./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_e9750592-6f50-4a45-a4d3-6965387d1bb4/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9750592-6f50-4a45-a4d3-6965387d1bb4/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9750592-6f50-4a45-a4d3-6965387d1bb4/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9750592-6f50-4a45-a4d3-6965387d1bb4/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9750592-6f50-4a45-a4d3-6965387d1bb4/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9750592-6f50-4a45-a4d3-6965387d1bb4/bin/utaipan-verify-YMUCfTKeje --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 b1a2a4f6154f8b607411cb85c1a9c20d409d0ca16407a9f3bb2fc8f7ede01236 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:31:05,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:31:05,740 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9750592-6f50-4a45-a4d3-6965387d1bb4/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 04:31:05,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:31:05,750 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:31:05,787 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:31:05,787 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:31:05,788 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:31:05,788 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:31:05,789 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:31:05,789 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:31:05,790 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:31:05,791 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:31:05,795 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:31:05,796 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:31:05,796 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:31:05,796 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:31:05,797 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:31:05,797 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:31:05,797 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:31:05,798 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:31:05,798 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:31:05,801 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:31:05,802 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:31:05,802 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:31:05,802 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:31:05,803 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:31:05,803 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:31:05,803 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:31:05,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:31:05,805 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:31:05,805 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:31:05,805 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:31:05,806 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:31:05,806 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:31:05,807 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:31:05,807 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:31:05,808 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:31:05,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:31:05,808 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:31:05,809 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:31:05,809 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:31:05,809 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:31:05,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:31:05,810 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:31:05,810 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:31:05,811 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:31:05,811 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_e9750592-6f50-4a45-a4d3-6965387d1bb4/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9750592-6f50-4a45-a4d3-6965387d1bb4/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1a2a4f6154f8b607411cb85c1a9c20d409d0ca16407a9f3bb2fc8f7ede01236 [2024-11-09 04:31:06,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:31:06,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:31:06,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:31:06,159 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:31:06,160 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:31:06,161 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9750592-6f50-4a45-a4d3-6965387d1bb4/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c Unable to find full path for "g++" [2024-11-09 04:31:08,237 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:31:08,455 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:31:08,459 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9750592-6f50-4a45-a4d3-6965387d1bb4/sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c [2024-11-09 04:31:08,478 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9750592-6f50-4a45-a4d3-6965387d1bb4/bin/utaipan-verify-YMUCfTKeje/data/15d36bc6a/0165fb04f7484d9287eeb136f8f37663/FLAG5969fa4f4 [2024-11-09 04:31:08,492 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9750592-6f50-4a45-a4d3-6965387d1bb4/bin/utaipan-verify-YMUCfTKeje/data/15d36bc6a/0165fb04f7484d9287eeb136f8f37663 [2024-11-09 04:31:08,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:31:08,496 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:31:08,497 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:31:08,497 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:31:08,503 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:31:08,504 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:31:08" (1/1) ... [2024-11-09 04:31:08,505 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@663855a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:08, skipping insertion in model container [2024-11-09 04:31:08,505 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:31:08" (1/1) ... [2024-11-09 04:31:08,558 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:31:08,886 WARN L250 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_e9750592-6f50-4a45-a4d3-6965387d1bb4/sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c[12584,12597] [2024-11-09 04:31:08,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:31:08,936 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:31:08,944 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [49] [2024-11-09 04:31:08,945 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [153] [2024-11-09 04:31:08,946 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [519] [2024-11-09 04:31:08,946 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [528] [2024-11-09 04:31:08,946 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [627] [2024-11-09 04:31:08,946 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [695] [2024-11-09 04:31:08,946 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [859] [2024-11-09 04:31:08,947 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [885] [2024-11-09 04:31:09,005 WARN L250 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_e9750592-6f50-4a45-a4d3-6965387d1bb4/sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c[12584,12597] [2024-11-09 04:31:09,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:31:09,042 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:31:09,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:09 WrapperNode [2024-11-09 04:31:09,043 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:31:09,044 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:31:09,044 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:31:09,044 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:31:09,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:09" (1/1) ... [2024-11-09 04:31:09,065 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:09" (1/1) ... [2024-11-09 04:31:09,095 INFO L138 Inliner]: procedures = 53, calls = 94, calls flagged for inlining = 20, calls inlined = 17, statements flattened = 166 [2024-11-09 04:31:09,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:31:09,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:31:09,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:31:09,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:31:09,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:09" (1/1) ... [2024-11-09 04:31:09,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:09" (1/1) ... [2024-11-09 04:31:09,105 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:09" (1/1) ... [2024-11-09 04:31:09,106 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:09" (1/1) ... [2024-11-09 04:31:09,111 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:09" (1/1) ... [2024-11-09 04:31:09,115 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:09" (1/1) ... [2024-11-09 04:31:09,116 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:09" (1/1) ... [2024-11-09 04:31:09,117 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:09" (1/1) ... [2024-11-09 04:31:09,120 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:31:09,121 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:31:09,121 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:31:09,121 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:31:09,122 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:09" (1/1) ... [2024-11-09 04:31:09,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:31:09,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9750592-6f50-4a45-a4d3-6965387d1bb4/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:31:09,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9750592-6f50-4a45-a4d3-6965387d1bb4/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:31:09,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9750592-6f50-4a45-a4d3-6965387d1bb4/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:31:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:31:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-09 04:31:09,210 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-09 04:31:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2024-11-09 04:31:09,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2024-11-09 04:31:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-09 04:31:09,211 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-09 04:31:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-09 04:31:09,211 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-09 04:31:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-09 04:31:09,211 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-09 04:31:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:31:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-09 04:31:09,212 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-09 04:31:09,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:31:09,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:31:09,296 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:31:09,299 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:31:09,582 INFO L? ?]: Removed 36 outVars from TransFormulas that were not future-live. [2024-11-09 04:31:09,583 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:31:09,743 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:31:09,744 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 04:31:09,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:31:09 BoogieIcfgContainer [2024-11-09 04:31:09,744 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:31:09,747 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:31:09,747 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:31:09,751 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:31:09,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:31:08" (1/3) ... [2024-11-09 04:31:09,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5310f492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:31:09, skipping insertion in model container [2024-11-09 04:31:09,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:31:09" (2/3) ... [2024-11-09 04:31:09,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5310f492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:31:09, skipping insertion in model container [2024-11-09 04:31:09,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:31:09" (3/3) ... [2024-11-09 04:31:09,755 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2024-11-09 04:31:09,773 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:31:09,774 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 04:31:09,838 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:31:09,847 INFO L333 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, 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;@9c09c55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:31:09,847 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 04:31:09,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 37 states have internal predecessors, (44), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 04:31:09,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 04:31:09,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:09,871 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:09,872 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:09,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:09,878 INFO L85 PathProgramCache]: Analyzing trace with hash 895976983, now seen corresponding path program 1 times [2024-11-09 04:31:09,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:09,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69965965] [2024-11-09 04:31:09,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:09,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:10,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:10,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69965965] [2024-11-09 04:31:10,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69965965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:10,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:10,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:31:10,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852800131] [2024-11-09 04:31:10,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:10,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 04:31:10,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:10,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 04:31:10,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 04:31:10,139 INFO L87 Difference]: Start difference. First operand has 48 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 37 states have internal predecessors, (44), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 04:31:10,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:10,206 INFO L93 Difference]: Finished difference Result 94 states and 125 transitions. [2024-11-09 04:31:10,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 04:31:10,210 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-09 04:31:10,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:10,222 INFO L225 Difference]: With dead ends: 94 [2024-11-09 04:31:10,223 INFO L226 Difference]: Without dead ends: 43 [2024-11-09 04:31:10,228 INFO L431 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 [2024-11-09 04:31:10,235 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:10,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:31:10,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-09 04:31:10,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-09 04:31:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 33 states have internal predecessors, (36), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 04:31:10,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2024-11-09 04:31:10,283 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 16 [2024-11-09 04:31:10,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:10,284 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2024-11-09 04:31:10,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 04:31:10,285 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2024-11-09 04:31:10,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 04:31:10,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:10,287 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:10,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:31:10,288 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:10,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:10,289 INFO L85 PathProgramCache]: Analyzing trace with hash 617281375, now seen corresponding path program 1 times [2024-11-09 04:31:10,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:10,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513584452] [2024-11-09 04:31:10,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:10,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:10,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:10,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513584452] [2024-11-09 04:31:10,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513584452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:10,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:10,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:31:10,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811727334] [2024-11-09 04:31:10,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:10,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:31:10,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:10,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:31:10,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:31:10,448 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 04:31:10,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:10,514 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2024-11-09 04:31:10,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:31:10,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-09 04:31:10,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:10,516 INFO L225 Difference]: With dead ends: 63 [2024-11-09 04:31:10,516 INFO L226 Difference]: Without dead ends: 35 [2024-11-09 04:31:10,516 INFO L431 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 [2024-11-09 04:31:10,519 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:10,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 51 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:31:10,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-09 04:31:10,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-09 04:31:10,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 28 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 04:31:10,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2024-11-09 04:31:10,532 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 17 [2024-11-09 04:31:10,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:10,532 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2024-11-09 04:31:10,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 04:31:10,533 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2024-11-09 04:31:10,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 04:31:10,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:10,534 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:10,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 04:31:10,534 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:10,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:10,535 INFO L85 PathProgramCache]: Analyzing trace with hash 751205045, now seen corresponding path program 1 times [2024-11-09 04:31:10,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:10,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250671442] [2024-11-09 04:31:10,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:10,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:10,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:10,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250671442] [2024-11-09 04:31:10,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250671442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:10,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:10,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:31:10,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064896676] [2024-11-09 04:31:10,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:10,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:31:10,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:10,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:31:10,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:31:10,731 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 04:31:10,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:10,916 INFO L93 Difference]: Finished difference Result 96 states and 118 transitions. [2024-11-09 04:31:10,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:31:10,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-09 04:31:10,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:10,918 INFO L225 Difference]: With dead ends: 96 [2024-11-09 04:31:10,919 INFO L226 Difference]: Without dead ends: 63 [2024-11-09 04:31:10,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:31:10,920 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 23 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:10,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 84 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:31:10,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-09 04:31:10,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-09 04:31:10,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 48 states have internal predecessors, (53), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-09 04:31:10,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2024-11-09 04:31:10,948 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 19 [2024-11-09 04:31:10,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:10,948 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2024-11-09 04:31:10,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 04:31:10,949 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2024-11-09 04:31:10,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 04:31:10,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:10,950 INFO L215 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] [2024-11-09 04:31:10,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 04:31:10,951 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:10,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:10,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1790422832, now seen corresponding path program 1 times [2024-11-09 04:31:10,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:10,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258789879] [2024-11-09 04:31:10,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:10,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:11,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:11,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:11,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258789879] [2024-11-09 04:31:11,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258789879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:11,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:11,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:31:11,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079271789] [2024-11-09 04:31:11,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:11,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:31:11,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:11,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:31:11,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:31:11,268 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2024-11-09 04:31:11,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:11,400 INFO L93 Difference]: Finished difference Result 153 states and 184 transitions. [2024-11-09 04:31:11,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:31:11,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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 [2024-11-09 04:31:11,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:11,406 INFO L225 Difference]: With dead ends: 153 [2024-11-09 04:31:11,406 INFO L226 Difference]: Without dead ends: 92 [2024-11-09 04:31:11,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:31:11,408 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 24 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:11,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 115 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:31:11,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-09 04:31:11,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2024-11-09 04:31:11,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 68 states have internal predecessors, (76), 14 states have call successors, (14), 14 states have call predecessors, (14), 14 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2024-11-09 04:31:11,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2024-11-09 04:31:11,433 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 22 [2024-11-09 04:31:11,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:11,434 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2024-11-09 04:31:11,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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) [2024-11-09 04:31:11,434 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2024-11-09 04:31:11,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 04:31:11,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:11,438 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:11,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 04:31:11,439 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:11,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:11,440 INFO L85 PathProgramCache]: Analyzing trace with hash 691296789, now seen corresponding path program 1 times [2024-11-09 04:31:11,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:11,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768252491] [2024-11-09 04:31:11,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:11,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:31:11,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:31:11,614 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:31:11,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768252491] [2024-11-09 04:31:11,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768252491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:31:11,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:31:11,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:31:11,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501721502] [2024-11-09 04:31:11,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:31:11,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:31:11,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:31:11,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:31:11,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:31:11,618 INFO L87 Difference]: Start difference. First operand 90 states and 106 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 04:31:11,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:31:11,776 INFO L93 Difference]: Finished difference Result 258 states and 314 transitions. [2024-11-09 04:31:11,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 04:31:11,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2024-11-09 04:31:11,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:31:11,782 INFO L225 Difference]: With dead ends: 258 [2024-11-09 04:31:11,782 INFO L226 Difference]: Without dead ends: 170 [2024-11-09 04:31:11,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 04:31:11,784 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:31:11,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 127 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:31:11,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-09 04:31:11,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 164. [2024-11-09 04:31:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 113 states have (on average 1.2300884955752212) internal successors, (139), 123 states have internal predecessors, (139), 25 states have call successors, (25), 25 states have call predecessors, (25), 25 states have return successors, (29), 25 states have call predecessors, (29), 25 states have call successors, (29) [2024-11-09 04:31:11,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 193 transitions. [2024-11-09 04:31:11,827 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 193 transitions. Word has length 25 [2024-11-09 04:31:11,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:31:11,828 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 193 transitions. [2024-11-09 04:31:11,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 04:31:11,829 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 193 transitions. [2024-11-09 04:31:11,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 04:31:11,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:31:11,830 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:31:11,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 04:31:11,831 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:31:11,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:31:11,831 INFO L85 PathProgramCache]: Analyzing trace with hash 408640634, now seen corresponding path program 1 times [2024-11-09 04:31:11,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:31:11,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580158295] [2024-11-09 04:31:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:31:11,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:31:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 04:31:11,860 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 04:31:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 04:31:11,920 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 04:31:11,921 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 04:31:11,922 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 04:31:11,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 04:31:11,928 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-09 04:31:11,994 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 04:31:12,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 04:31:12 BoogieIcfgContainer [2024-11-09 04:31:12,004 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 04:31:12,004 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 04:31:12,004 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 04:31:12,005 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 04:31:12,005 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:31:09" (3/4) ... [2024-11-09 04:31:12,006 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 04:31:12,099 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9750592-6f50-4a45-a4d3-6965387d1bb4/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 04:31:12,099 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 04:31:12,100 INFO L158 Benchmark]: Toolchain (without parser) took 3603.63ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 97.9MB in the beginning and 58.6MB in the end (delta: 39.3MB). Peak memory consumption was 80.2MB. Max. memory is 16.1GB. [2024-11-09 04:31:12,100 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 140.5MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 04:31:12,100 INFO L158 Benchmark]: CACSL2BoogieTranslator took 545.59ms. Allocated memory is still 140.5MB. Free memory was 97.5MB in the beginning and 76.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 04:31:12,100 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.17ms. Allocated memory is still 140.5MB. Free memory was 76.5MB in the beginning and 74.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 04:31:12,101 INFO L158 Benchmark]: Boogie Preprocessor took 23.71ms. Allocated memory is still 140.5MB. Free memory was 74.5MB in the beginning and 72.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 04:31:12,101 INFO L158 Benchmark]: RCFGBuilder took 623.53ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 72.7MB in the beginning and 134.5MB in the end (delta: -61.8MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2024-11-09 04:31:12,101 INFO L158 Benchmark]: TraceAbstraction took 2256.76ms. Allocated memory is still 182.5MB. Free memory was 133.6MB in the beginning and 62.8MB in the end (delta: 70.8MB). Peak memory consumption was 70.5MB. Max. memory is 16.1GB. [2024-11-09 04:31:12,102 INFO L158 Benchmark]: Witness Printer took 94.67ms. Allocated memory is still 182.5MB. Free memory was 62.8MB in the beginning and 58.6MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 04:31:12,103 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 140.5MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 545.59ms. Allocated memory is still 140.5MB. Free memory was 97.5MB in the beginning and 76.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.17ms. Allocated memory is still 140.5MB. Free memory was 76.5MB in the beginning and 74.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.71ms. Allocated memory is still 140.5MB. Free memory was 74.5MB in the beginning and 72.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 623.53ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 72.7MB in the beginning and 134.5MB in the end (delta: -61.8MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2256.76ms. Allocated memory is still 182.5MB. Free memory was 133.6MB in the beginning and 62.8MB in the end (delta: 70.8MB). Peak memory consumption was 70.5MB. Max. memory is 16.1GB. * Witness Printer took 94.67ms. Allocated memory is still 182.5MB. Free memory was 62.8MB in the beginning and 58.6MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. 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,"libacc.i","") [153] - GenericResultAtLocation [Line: 519]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [519] - GenericResultAtLocation [Line: 528]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [528] - GenericResultAtLocation [Line: 627]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [627] - GenericResultAtLocation [Line: 695]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [695] - GenericResultAtLocation [Line: 859]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [859] - GenericResultAtLocation [Line: 885]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [885] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 524]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L323] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L534] int waterLevel = 1; [L535] int methaneLevelCritical = 0; [L699] int pumpRunning = 0; [L700] int systemActive = 1; [L131] int retValue_acc ; [L132] int tmp ; [L136] FCALL select_helpers() [L137] FCALL select_features() [L138] CALL, EXPR valid_product() [L912] int retValue_acc ; [L915] retValue_acc = 1 [L916] return (retValue_acc); [L138] RET, EXPR valid_product() [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L142] FCALL setup() [L143] CALL runTest() [L122] CALL test() [L630] int splverifierCounter ; [L631] int tmp ; [L632] int tmp___0 ; [L633] int tmp___1 ; [L634] int tmp___2 ; [L637] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L639] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L641] COND TRUE splverifierCounter < 4 [L647] tmp = __VERIFIER_nondet_int() [L649] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L651] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L552] COND TRUE waterLevel < 2 [L553] waterLevel = waterLevel + 1 [L651] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=2] [L657] tmp___0 = __VERIFIER_nondet_int() [L659] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=2] [L661] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L564] COND FALSE !(\read(methaneLevelCritical)) [L567] methaneLevelCritical = 1 [L661] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=2] [L667] tmp___2 = __VERIFIER_nondet_int() [L669] COND FALSE !(\read(tmp___2)) [L675] tmp___1 = __VERIFIER_nondet_int() [L677] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp___1=50, waterLevel=2] [L684] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L707] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L714] COND TRUE \read(systemActive) [L716] CALL processEnvironment() [L736] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L739] COND TRUE ! pumpRunning [L741] CALL, EXPR isHighWaterLevel() [L833] int retValue_acc ; [L834] int tmp ; [L835] int tmp___0 ; [L839] CALL, EXPR isHighWaterSensorDry() [L614] int retValue_acc ; [L617] COND FALSE !(waterLevel < 2) [L621] retValue_acc = 0 [L622] return (retValue_acc); [L839] RET, EXPR isHighWaterSensorDry() [L839] tmp = isHighWaterSensorDry() [L841] COND FALSE !(\read(tmp)) [L844] tmp___0 = 1 [L846] retValue_acc = tmp___0 [L847] return (retValue_acc); [L741] RET, EXPR isHighWaterLevel() [L741] tmp = isHighWaterLevel() [L743] COND TRUE \read(tmp) [L745] CALL activatePump() [L764] pumpRunning = 1 [L745] RET activatePump() [L716] RET processEnvironment() [L722] CALL __utac_acc__Specification1_spec__1() [L861] int tmp ; [L862] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L866] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L573] int retValue_acc ; [L576] retValue_acc = methaneLevelCritical [L577] return (retValue_acc); [L866] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L866] tmp = isMethaneLevelCritical() [L868] COND TRUE \read(tmp) [L870] CALL, EXPR isPumpRunning() [L788] int retValue_acc ; [L791] retValue_acc = pumpRunning [L792] return (retValue_acc); [L870] RET, EXPR isPumpRunning() [L870] tmp___0 = isPumpRunning() [L872] COND TRUE \read(tmp___0) [L874] CALL __automaton_fail() [L524] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 73 mSDsluCounter, 421 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 259 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 205 IncrementalHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 162 mSDtfsCounter, 205 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=5, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 226 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-09 04:31:12,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9750592-6f50-4a45-a4d3-6965387d1bb4/bin/utaipan-verify-YMUCfTKeje/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE