./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc125cf-e98e-40cd-acf1-5e9203249684/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc125cf-e98e-40cd-acf1-5e9203249684/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc125cf-e98e-40cd-acf1-5e9203249684/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc125cf-e98e-40cd-acf1-5e9203249684/bin/uautomizer-tBqnrhUYjU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc125cf-e98e-40cd-acf1-5e9203249684/bin/uautomizer-tBqnrhUYjU/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc125cf-e98e-40cd-acf1-5e9203249684/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80b4c453e300455caffbcb636daccd3af095acb6ed433fb3111a61f5db77a0b9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:06:59,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:06:59,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:06:59,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:06:59,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:06:59,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:06:59,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:06:59,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:06:59,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:06:59,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:06:59,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:06:59,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:06:59,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:06:59,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:06:59,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:06:59,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:06:59,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:06:59,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:06:59,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:06:59,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:06:59,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:06:59,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:06:59,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:06:59,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:06:59,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:06:59,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:06:59,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:06:59,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:06:59,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:06:59,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:06:59,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:06:59,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:06:59,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:06:59,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:06:59,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:06:59,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:06:59,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:06:59,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:06:59,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:06:59,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:06:59,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:06:59,537 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc125cf-e98e-40cd-acf1-5e9203249684/bin/uautomizer-tBqnrhUYjU/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-02 22:06:59,563 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:06:59,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:06:59,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:06:59,564 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:06:59,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:06:59,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:06:59,566 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:06:59,566 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-02 22:06:59,566 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-02 22:06:59,567 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-02 22:06:59,567 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-02 22:06:59,567 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-02 22:06:59,567 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-02 22:06:59,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:06:59,568 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:06:59,568 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:06:59,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:06:59,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:06:59,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:06:59,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-02 22:06:59,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-02 22:06:59,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-02 22:06:59,570 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:06:59,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:06:59,570 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-02 22:06:59,570 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:06:59,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-02 22:06:59,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:06:59,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:06:59,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:06:59,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:06:59,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:06:59,573 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-02 22:06:59,573 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_edc125cf-e98e-40cd-acf1-5e9203249684/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc125cf-e98e-40cd-acf1-5e9203249684/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80b4c453e300455caffbcb636daccd3af095acb6ed433fb3111a61f5db77a0b9 [2021-11-02 22:06:59,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:06:59,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:06:59,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:06:59,912 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:06:59,914 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:06:59,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc125cf-e98e-40cd-acf1-5e9203249684/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c [2021-11-02 22:07:00,007 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc125cf-e98e-40cd-acf1-5e9203249684/bin/uautomizer-tBqnrhUYjU/data/04b3c16de/cda07607879e4a57bebd50527401bf40/FLAGb2cc04a34 [2021-11-02 22:07:00,709 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:07:00,710 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc125cf-e98e-40cd-acf1-5e9203249684/sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c [2021-11-02 22:07:00,723 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc125cf-e98e-40cd-acf1-5e9203249684/bin/uautomizer-tBqnrhUYjU/data/04b3c16de/cda07607879e4a57bebd50527401bf40/FLAGb2cc04a34 [2021-11-02 22:07:00,984 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc125cf-e98e-40cd-acf1-5e9203249684/bin/uautomizer-tBqnrhUYjU/data/04b3c16de/cda07607879e4a57bebd50527401bf40 [2021-11-02 22:07:00,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:07:00,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:07:00,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:07:00,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:07:00,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:07:01,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:07:00" (1/1) ... [2021-11-02 22:07:01,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74f8b44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:01, skipping insertion in model container [2021-11-02 22:07:01,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:07:00" (1/1) ... [2021-11-02 22:07:01,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:07:01,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:07:01,213 WARN L228 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_edc125cf-e98e-40cd-acf1-5e9203249684/sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c[1605,1618] [2021-11-02 22:07:01,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:07:01,433 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:07:01,457 WARN L228 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_edc125cf-e98e-40cd-acf1-5e9203249684/sv-benchmarks/c/product-lines/minepump_spec2_product59.cil.c[1605,1618] [2021-11-02 22:07:01,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:07:01,538 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:07:01,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:01 WrapperNode [2021-11-02 22:07:01,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:07:01,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:07:01,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:07:01,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:07:01,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:01" (1/1) ... [2021-11-02 22:07:01,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:01" (1/1) ... [2021-11-02 22:07:01,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:07:01,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:07:01,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:07:01,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:07:01,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:01" (1/1) ... [2021-11-02 22:07:01,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:01" (1/1) ... [2021-11-02 22:07:01,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:01" (1/1) ... [2021-11-02 22:07:01,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:01" (1/1) ... [2021-11-02 22:07:01,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:01" (1/1) ... [2021-11-02 22:07:01,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:01" (1/1) ... [2021-11-02 22:07:01,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:01" (1/1) ... [2021-11-02 22:07:01,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:07:01,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:07:01,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:07:01,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:07:01,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:01" (1/1) ... [2021-11-02 22:07:01,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:07:01,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc125cf-e98e-40cd-acf1-5e9203249684/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:07:01,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc125cf-e98e-40cd-acf1-5e9203249684/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:07:01,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc125cf-e98e-40cd-acf1-5e9203249684/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-02 22:07:01,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:07:01,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:07:01,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:07:01,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:07:02,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:07:02,892 INFO L299 CfgBuilder]: Removed 198 assume(true) statements. [2021-11-02 22:07:02,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:07:02 BoogieIcfgContainer [2021-11-02 22:07:02,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:07:02,897 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-02 22:07:02,898 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-02 22:07:02,901 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-02 22:07:02,902 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 22:07:02,902 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 10:07:00" (1/3) ... [2021-11-02 22:07:02,904 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@332d86c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 10:07:02, skipping insertion in model container [2021-11-02 22:07:02,904 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 22:07:02,905 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:07:01" (2/3) ... [2021-11-02 22:07:02,905 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@332d86c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 10:07:02, skipping insertion in model container [2021-11-02 22:07:02,906 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 22:07:02,906 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:07:02" (3/3) ... [2021-11-02 22:07:02,907 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product59.cil.c [2021-11-02 22:07:02,963 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-02 22:07:02,963 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-02 22:07:02,963 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-02 22:07:02,963 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-02 22:07:02,964 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-02 22:07:02,964 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-02 22:07:02,964 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-02 22:07:02,964 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-02 22:07:02,989 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 138 states, 137 states have (on average 1.5182481751824817) internal successors, (208), 137 states have internal predecessors, (208), 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) [2021-11-02 22:07:03,032 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-11-02 22:07:03,033 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:07:03,033 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:07:03,042 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:03,042 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:03,042 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-02 22:07:03,045 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 138 states, 137 states have (on average 1.5182481751824817) internal successors, (208), 137 states have internal predecessors, (208), 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) [2021-11-02 22:07:03,062 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-11-02 22:07:03,064 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:07:03,064 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:07:03,065 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:03,066 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:03,077 INFO L791 eck$LassoCheckResult]: Stem: 132#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 53#L-1true havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 79#L532true havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 33#L540true main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 101#L496true assume 0 != main_~tmp~7; 11#L469true ~methAndRunningLastTime~0 := 0; 138#L377true havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 122#L388-1true [2021-11-02 22:07:03,078 INFO L793 eck$LassoCheckResult]: Loop: 122#L388-1true assume !false; 58#L315true assume test_~splverifierCounter~0 < 4; 129#L316true test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 20#L324true assume !(0 != test_~tmp~5); 106#L324-1true test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 38#L334true assume !(0 != test_~tmp___0~2); 50#L334-1true test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 36#L344true assume 0 != test_~tmp___2~0; 76#L350-1true assume !(0 != ~pumpRunning~0); 32#L78true assume !(0 != ~systemActive~0); 47#L85true havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 82#L955-2true __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 30#L388true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 122#L388-1true [2021-11-02 22:07:03,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:03,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-11-02 22:07:03,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:03,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195698118] [2021-11-02 22:07:03,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:03,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:03,473 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:07:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:03,676 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:07:03,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:03,688 INFO L85 PathProgramCache]: Analyzing trace with hash 13773843, now seen corresponding path program 1 times [2021-11-02 22:07:03,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:03,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548136045] [2021-11-02 22:07:03,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:03,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:03,710 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:07:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:03,719 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:07:03,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:03,721 INFO L85 PathProgramCache]: Analyzing trace with hash 847070349, now seen corresponding path program 1 times [2021-11-02 22:07:03,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:03,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621843112] [2021-11-02 22:07:03,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:03,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:03,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:03,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:03,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621843112] [2021-11-02 22:07:03,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621843112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:07:03,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:07:03,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:07:03,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571677082] [2021-11-02 22:07:04,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:04,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:07:04,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:07:04,096 INFO L87 Difference]: Start difference. First operand has 138 states, 137 states have (on average 1.5182481751824817) internal successors, (208), 137 states have internal predecessors, (208), 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) Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-11-02 22:07:04,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:04,352 INFO L93 Difference]: Finished difference Result 322 states and 463 transitions. [2021-11-02 22:07:04,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:07:04,354 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 322 states and 463 transitions. [2021-11-02 22:07:04,362 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 207 [2021-11-02 22:07:04,374 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 322 states to 301 states and 442 transitions. [2021-11-02 22:07:04,375 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 301 [2021-11-02 22:07:04,376 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 301 [2021-11-02 22:07:04,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 301 states and 442 transitions. [2021-11-02 22:07:04,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:07:04,380 INFO L681 BuchiCegarLoop]: Abstraction has 301 states and 442 transitions. [2021-11-02 22:07:04,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states and 442 transitions. [2021-11-02 22:07:04,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 175. [2021-11-02 22:07:04,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 175 states have (on average 1.4628571428571429) internal successors, (256), 174 states have internal predecessors, (256), 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) [2021-11-02 22:07:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 256 transitions. [2021-11-02 22:07:04,442 INFO L704 BuchiCegarLoop]: Abstraction has 175 states and 256 transitions. [2021-11-02 22:07:04,442 INFO L587 BuchiCegarLoop]: Abstraction has 175 states and 256 transitions. [2021-11-02 22:07:04,442 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-02 22:07:04,443 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 175 states and 256 transitions. [2021-11-02 22:07:04,445 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 120 [2021-11-02 22:07:04,445 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:07:04,445 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:07:04,446 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:04,446 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:04,447 INFO L791 eck$LassoCheckResult]: Stem: 609#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 558#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 559#L532 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 531#L540 main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 532#L496 assume 0 != main_~tmp~7; 491#L469 ~methAndRunningLastTime~0 := 0; 492#L377 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 521#L388-1 [2021-11-02 22:07:04,447 INFO L793 eck$LassoCheckResult]: Loop: 521#L388-1 assume !false; 567#L315 assume test_~splverifierCounter~0 < 4; 568#L316 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 508#L324 assume !(0 != test_~tmp~5); 510#L324-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 541#L334 assume !(0 != test_~tmp___0~2); 543#L334-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 537#L344 assume 0 != test_~tmp___2~0; 539#L350-1 assume !(0 != ~pumpRunning~0); 507#L78 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 511#L136 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 512#L110-1 assume !(0 == ~pumpRunning~0); 522#L85 havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 551#L955-2 __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 527#L388 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 521#L388-1 [2021-11-02 22:07:04,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:04,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-11-02 22:07:04,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:04,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632688568] [2021-11-02 22:07:04,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:04,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:04,522 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:07:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:04,605 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:07:04,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:04,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1366037980, now seen corresponding path program 1 times [2021-11-02 22:07:04,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:04,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110347565] [2021-11-02 22:07:04,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:04,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:04,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:04,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:04,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110347565] [2021-11-02 22:07:04,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110347565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:07:04,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:07:04,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:07:04,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821413038] [2021-11-02 22:07:04,624 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-02 22:07:04,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:04,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:07:04,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:07:04,626 INFO L87 Difference]: Start difference. First operand 175 states and 256 transitions. cyclomatic complexity: 84 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-11-02 22:07:04,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:04,738 INFO L93 Difference]: Finished difference Result 217 states and 302 transitions. [2021-11-02 22:07:04,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:07:04,739 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 217 states and 302 transitions. [2021-11-02 22:07:04,748 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2021-11-02 22:07:04,756 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 217 states to 217 states and 302 transitions. [2021-11-02 22:07:04,756 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 217 [2021-11-02 22:07:04,758 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 217 [2021-11-02 22:07:04,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 217 states and 302 transitions. [2021-11-02 22:07:04,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:07:04,764 INFO L681 BuchiCegarLoop]: Abstraction has 217 states and 302 transitions. [2021-11-02 22:07:04,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states and 302 transitions. [2021-11-02 22:07:04,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-02 22:07:04,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 217 states have (on average 1.391705069124424) internal successors, (302), 216 states have internal predecessors, (302), 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) [2021-11-02 22:07:04,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 302 transitions. [2021-11-02 22:07:04,795 INFO L704 BuchiCegarLoop]: Abstraction has 217 states and 302 transitions. [2021-11-02 22:07:04,795 INFO L587 BuchiCegarLoop]: Abstraction has 217 states and 302 transitions. [2021-11-02 22:07:04,795 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-02 22:07:04,795 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 217 states and 302 transitions. [2021-11-02 22:07:04,798 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2021-11-02 22:07:04,798 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:07:04,801 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:07:04,802 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:04,802 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:04,803 INFO L791 eck$LassoCheckResult]: Stem: 1014#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 958#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 959#L532 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 931#L540 main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 932#L496 assume 0 != main_~tmp~7; 890#L469 ~methAndRunningLastTime~0 := 0; 891#L377 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 920#L388-1 [2021-11-02 22:07:04,803 INFO L793 eck$LassoCheckResult]: Loop: 920#L388-1 assume !false; 967#L315 assume test_~splverifierCounter~0 < 4; 968#L316 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 907#L324 assume !(0 != test_~tmp~5); 909#L324-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 940#L334 assume !(0 != test_~tmp___0~2); 942#L334-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 937#L344 assume 0 != test_~tmp___2~0; 939#L350-1 assume !(0 != ~pumpRunning~0); 930#L78 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 910#L136 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 911#L110-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 900#L995-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 892#L1000-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 893#L256-3 assume !(0 != isHighWaterLevel_~tmp~3);isHighWaterLevel_~tmp___0~0 := 1; 1007#L256-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 935#L262-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 936#L114-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 950#L85 havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 951#L955-2 __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 926#L388 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 920#L388-1 [2021-11-02 22:07:04,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:04,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-11-02 22:07:04,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:04,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310891494] [2021-11-02 22:07:04,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:04,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:04,874 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:07:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:04,955 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:07:04,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:04,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1305577226, now seen corresponding path program 1 times [2021-11-02 22:07:04,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:04,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297329938] [2021-11-02 22:07:04,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:04,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:05,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:05,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297329938] [2021-11-02 22:07:05,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297329938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:07:05,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:07:05,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:07:05,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334057510] [2021-11-02 22:07:05,005 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-02 22:07:05,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:05,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:07:05,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:07:05,006 INFO L87 Difference]: Start difference. First operand 217 states and 302 transitions. cyclomatic complexity: 88 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-11-02 22:07:05,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:05,112 INFO L93 Difference]: Finished difference Result 421 states and 579 transitions. [2021-11-02 22:07:05,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:07:05,113 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 421 states and 579 transitions. [2021-11-02 22:07:05,118 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 300 [2021-11-02 22:07:05,129 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 421 states to 421 states and 579 transitions. [2021-11-02 22:07:05,142 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 421 [2021-11-02 22:07:05,143 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 421 [2021-11-02 22:07:05,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 421 states and 579 transitions. [2021-11-02 22:07:05,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:07:05,147 INFO L681 BuchiCegarLoop]: Abstraction has 421 states and 579 transitions. [2021-11-02 22:07:05,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states and 579 transitions. [2021-11-02 22:07:05,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 229. [2021-11-02 22:07:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 229 states have (on average 1.3711790393013101) internal successors, (314), 228 states have internal predecessors, (314), 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) [2021-11-02 22:07:05,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 314 transitions. [2021-11-02 22:07:05,176 INFO L704 BuchiCegarLoop]: Abstraction has 229 states and 314 transitions. [2021-11-02 22:07:05,177 INFO L587 BuchiCegarLoop]: Abstraction has 229 states and 314 transitions. [2021-11-02 22:07:05,177 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-02 22:07:05,177 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 229 states and 314 transitions. [2021-11-02 22:07:05,180 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 160 [2021-11-02 22:07:05,180 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:07:05,180 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:07:05,181 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:05,181 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:05,182 INFO L791 eck$LassoCheckResult]: Stem: 1678#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1608#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 1609#L532 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 1580#L540 main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 1581#L496 assume 0 != main_~tmp~7; 1538#L469 ~methAndRunningLastTime~0 := 0; 1539#L377 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1569#L388-1 [2021-11-02 22:07:05,182 INFO L793 eck$LassoCheckResult]: Loop: 1569#L388-1 assume !false; 1618#L315 assume test_~splverifierCounter~0 < 4; 1619#L316 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 1556#L324 assume !(0 != test_~tmp~5); 1558#L324-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 1589#L334 assume !(0 != test_~tmp___0~2); 1591#L334-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 1586#L344 assume 0 != test_~tmp___2~0; 1588#L350-1 assume !(0 != ~pumpRunning~0); 1579#L78 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 1559#L136 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 1560#L110-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 1548#L995-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~12 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 1540#L1000-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 1541#L256-3 assume !(0 != isHighWaterLevel_~tmp~3);isHighWaterLevel_~tmp___0~0 := 1; 1666#L256-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1584#L262-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 1585#L114-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 1638#L85 havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 1743#L955-2 __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 1575#L388 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 1569#L388-1 [2021-11-02 22:07:05,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:05,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-11-02 22:07:05,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:05,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416836631] [2021-11-02 22:07:05,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:05,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:05,280 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:07:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:05,375 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:07:05,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:05,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1985635596, now seen corresponding path program 1 times [2021-11-02 22:07:05,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:05,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318196517] [2021-11-02 22:07:05,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:05,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:05,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:05,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318196517] [2021-11-02 22:07:05,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318196517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:07:05,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:07:05,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:07:05,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130128890] [2021-11-02 22:07:05,441 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-02 22:07:05,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:05,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:07:05,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:07:05,444 INFO L87 Difference]: Start difference. First operand 229 states and 314 transitions. cyclomatic complexity: 88 Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-11-02 22:07:05,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:05,601 INFO L93 Difference]: Finished difference Result 721 states and 989 transitions. [2021-11-02 22:07:05,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:07:05,602 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 721 states and 989 transitions. [2021-11-02 22:07:05,611 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 524 [2021-11-02 22:07:05,619 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 721 states to 721 states and 989 transitions. [2021-11-02 22:07:05,619 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 721 [2021-11-02 22:07:05,620 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 721 [2021-11-02 22:07:05,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 721 states and 989 transitions. [2021-11-02 22:07:05,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:07:05,629 INFO L681 BuchiCegarLoop]: Abstraction has 721 states and 989 transitions. [2021-11-02 22:07:05,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states and 989 transitions. [2021-11-02 22:07:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 247. [2021-11-02 22:07:05,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 247 states have (on average 1.3441295546558705) internal successors, (332), 246 states have internal predecessors, (332), 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) [2021-11-02 22:07:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 332 transitions. [2021-11-02 22:07:05,654 INFO L704 BuchiCegarLoop]: Abstraction has 247 states and 332 transitions. [2021-11-02 22:07:05,654 INFO L587 BuchiCegarLoop]: Abstraction has 247 states and 332 transitions. [2021-11-02 22:07:05,655 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-02 22:07:05,655 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 247 states and 332 transitions. [2021-11-02 22:07:05,657 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 172 [2021-11-02 22:07:05,657 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:07:05,657 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:07:05,660 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:05,661 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:05,661 INFO L791 eck$LassoCheckResult]: Stem: 2650#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 2575#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 2576#L532 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 2546#L540 main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 2547#L496 assume 0 != main_~tmp~7; 2502#L469 ~methAndRunningLastTime~0 := 0; 2503#L377 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2533#L388-1 [2021-11-02 22:07:05,661 INFO L793 eck$LassoCheckResult]: Loop: 2533#L388-1 assume !false; 2583#L315 assume test_~splverifierCounter~0 < 4; 2584#L316 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 2702#L324 assume !(0 != test_~tmp~5); 2626#L324-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 2627#L334 assume !(0 != test_~tmp___0~2); 2699#L334-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 2550#L344 assume 0 != test_~tmp___2~0; 2552#L350-1 assume !(0 != ~pumpRunning~0); 2543#L78 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 2520#L136 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 2521#L110-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 2514#L995-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~12 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 2515#L1000-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 2656#L256-3 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~0 := 0; 2633#L256-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 2548#L262-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 2549#L114-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 2563#L85 havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 2564#L955-2 __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 2537#L388 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 2533#L388-1 [2021-11-02 22:07:05,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:05,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 5 times [2021-11-02 22:07:05,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:05,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702656118] [2021-11-02 22:07:05,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:05,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:05,705 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:07:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:05,747 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:07:05,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:05,748 INFO L85 PathProgramCache]: Analyzing trace with hash 210628234, now seen corresponding path program 1 times [2021-11-02 22:07:05,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:05,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110606033] [2021-11-02 22:07:05,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:05,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:07:05,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:07:05,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:07:05,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110606033] [2021-11-02 22:07:05,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110606033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:07:05,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:07:05,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:07:05,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035787089] [2021-11-02 22:07:05,780 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-02 22:07:05,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:07:05,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:07:05,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:07:05,781 INFO L87 Difference]: Start difference. First operand 247 states and 332 transitions. cyclomatic complexity: 88 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-11-02 22:07:05,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:07:05,869 INFO L93 Difference]: Finished difference Result 421 states and 567 transitions. [2021-11-02 22:07:05,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:07:05,869 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 421 states and 567 transitions. [2021-11-02 22:07:05,873 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 300 [2021-11-02 22:07:05,877 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 421 states to 421 states and 567 transitions. [2021-11-02 22:07:05,877 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 421 [2021-11-02 22:07:05,878 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 421 [2021-11-02 22:07:05,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 421 states and 567 transitions. [2021-11-02 22:07:05,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-02 22:07:05,879 INFO L681 BuchiCegarLoop]: Abstraction has 421 states and 567 transitions. [2021-11-02 22:07:05,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states and 567 transitions. [2021-11-02 22:07:05,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 247. [2021-11-02 22:07:05,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 247 states have (on average 1.319838056680162) internal successors, (326), 246 states have internal predecessors, (326), 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) [2021-11-02 22:07:05,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 326 transitions. [2021-11-02 22:07:05,887 INFO L704 BuchiCegarLoop]: Abstraction has 247 states and 326 transitions. [2021-11-02 22:07:05,887 INFO L587 BuchiCegarLoop]: Abstraction has 247 states and 326 transitions. [2021-11-02 22:07:05,887 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-02 22:07:05,887 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 247 states and 326 transitions. [2021-11-02 22:07:05,889 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 172 [2021-11-02 22:07:05,889 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:07:05,889 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:07:05,890 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:05,890 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:07:05,890 INFO L791 eck$LassoCheckResult]: Stem: 3329#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(110, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string16.base, #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(102, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 3 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string18.base, #t~string18.offset, 1);call write~init~int(80, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(117, #t~string18.base, 2 + #t~string18.offset, 1);call write~init~int(109, #t~string18.base, 3 + #t~string18.offset, 1);call write~init~int(112, #t~string18.base, 4 + #t~string18.offset, 1);call write~init~int(58, #t~string18.base, 5 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 6 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(110, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 2 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(102, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 3 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string24.base, #t~string24.offset, 1);call write~init~int(32, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string26.base, #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 1 + #t~string26.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 3254#L-1 havoc main_#res;havoc main_#t~ret35, main_~retValue_acc~4, main_~tmp~7;havoc main_~retValue_acc~4;havoc main_~tmp~7; 3255#L532 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := 1;valid_product_#res := valid_product_~retValue_acc~6; 3223#L540 main_#t~ret35 := valid_product_#res;main_~tmp~7 := main_#t~ret35;havoc main_#t~ret35; 3224#L496 assume 0 != main_~tmp~7; 3180#L469 ~methAndRunningLastTime~0 := 0; 3181#L377 havoc test_#t~nondet29, test_#t~nondet30, test_#t~nondet31, test_#t~nondet32, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 3333#L388-1 [2021-11-02 22:07:05,891 INFO L793 eck$LassoCheckResult]: Loop: 3333#L388-1 assume !false; 3394#L315 assume test_~splverifierCounter~0 < 4; 3326#L316 test_~tmp~5 := test_#t~nondet29;havoc test_#t~nondet29; 3199#L324 assume !(0 != test_~tmp~5); 3201#L324-1 test_~tmp___0~2 := test_#t~nondet30;havoc test_#t~nondet30; 3232#L334 assume !(0 != test_~tmp___0~2); 3234#L334-1 test_~tmp___2~0 := test_#t~nondet31;havoc test_#t~nondet31; 3229#L344 assume 0 != test_~tmp___2~0; 3231#L350-1 assume !(0 != ~pumpRunning~0); 3222#L78 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~1;havoc processEnvironment_~tmp~1; 3202#L136 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret7, processEnvironment__wrappee__highWaterSensor_~tmp~0;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0; 3203#L110-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret27, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 3191#L995-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 3192#L1000-1 isHighWaterLevel_#t~ret27 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret27;havoc isHighWaterLevel_#t~ret27; 3313#L256-3 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~0 := 0; 3314#L256-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 3227#L262-1 processEnvironment__wrappee__highWaterSensor_#t~ret7 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~0 := processEnvironment__wrappee__highWaterSensor_#t~ret7;havoc processEnvironment__wrappee__highWaterSensor_#t~ret7; 3228#L114-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0); 3287#L85 havoc __utac_acc__Specification2_spec__2_#t~ret33, __utac_acc__Specification2_spec__2_#t~ret34, __utac_acc__Specification2_spec__2_~tmp~6, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~6;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 3399#L955-2 __utac_acc__Specification2_spec__2_#t~ret33 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~6 := __utac_acc__Specification2_spec__2_#t~ret33;havoc __utac_acc__Specification2_spec__2_#t~ret33; 3397#L388 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~6);~methAndRunningLastTime~0 := 0; 3333#L388-1 [2021-11-02 22:07:05,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:05,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 6 times [2021-11-02 22:07:05,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:05,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125625085] [2021-11-02 22:07:05,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:05,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:05,935 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:07:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:05,967 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:07:05,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:05,968 INFO L85 PathProgramCache]: Analyzing trace with hash -469430136, now seen corresponding path program 1 times [2021-11-02 22:07:05,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:05,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574107794] [2021-11-02 22:07:05,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:05,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:05,973 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:07:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:05,980 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:07:05,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:07:05,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1303711490, now seen corresponding path program 1 times [2021-11-02 22:07:05,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:07:05,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941212277] [2021-11-02 22:07:05,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:07:05,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:07:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:06,007 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:07:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:07:06,047 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:08:12,640 WARN L207 SmtUtils]: Spent 1.11 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-11-02 22:09:23,311 WARN L207 SmtUtils]: Spent 34.14 s on a formula simplification that was a NOOP. DAG size: 435 [2021-11-02 22:09:23,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 10:09:23 BoogieIcfgContainer [2021-11-02 22:09:23,438 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-02 22:09:23,439 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:09:23,439 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:09:23,439 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:09:23,440 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:07:02" (3/4) ... [2021-11-02 22:09:23,443 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-02 22:09:23,498 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc125cf-e98e-40cd-acf1-5e9203249684/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:09:23,499 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:09:23,501 INFO L168 Benchmark]: Toolchain (without parser) took 142507.44 ms. Allocated memory was 83.9 MB in the beginning and 136.3 MB in the end (delta: 52.4 MB). Free memory was 46.3 MB in the beginning and 72.5 MB in the end (delta: -26.2 MB). Peak memory consumption was 29.8 MB. Max. memory is 16.1 GB. [2021-11-02 22:09:23,501 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 83.9 MB. Free memory is still 63.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:09:23,502 INFO L168 Benchmark]: CACSL2BoogieTranslator took 544.64 ms. Allocated memory was 83.9 MB in the beginning and 111.1 MB in the end (delta: 27.3 MB). Free memory was 46.0 MB in the beginning and 81.4 MB in the end (delta: -35.3 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-11-02 22:09:23,502 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.87 ms. Allocated memory is still 111.1 MB. Free memory was 81.4 MB in the beginning and 77.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-02 22:09:23,503 INFO L168 Benchmark]: Boogie Preprocessor took 96.03 ms. Allocated memory is still 111.1 MB. Free memory was 77.2 MB in the beginning and 74.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-02 22:09:23,503 INFO L168 Benchmark]: RCFGBuilder took 1154.03 ms. Allocated memory is still 111.1 MB. Free memory was 74.2 MB in the beginning and 83.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. [2021-11-02 22:09:23,503 INFO L168 Benchmark]: BuchiAutomizer took 140540.79 ms. Allocated memory was 111.1 MB in the beginning and 136.3 MB in the end (delta: 25.2 MB). Free memory was 83.7 MB in the beginning and 74.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 84.3 MB. Max. memory is 16.1 GB. [2021-11-02 22:09:23,504 INFO L168 Benchmark]: Witness Printer took 61.28 ms. Allocated memory is still 136.3 MB. Free memory was 74.6 MB in the beginning and 72.5 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:09:23,506 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 83.9 MB. Free memory is still 63.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 544.64 ms. Allocated memory was 83.9 MB in the beginning and 111.1 MB in the end (delta: 27.3 MB). Free memory was 46.0 MB in the beginning and 81.4 MB in the end (delta: -35.3 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 102.87 ms. Allocated memory is still 111.1 MB. Free memory was 81.4 MB in the beginning and 77.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 96.03 ms. Allocated memory is still 111.1 MB. Free memory was 77.2 MB in the beginning and 74.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1154.03 ms. Allocated memory is still 111.1 MB. Free memory was 74.2 MB in the beginning and 83.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 140540.79 ms. Allocated memory was 111.1 MB in the beginning and 136.3 MB in the end (delta: 25.2 MB). Free memory was 83.7 MB in the beginning and 74.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 84.3 MB. Max. memory is 16.1 GB. * Witness Printer took 61.28 ms. Allocated memory is still 136.3 MB. Free memory was 74.6 MB in the beginning and 72.5 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (5 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.5 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 247 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 140.4s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 139.2s. Construction of modules took 0.4s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 966 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 247 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1311 SDtfs, 2091 SDslu, 2269 SDs, 0 SdLazy, 290 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 314]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=32209} State at position 1 is {NULL=0, NULL=0, NULL=32219, NULL=32209, NULL=0, NULL=32224, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@30726fc=0, NULL=0, NULL=32220, methaneLevelCritical=0, tmp=0, NULL=0, retValue_acc=0, NULL=32226, NULL=0, tmp___1=0, NULL=0, NULL=32211, cleanupTimeShifts=4, retValue_acc=0, NULL=32235, waterLevel=1, NULL=32222, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@41fea775=0, NULL=32221, \result=1, head=0, pumpRunning=0, NULL=32218, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6a8fa676=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3ab359c7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d420a53=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f7c0c57=66, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a4ef88a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@33671084=0, NULL=0, tmp=1, NULL=0, NULL=32231, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@dd8f2b0=0, NULL=0, tmp___0=0, NULL=32228, methAndRunningLastTime=0, NULL=32229, NULL=32230, tmp=0, head=0, NULL=0, NULL=32239, retValue_acc=0, NULL=32227, tmp___0=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@62894286=0, NULL=0, tmp=0, NULL=0, systemActive=1, NULL=32232, NULL=0, NULL=32216, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=32210, NULL=32237, \result=0, NULL=32225, NULL=0, NULL=0, retValue_acc=1, NULL=32213, NULL=32234, NULL=32217, NULL=32215, tmp___0=0, retValue_acc=1, tmp___2=66, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=32212, NULL=32223, NULL=0, NULL=0, NULL=32236, NULL=0, NULL=32233, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L70] int pumpRunning = 0; [L71] int systemActive = 1; [L371] int methAndRunningLastTime ; [L410] int cleanupTimeShifts = 4; [L714] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L912] int waterLevel = 1; [L913] int methaneLevelCritical = 0; [L487] int retValue_acc ; [L488] int tmp ; [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L376] methAndRunningLastTime = 0 [L305] int splverifierCounter ; [L306] int tmp ; [L307] int tmp___0 ; [L308] int tmp___1 ; [L309] int tmp___2 ; [L312] splverifierCounter = 0 Loop: [L314] COND TRUE 1 [L316] COND TRUE splverifierCounter < 4 [L322] tmp = __VERIFIER_nondet_int() [L324] COND FALSE !(\read(tmp)) [L332] tmp___0 = __VERIFIER_nondet_int() [L334] COND FALSE !(\read(tmp___0)) [L342] tmp___2 = __VERIFIER_nondet_int() [L344] COND TRUE \read(tmp___2) [L78] COND FALSE !(\read(pumpRunning)) [L85] COND TRUE \read(systemActive) [L133] int tmp ; [L136] COND FALSE !(\read(pumpRunning)) [L107] int tmp ; [L110] COND TRUE ! pumpRunning [L248] int retValue_acc ; [L249] int tmp ; [L250] int tmp___0 ; [L992] int retValue_acc ; [L995] COND TRUE waterLevel < 2 [L996] retValue_acc = 1 [L997] return (retValue_acc); [L254] tmp = isHighWaterSensorDry() [L256] COND TRUE \read(tmp) [L257] tmp___0 = 0 [L261] retValue_acc = tmp___0 [L262] return (retValue_acc); [L112] tmp = isHighWaterLevel() [L114] COND FALSE !(\read(tmp)) [L381] int tmp ; [L382] int tmp___0 ; [L951] int retValue_acc ; [L954] retValue_acc = methaneLevelCritical [L955] return (retValue_acc); [L386] tmp = isMethaneLevelCritical() [L388] COND FALSE !(\read(tmp)) [L404] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-02 22:09:23,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc125cf-e98e-40cd-acf1-5e9203249684/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)