) no Hoare annotation was computed. [2023-12-02 19:50:10,359 INFO L899 garLoopResultBuilder]: For program point L398(lines 398 406) no Hoare annotation was computed. [2023-12-02 19:50:10,359 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 332 355) no Hoare annotation was computed. [2023-12-02 19:50:10,359 INFO L899 garLoopResultBuilder]: For program point L394(lines 394 411) no Hoare annotation was computed. [2023-12-02 19:50:10,360 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 612) no Hoare annotation was computed. [2023-12-02 19:50:10,360 INFO L902 garLoopResultBuilder]: At program point L66-1(lines 66 70) the Hoare annotation is: true [2023-12-02 19:50:10,360 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 52 81) no Hoare annotation was computed. [2023-12-02 19:50:10,360 INFO L902 garLoopResultBuilder]: At program point L62-2(lines 62 76) the Hoare annotation is: true [2023-12-02 19:50:10,360 INFO L902 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: true [2023-12-02 19:50:10,360 INFO L899 garLoopResultBuilder]: For program point L58-1(line 58) no Hoare annotation was computed. [2023-12-02 19:50:10,360 INFO L899 garLoopResultBuilder]: For program point L77(lines 52 81) no Hoare annotation was computed. [2023-12-02 19:50:10,360 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 52 81) the Hoare annotation is: true [2023-12-02 19:50:10,360 INFO L899 garLoopResultBuilder]: For program point L73(line 73) no Hoare annotation was computed. [2023-12-02 19:50:10,360 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 70) no Hoare annotation was computed. [2023-12-02 19:50:10,360 INFO L895 garLoopResultBuilder]: At program point L531(line 531) the Hoare annotation is: (and (not (= ~waterLevel~0 0)) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (<= 0 ~waterLevel~0)) [2023-12-02 19:50:10,361 INFO L899 garLoopResultBuilder]: For program point L552(lines 551 598) no Hoare annotation was computed. [2023-12-02 19:50:10,361 INFO L899 garLoopResultBuilder]: For program point L581(lines 581 594) no Hoare annotation was computed. [2023-12-02 19:50:10,361 INFO L895 garLoopResultBuilder]: At program point L573(line 573) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse3 (= 2 ~waterLevel~0)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 (= ~waterLevel~0 1)) (and .cse0 .cse3 .cse1 .cse2) (and .cse0 (not (= ~waterLevel~0 0)) .cse2 (= 0 ~systemActive~0) (<= 0 ~waterLevel~0)) (and .cse3 .cse1 .cse2 (= ~pumpRunning~0 1)))) [2023-12-02 19:50:10,361 INFO L899 garLoopResultBuilder]: For program point L602(lines 541 606) no Hoare annotation was computed. [2023-12-02 19:50:10,361 INFO L899 garLoopResultBuilder]: For program point L561(lines 561 567) no Hoare annotation was computed. [2023-12-02 19:50:10,361 INFO L899 garLoopResultBuilder]: For program point L561-1(lines 561 567) no Hoare annotation was computed. [2023-12-02 19:50:10,361 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 147) no Hoare annotation was computed. [2023-12-02 19:50:10,361 INFO L899 garLoopResultBuilder]: For program point L140-2(lines 140 147) no Hoare annotation was computed. [2023-12-02 19:50:10,361 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 19:50:10,361 INFO L895 garLoopResultBuilder]: At program point L599(lines 550 600) the Hoare annotation is: false [2023-12-02 19:50:10,361 INFO L899 garLoopResultBuilder]: For program point L529(lines 529 535) no Hoare annotation was computed. [2023-12-02 19:50:10,362 INFO L899 garLoopResultBuilder]: For program point L529-1(lines 529 535) no Hoare annotation was computed. [2023-12-02 19:50:10,362 INFO L899 garLoopResultBuilder]: For program point L587(lines 587 593) no Hoare annotation was computed. [2023-12-02 19:50:10,362 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 19:50:10,362 INFO L895 garLoopResultBuilder]: At program point L587-2(lines 581 594) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse3 (= 2 ~waterLevel~0)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 (= ~waterLevel~0 1)) (and .cse0 .cse3 .cse1 .cse2) (and .cse0 (not (= ~waterLevel~0 0)) .cse2 (= 0 ~systemActive~0) (<= 0 ~waterLevel~0)) (and .cse3 .cse1 .cse2 (= ~pumpRunning~0 1)))) [2023-12-02 19:50:10,362 INFO L899 garLoopResultBuilder]: For program point L571(lines 571 577) no Hoare annotation was computed. [2023-12-02 19:50:10,362 INFO L899 garLoopResultBuilder]: For program point L571-1(lines 571 577) no Hoare annotation was computed. [2023-12-02 19:50:10,362 INFO L895 garLoopResultBuilder]: At program point L596(lines 551 598) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 (= ~waterLevel~0 1)) (and .cse0 (not (= ~waterLevel~0 0)) .cse2 (= 0 ~systemActive~0) (<= 0 ~waterLevel~0)) (and (= 2 ~waterLevel~0) .cse1 .cse2 (= ~pumpRunning~0 1)))) [2023-12-02 19:50:10,362 INFO L895 garLoopResultBuilder]: At program point L563(line 563) the Hoare annotation is: (let ((.cse3 (= ~waterLevel~0 1)) (.cse0 (= ~pumpRunning~0 0)) (.cse2 (= 0 ~systemActive~0)) (.cse4 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse1 .cse3) (and .cse0 (<= 2 ~waterLevel~0) .cse1 .cse2) (and (= 2 ~waterLevel~0) .cse4 .cse1 (= ~pumpRunning~0 1)))) [2023-12-02 19:50:10,362 INFO L895 garLoopResultBuilder]: At program point L378(line 378) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~2#1| 0))))) [2023-12-02 19:50:10,362 INFO L899 garLoopResultBuilder]: For program point L372(lines 372 380) no Hoare annotation was computed. [2023-12-02 19:50:10,363 INFO L899 garLoopResultBuilder]: For program point L368(lines 368 385) no Hoare annotation was computed. [2023-12-02 19:50:10,363 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 364 388) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0))))) [2023-12-02 19:50:10,363 INFO L895 garLoopResultBuilder]: At program point L383(line 383) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0))) (or .cse0 .cse1 (< 1 ~waterLevel~0) (= ~waterLevel~0 0) (< ~waterLevel~0 0)))) [2023-12-02 19:50:10,363 INFO L899 garLoopResultBuilder]: For program point L383-1(lines 364 388) no Hoare annotation was computed. [2023-12-02 19:50:10,363 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 364 388) no Hoare annotation was computed. [2023-12-02 19:50:10,363 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 202 213) no Hoare annotation was computed. [2023-12-02 19:50:10,363 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 202 213) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 (= |old(~waterLevel~0)| ~waterLevel~0) (< |old(~waterLevel~0)| 0) (= |old(~waterLevel~0)| 0) (not (= 0 ~systemActive~0))) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 (= ~waterLevel~0 1)) (or (= 2 ~waterLevel~0) .cse1 (not (= ~pumpRunning~0 1)) (not (= |old(~waterLevel~0)| 2))))) [2023-12-02 19:50:10,365 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:50:10,367 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 19:50:10,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:50:10 BoogieIcfgContainer [2023-12-02 19:50:10,378 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 19:50:10,379 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 19:50:10,379 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 19:50:10,379 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 19:50:10,380 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:49:37" (3/4) ... [2023-12-02 19:50:10,381 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 19:50:10,383 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2023-12-02 19:50:10,383 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-12-02 19:50:10,383 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-12-02 19:50:10,383 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-12-02 19:50:10,383 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-12-02 19:50:10,384 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 19:50:10,384 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-12-02 19:50:10,391 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2023-12-02 19:50:10,392 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-12-02 19:50:10,392 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 19:50:10,393 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 19:50:10,393 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 19:50:10,418 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || !((1 == systemActive))) || ((pumpRunning == 0) && (waterLevel == 1))) && (((!((\old(pumpRunning) == 0)) || !((1 == systemActive))) || ((pumpRunning == 0) && (2 == waterLevel))) || !((\old(waterLevel) == 2)))) && ((((!((\old(pumpRunning) == 0)) || ((pumpRunning == 0) && (\old(waterLevel) == waterLevel))) || (\old(waterLevel) < 0)) || (\old(waterLevel) == 0)) || !((0 == systemActive)))) && (((!((1 == systemActive)) || !((\old(pumpRunning) == 1))) || !((\old(waterLevel) == 2))) || ((2 == waterLevel) && (pumpRunning == 1)))) [2023-12-02 19:50:10,450 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || !((1 == systemActive))) || ((pumpRunning == 0) && (waterLevel == 1))) && (((!((\old(pumpRunning) == 0)) || !((1 == systemActive))) || ((pumpRunning == 0) && (2 == waterLevel))) || !((\old(waterLevel) == 2)))) && ((((!((\old(pumpRunning) == 0)) || ((pumpRunning == 0) && (\old(waterLevel) == waterLevel))) || (\old(waterLevel) < 0)) || (\old(waterLevel) == 0)) || !((0 == systemActive)))) && (((!((1 == systemActive)) || !((\old(pumpRunning) == 1))) || !((\old(waterLevel) == 2))) || ((2 == waterLevel) && (pumpRunning == 1)))) [2023-12-02 19:50:10,490 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 19:50:10,491 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 19:50:10,491 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 19:50:10,492 INFO L158 Benchmark]: Toolchain (without parser) took 33484.03ms. Allocated memory was 153.1MB in the beginning and 782.2MB in the end (delta: 629.1MB). Free memory was 120.9MB in the beginning and 454.4MB in the end (delta: -333.6MB). Peak memory consumption was 297.6MB. Max. memory is 16.1GB. [2023-12-02 19:50:10,492 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory is still 95.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:50:10,493 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.34ms. Allocated memory is still 153.1MB. Free memory was 120.9MB in the beginning and 101.5MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 19:50:10,493 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.76ms. Allocated memory is still 153.1MB. Free memory was 101.5MB in the beginning and 98.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:50:10,493 INFO L158 Benchmark]: Boogie Preprocessor took 28.69ms. Allocated memory is still 153.1MB. Free memory was 98.9MB in the beginning and 97.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 19:50:10,494 INFO L158 Benchmark]: RCFGBuilder took 505.17ms. Allocated memory is still 153.1MB. Free memory was 97.3MB in the beginning and 71.2MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-12-02 19:50:10,494 INFO L158 Benchmark]: TraceAbstraction took 32379.76ms. Allocated memory was 153.1MB in the beginning and 782.2MB in the end (delta: 629.1MB). Free memory was 70.7MB in the beginning and 461.8MB in the end (delta: -391.1MB). Peak memory consumption was 427.7MB. Max. memory is 16.1GB. [2023-12-02 19:50:10,494 INFO L158 Benchmark]: Witness Printer took 112.24ms. Allocated memory is still 782.2MB. Free memory was 461.8MB in the beginning and 454.4MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 19:50:10,496 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory is still 95.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 413.34ms. Allocated memory is still 153.1MB. Free memory was 120.9MB in the beginning and 101.5MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.76ms. Allocated memory is still 153.1MB. Free memory was 101.5MB in the beginning and 98.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.69ms. Allocated memory is still 153.1MB. Free memory was 98.9MB in the beginning and 97.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 505.17ms. Allocated memory is still 153.1MB. Free memory was 97.3MB in the beginning and 71.2MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 32379.76ms. Allocated memory was 153.1MB in the beginning and 782.2MB in the end (delta: 629.1MB). Free memory was 70.7MB in the beginning and 461.8MB in the end (delta: -391.1MB). Peak memory consumption was 427.7MB. Max. memory is 16.1GB. * Witness Printer took 112.24ms. Allocated memory is still 782.2MB. Free memory was 461.8MB in the beginning and 454.4MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [49] - GenericResultAtLocation [Line: 153]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [153] - GenericResultAtLocation [Line: 182]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [182] - GenericResultAtLocation [Line: 290]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [290] - GenericResultAtLocation [Line: 325]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [325] - GenericResultAtLocation [Line: 540]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [540] - GenericResultAtLocation [Line: 607]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [607] - GenericResultAtLocation [Line: 616]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [616] * 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: 612]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 32.3s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2350 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2319 mSDsluCounter, 2755 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2074 mSDsCounter, 1234 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2877 IncrementalHoareTripleChecker+Invalid, 4111 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1234 mSolverCounterUnsat, 681 mSDtfsCounter, 2877 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 842 GetRequests, 578 SyntacticMatches, 6 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7073 ImplicationChecksByTransitivity, 10.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=672occurred in iteration=7, InterpolantAutomatonStates: 146, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 535 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 979 PreInvPairs, 1029 NumberOfFragments, 662 HoareAnnotationTreeSize, 979 FomulaSimplifications, 69914 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 21 FomulaSimplificationsInter, 5914 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 785 NumberOfCodeBlocks, 785 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 975 ConstructedInterpolants, 0 QuantifiedInterpolants, 3912 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1230 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 20 InterpolantComputations, 10 PerfectInterpolantSequences, 444/653 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: 550]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 551]: Loop Invariant Derived loop invariant: ((((((pumpRunning == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1)) || (((((pumpRunning == 0) && !((waterLevel == 0))) && (splverifierCounter == 0)) && (0 == systemActive)) && (0 <= waterLevel))) || ((((2 == waterLevel) && (1 == systemActive)) && (splverifierCounter == 0)) && (pumpRunning == 1))) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 332]: Loop Invariant Derived loop invariant: ((((((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || !((1 == systemActive))) || ((pumpRunning == 0) && (waterLevel == 1))) && (((!((\old(pumpRunning) == 0)) || !((1 == systemActive))) || ((pumpRunning == 0) && (2 == waterLevel))) || !((\old(waterLevel) == 2)))) && ((((!((\old(pumpRunning) == 0)) || ((pumpRunning == 0) && (\old(waterLevel) == waterLevel))) || (\old(waterLevel) < 0)) || (\old(waterLevel) == 0)) || !((0 == systemActive)))) && (((!((1 == systemActive)) || !((\old(pumpRunning) == 1))) || !((\old(waterLevel) == 2))) || ((2 == waterLevel) && (pumpRunning == 1)))) RESULT: Ultimate proved your program to be correct! [2023-12-02 19:50:10,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fb4b82c-838c-4b33-95f2-b2b9896355c0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE