./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product43.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product43.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80c186986e830d4bb291929eac4e7624996dc1953e9c0441022d003e4def396a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:07:23,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:07:23,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:07:23,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:07:23,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:07:23,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:07:23,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:07:23,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:07:23,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:07:23,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:07:23,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:07:23,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:07:23,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:07:23,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:07:23,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:07:23,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:07:23,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:07:23,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:07:23,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:07:23,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:07:23,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:07:23,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:07:23,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:07:23,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:07:23,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:07:23,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:07:23,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:07:23,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:07:23,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:07:23,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:07:23,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:07:23,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:07:23,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:07:23,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:07:23,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:07:23,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:07:23,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:07:23,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:07:23,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:07:23,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:07:23,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:07:23,861 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:07:23,897 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:07:23,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:07:23,903 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:07:23,903 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:07:23,904 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:07:23,904 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:07:23,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:07:23,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:07:23,905 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:07:23,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:07:23,907 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:07:23,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:07:23,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:07:23,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:07:23,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:07:23,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:07:23,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:07:23,908 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:07:23,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:07:23,908 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:07:23,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:07:23,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:07:23,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:07:23,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:07:23,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:23,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:07:23,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:07:23,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:07:23,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:07:23,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:07:23,912 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:07:23,912 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:07:23,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:07:23,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80c186986e830d4bb291929eac4e7624996dc1953e9c0441022d003e4def396a [2022-11-02 21:07:24,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:07:24,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:07:24,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:07:24,203 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:07:24,204 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:07:24,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/product-lines/minepump_spec2_product43.cil.c [2022-11-02 21:07:24,269 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/data/0e5f4cb56/cdf39f2c58064c2ba5410bcae8299794/FLAG771c4e617 [2022-11-02 21:07:24,901 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:07:24,902 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/sv-benchmarks/c/product-lines/minepump_spec2_product43.cil.c [2022-11-02 21:07:24,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/data/0e5f4cb56/cdf39f2c58064c2ba5410bcae8299794/FLAG771c4e617 [2022-11-02 21:07:25,183 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/data/0e5f4cb56/cdf39f2c58064c2ba5410bcae8299794 [2022-11-02 21:07:25,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:07:25,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:07:25,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:25,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:07:25,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:07:25,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:25" (1/1) ... [2022-11-02 21:07:25,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fba2b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:25, skipping insertion in model container [2022-11-02 21:07:25,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:25" (1/1) ... [2022-11-02 21:07:25,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:07:25,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:07:25,526 WARN L230 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_8e34ee32-774f-4a14-b158-c11ac2e21bc6/sv-benchmarks/c/product-lines/minepump_spec2_product43.cil.c[18403,18416] [2022-11-02 21:07:25,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:25,538 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:07:25,636 WARN L230 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_8e34ee32-774f-4a14-b158-c11ac2e21bc6/sv-benchmarks/c/product-lines/minepump_spec2_product43.cil.c[18403,18416] [2022-11-02 21:07:25,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:25,665 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:07:25,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:25 WrapperNode [2022-11-02 21:07:25,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:25,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:25,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:07:25,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:07:25,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:25" (1/1) ... [2022-11-02 21:07:25,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:25" (1/1) ... [2022-11-02 21:07:25,754 INFO L138 Inliner]: procedures = 55, calls = 154, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 249 [2022-11-02 21:07:25,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:25,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:07:25,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:07:25,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:07:25,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:25" (1/1) ... [2022-11-02 21:07:25,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:25" (1/1) ... [2022-11-02 21:07:25,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:25" (1/1) ... [2022-11-02 21:07:25,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:25" (1/1) ... [2022-11-02 21:07:25,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:25" (1/1) ... [2022-11-02 21:07:25,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:25" (1/1) ... [2022-11-02 21:07:25,819 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:25" (1/1) ... [2022-11-02 21:07:25,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:25" (1/1) ... [2022-11-02 21:07:25,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:07:25,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:07:25,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:07:25,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:07:25,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:25" (1/1) ... [2022-11-02 21:07:25,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:25,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:25,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:25,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:07:25,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:07:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-02 21:07:25,943 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-02 21:07:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-02 21:07:25,943 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-02 21:07:25,943 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-02 21:07:25,944 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-02 21:07:25,944 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-02 21:07:25,945 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-02 21:07:25,945 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-02 21:07:25,945 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-02 21:07:25,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:07:25,945 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-02 21:07:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-02 21:07:25,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:07:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:07:26,054 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:07:26,056 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:07:26,394 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:07:26,402 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:07:26,413 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 21:07:26,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:26 BoogieIcfgContainer [2022-11-02 21:07:26,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:07:26,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:07:26,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:07:26,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:07:26,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:07:25" (1/3) ... [2022-11-02 21:07:26,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274d6f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:26, skipping insertion in model container [2022-11-02 21:07:26,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:25" (2/3) ... [2022-11-02 21:07:26,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274d6f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:26, skipping insertion in model container [2022-11-02 21:07:26,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:26" (3/3) ... [2022-11-02 21:07:26,429 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product43.cil.c [2022-11-02 21:07:26,449 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:07:26,449 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:07:26,534 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:07:26,550 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ea4751d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:07:26,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:07:26,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 73 states have internal predecessors, (93), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-02 21:07:26,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 21:07:26,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:26,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:26,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:26,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:26,582 INFO L85 PathProgramCache]: Analyzing trace with hash -475586952, now seen corresponding path program 1 times [2022-11-02 21:07:26,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:26,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267069412] [2022-11-02 21:07:26,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:26,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:26,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:07:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:26,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:26,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:26,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267069412] [2022-11-02 21:07:26,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267069412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:26,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:26,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:07:26,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292045454] [2022-11-02 21:07:26,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:26,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:07:26,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:26,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:07:26,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:07:26,939 INFO L87 Difference]: Start difference. First operand has 85 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 73 states have internal predecessors, (93), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:07:26,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:26,973 INFO L93 Difference]: Finished difference Result 161 states and 220 transitions. [2022-11-02 21:07:26,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:07:26,976 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-11-02 21:07:26,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:27,001 INFO L225 Difference]: With dead ends: 161 [2022-11-02 21:07:27,001 INFO L226 Difference]: Without dead ends: 76 [2022-11-02 21:07:27,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:07:27,009 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:27,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:27,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-02 21:07:27,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-11-02 21:07:27,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 65 states have internal predecessors, (79), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-02 21:07:27,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2022-11-02 21:07:27,076 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 25 [2022-11-02 21:07:27,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:27,076 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2022-11-02 21:07:27,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:07:27,077 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2022-11-02 21:07:27,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 21:07:27,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:27,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:27,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:07:27,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:27,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:27,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1314087273, now seen corresponding path program 1 times [2022-11-02 21:07:27,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:27,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629875183] [2022-11-02 21:07:27,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:27,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:27,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-02 21:07:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:27,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:27,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:27,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629875183] [2022-11-02 21:07:27,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629875183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:27,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:27,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:27,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393123284] [2022-11-02 21:07:27,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:27,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:27,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:27,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:27,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:27,301 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:07:27,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:27,328 INFO L93 Difference]: Finished difference Result 113 states and 146 transitions. [2022-11-02 21:07:27,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:27,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-11-02 21:07:27,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:27,336 INFO L225 Difference]: With dead ends: 113 [2022-11-02 21:07:27,338 INFO L226 Difference]: Without dead ends: 67 [2022-11-02 21:07:27,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:27,343 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 17 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:27,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 149 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:27,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-02 21:07:27,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-11-02 21:07:27,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 59 states have internal predecessors, (72), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-02 21:07:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2022-11-02 21:07:27,373 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 26 [2022-11-02 21:07:27,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:27,374 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2022-11-02 21:07:27,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:07:27,374 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2022-11-02 21:07:27,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:07:27,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:27,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:27,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:07:27,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:27,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:27,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2114194344, now seen corresponding path program 1 times [2022-11-02 21:07:27,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:27,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799696625] [2022-11-02 21:07:27,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:27,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:27,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:07:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:27,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:27,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799696625] [2022-11-02 21:07:27,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799696625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:27,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:27,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:07:27,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376245008] [2022-11-02 21:07:27,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:27,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:07:27,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:27,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:07:27,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:07:27,665 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:07:27,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:27,866 INFO L93 Difference]: Finished difference Result 224 states and 296 transitions. [2022-11-02 21:07:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:07:27,867 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-11-02 21:07:27,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:27,869 INFO L225 Difference]: With dead ends: 224 [2022-11-02 21:07:27,869 INFO L226 Difference]: Without dead ends: 165 [2022-11-02 21:07:27,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:27,871 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 237 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:27,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 413 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:27,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-02 21:07:27,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 155. [2022-11-02 21:07:27,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 122 states have (on average 1.3688524590163935) internal successors, (167), 133 states have internal predecessors, (167), 18 states have call successors, (18), 14 states have call predecessors, (18), 14 states have return successors, (19), 16 states have call predecessors, (19), 18 states have call successors, (19) [2022-11-02 21:07:27,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 204 transitions. [2022-11-02 21:07:27,895 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 204 transitions. Word has length 30 [2022-11-02 21:07:27,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:27,896 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 204 transitions. [2022-11-02 21:07:27,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:07:27,896 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 204 transitions. [2022-11-02 21:07:27,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-02 21:07:27,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:27,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:27,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:07:27,899 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:27,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:27,899 INFO L85 PathProgramCache]: Analyzing trace with hash -642046637, now seen corresponding path program 1 times [2022-11-02 21:07:27,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:27,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250746381] [2022-11-02 21:07:27,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:27,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:27,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:07:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:27,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 21:07:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:27,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:27,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:27,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250746381] [2022-11-02 21:07:27,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250746381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:27,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:27,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:27,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359374912] [2022-11-02 21:07:27,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:27,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:27,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:27,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:27,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:27,990 INFO L87 Difference]: Start difference. First operand 155 states and 204 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:07:28,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:28,065 INFO L93 Difference]: Finished difference Result 379 states and 507 transitions. [2022-11-02 21:07:28,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:28,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2022-11-02 21:07:28,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:28,068 INFO L225 Difference]: With dead ends: 379 [2022-11-02 21:07:28,071 INFO L226 Difference]: Without dead ends: 232 [2022-11-02 21:07:28,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:28,076 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 58 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:28,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 138 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:28,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-02 21:07:28,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2022-11-02 21:07:28,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 179 states have (on average 1.3407821229050279) internal successors, (240), 194 states have internal predecessors, (240), 26 states have call successors, (26), 24 states have call predecessors, (26), 24 states have return successors, (32), 26 states have call predecessors, (32), 26 states have call successors, (32) [2022-11-02 21:07:28,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 298 transitions. [2022-11-02 21:07:28,125 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 298 transitions. Word has length 35 [2022-11-02 21:07:28,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:28,126 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 298 transitions. [2022-11-02 21:07:28,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:07:28,127 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 298 transitions. [2022-11-02 21:07:28,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-02 21:07:28,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:28,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:28,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:07:28,136 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:28,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:28,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1899376531, now seen corresponding path program 1 times [2022-11-02 21:07:28,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:28,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953152553] [2022-11-02 21:07:28,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:28,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:28,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:07:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:28,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:28,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:28,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953152553] [2022-11-02 21:07:28,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953152553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:28,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:28,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:07:28,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675887329] [2022-11-02 21:07:28,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:28,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:07:28,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:28,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:07:28,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:28,374 INFO L87 Difference]: Start difference. First operand 230 states and 298 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:07:28,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:28,443 INFO L93 Difference]: Finished difference Result 464 states and 609 transitions. [2022-11-02 21:07:28,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:07:28,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-11-02 21:07:28,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:28,455 INFO L225 Difference]: With dead ends: 464 [2022-11-02 21:07:28,455 INFO L226 Difference]: Without dead ends: 242 [2022-11-02 21:07:28,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:28,458 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 56 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:28,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 322 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:28,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-02 21:07:28,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 227. [2022-11-02 21:07:28,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 176 states have (on average 1.3125) internal successors, (231), 191 states have internal predecessors, (231), 26 states have call successors, (26), 24 states have call predecessors, (26), 24 states have return successors, (32), 26 states have call predecessors, (32), 26 states have call successors, (32) [2022-11-02 21:07:28,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 289 transitions. [2022-11-02 21:07:28,485 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 289 transitions. Word has length 34 [2022-11-02 21:07:28,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:28,485 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 289 transitions. [2022-11-02 21:07:28,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:07:28,486 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 289 transitions. [2022-11-02 21:07:28,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 21:07:28,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:28,487 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:28,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:07:28,488 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:28,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:28,489 INFO L85 PathProgramCache]: Analyzing trace with hash -2083460262, now seen corresponding path program 1 times [2022-11-02 21:07:28,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:28,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311588288] [2022-11-02 21:07:28,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:28,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:28,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 21:07:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:28,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 21:07:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:28,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:07:28,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:28,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311588288] [2022-11-02 21:07:28,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311588288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:28,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:28,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:07:28,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066611522] [2022-11-02 21:07:28,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:28,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:28,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:28,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:28,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:28,601 INFO L87 Difference]: Start difference. First operand 227 states and 289 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:07:28,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:28,659 INFO L93 Difference]: Finished difference Result 643 states and 851 transitions. [2022-11-02 21:07:28,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:28,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2022-11-02 21:07:28,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:28,663 INFO L225 Difference]: With dead ends: 643 [2022-11-02 21:07:28,663 INFO L226 Difference]: Without dead ends: 424 [2022-11-02 21:07:28,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:07:28,665 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 55 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:28,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 163 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:28,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-11-02 21:07:28,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 422. [2022-11-02 21:07:28,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 330 states have (on average 1.3) internal successors, (429), 352 states have internal predecessors, (429), 50 states have call successors, (50), 46 states have call predecessors, (50), 41 states have return successors, (66), 45 states have call predecessors, (66), 50 states have call successors, (66) [2022-11-02 21:07:28,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 545 transitions. [2022-11-02 21:07:28,717 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 545 transitions. Word has length 47 [2022-11-02 21:07:28,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:28,717 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 545 transitions. [2022-11-02 21:07:28,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:07:28,718 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 545 transitions. [2022-11-02 21:07:28,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 21:07:28,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:28,725 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:28,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:07:28,726 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:28,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:28,728 INFO L85 PathProgramCache]: Analyzing trace with hash 288279000, now seen corresponding path program 1 times [2022-11-02 21:07:28,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:28,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472206452] [2022-11-02 21:07:28,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:28,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:28,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 21:07:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:28,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 21:07:28,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:28,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:07:28,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:28,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472206452] [2022-11-02 21:07:28,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472206452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:28,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:28,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:07:28,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550475050] [2022-11-02 21:07:28,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:28,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:07:28,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:28,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:07:28,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:28,892 INFO L87 Difference]: Start difference. First operand 422 states and 545 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:07:28,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:28,973 INFO L93 Difference]: Finished difference Result 932 states and 1242 transitions. [2022-11-02 21:07:28,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:07:28,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2022-11-02 21:07:28,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:28,979 INFO L225 Difference]: With dead ends: 932 [2022-11-02 21:07:28,979 INFO L226 Difference]: Without dead ends: 518 [2022-11-02 21:07:28,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:28,983 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 40 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:28,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 371 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:28,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-11-02 21:07:29,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 434. [2022-11-02 21:07:29,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 342 states have (on average 1.2894736842105263) internal successors, (441), 364 states have internal predecessors, (441), 50 states have call successors, (50), 46 states have call predecessors, (50), 41 states have return successors, (66), 45 states have call predecessors, (66), 50 states have call successors, (66) [2022-11-02 21:07:29,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 557 transitions. [2022-11-02 21:07:29,054 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 557 transitions. Word has length 47 [2022-11-02 21:07:29,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:29,054 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 557 transitions. [2022-11-02 21:07:29,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:07:29,055 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 557 transitions. [2022-11-02 21:07:29,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-02 21:07:29,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:29,057 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:29,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:07:29,057 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:29,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:29,058 INFO L85 PathProgramCache]: Analyzing trace with hash 428827610, now seen corresponding path program 1 times [2022-11-02 21:07:29,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:29,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712800591] [2022-11-02 21:07:29,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:29,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:29,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 21:07:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:29,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 21:07:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:07:29,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:29,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712800591] [2022-11-02 21:07:29,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712800591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:29,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:29,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:07:29,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801124579] [2022-11-02 21:07:29,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:29,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:07:29,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:29,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:07:29,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:07:29,179 INFO L87 Difference]: Start difference. First operand 434 states and 557 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:07:29,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:29,278 INFO L93 Difference]: Finished difference Result 828 states and 1074 transitions. [2022-11-02 21:07:29,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:29,278 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2022-11-02 21:07:29,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:29,282 INFO L225 Difference]: With dead ends: 828 [2022-11-02 21:07:29,282 INFO L226 Difference]: Without dead ends: 402 [2022-11-02 21:07:29,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:29,288 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 82 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:29,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 412 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:29,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-11-02 21:07:29,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 352. [2022-11-02 21:07:29,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 276 states have (on average 1.2681159420289856) internal successors, (350), 294 states have internal predecessors, (350), 40 states have call successors, (40), 38 states have call predecessors, (40), 35 states have return successors, (47), 37 states have call predecessors, (47), 40 states have call successors, (47) [2022-11-02 21:07:29,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 437 transitions. [2022-11-02 21:07:29,336 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 437 transitions. Word has length 47 [2022-11-02 21:07:29,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:29,337 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 437 transitions. [2022-11-02 21:07:29,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:07:29,337 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 437 transitions. [2022-11-02 21:07:29,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 21:07:29,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:29,339 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:29,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:07:29,339 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:29,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:29,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1269900610, now seen corresponding path program 1 times [2022-11-02 21:07:29,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:29,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785965447] [2022-11-02 21:07:29,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:29,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:29,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:07:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:29,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:07:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:29,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-02 21:07:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:29,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:07:29,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:29,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785965447] [2022-11-02 21:07:29,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785965447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:29,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:29,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:07:29,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93202609] [2022-11-02 21:07:29,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:29,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:07:29,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:29,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:07:29,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:07:29,611 INFO L87 Difference]: Start difference. First operand 352 states and 437 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 21:07:30,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:30,384 INFO L93 Difference]: Finished difference Result 1316 states and 1685 transitions. [2022-11-02 21:07:30,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 21:07:30,385 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2022-11-02 21:07:30,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:30,392 INFO L225 Difference]: With dead ends: 1316 [2022-11-02 21:07:30,393 INFO L226 Difference]: Without dead ends: 972 [2022-11-02 21:07:30,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=923, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 21:07:30,398 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 243 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:30,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 667 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:07:30,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2022-11-02 21:07:30,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 832. [2022-11-02 21:07:30,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 651 states have (on average 1.2242703533026114) internal successors, (797), 696 states have internal predecessors, (797), 96 states have call successors, (96), 76 states have call predecessors, (96), 84 states have return successors, (136), 90 states have call predecessors, (136), 96 states have call successors, (136) [2022-11-02 21:07:30,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1029 transitions. [2022-11-02 21:07:30,517 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1029 transitions. Word has length 51 [2022-11-02 21:07:30,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:30,517 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1029 transitions. [2022-11-02 21:07:30,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 21:07:30,518 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1029 transitions. [2022-11-02 21:07:30,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-02 21:07:30,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:30,521 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:30,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:07:30,522 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:30,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:30,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2125261563, now seen corresponding path program 1 times [2022-11-02 21:07:30,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:30,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415096345] [2022-11-02 21:07:30,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:30,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:30,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:07:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:30,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:07:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:30,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:07:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:30,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:07:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:30,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-02 21:07:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:30,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 21:07:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:30,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-02 21:07:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:30,657 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 21:07:30,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:30,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415096345] [2022-11-02 21:07:30,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415096345] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:07:30,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508219928] [2022-11-02 21:07:30,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:30,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:07:30,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:30,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:07:30,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:07:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:30,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:07:30,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:07:30,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:30,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508219928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:30,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:07:30,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2022-11-02 21:07:30,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075669557] [2022-11-02 21:07:30,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:30,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:07:30,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:30,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:07:30,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:07:30,948 INFO L87 Difference]: Start difference. First operand 832 states and 1029 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:07:31,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:31,084 INFO L93 Difference]: Finished difference Result 1236 states and 1555 transitions. [2022-11-02 21:07:31,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:07:31,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 83 [2022-11-02 21:07:31,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:31,091 INFO L225 Difference]: With dead ends: 1236 [2022-11-02 21:07:31,091 INFO L226 Difference]: Without dead ends: 1234 [2022-11-02 21:07:31,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:07:31,093 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 45 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:31,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 167 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:31,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-11-02 21:07:31,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 922. [2022-11-02 21:07:31,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 719 states have (on average 1.2364394993045897) internal successors, (889), 770 states have internal predecessors, (889), 106 states have call successors, (106), 86 states have call predecessors, (106), 96 states have return successors, (160), 100 states have call predecessors, (160), 106 states have call successors, (160) [2022-11-02 21:07:31,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1155 transitions. [2022-11-02 21:07:31,221 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1155 transitions. Word has length 83 [2022-11-02 21:07:31,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:31,221 INFO L495 AbstractCegarLoop]: Abstraction has 922 states and 1155 transitions. [2022-11-02 21:07:31,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:07:31,222 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1155 transitions. [2022-11-02 21:07:31,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-02 21:07:31,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:31,226 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:31,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:31,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 21:07:31,451 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:31,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:31,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1659587018, now seen corresponding path program 1 times [2022-11-02 21:07:31,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:31,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057285130] [2022-11-02 21:07:31,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:31,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:31,493 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:07:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:31,588 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:07:31,588 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:07:31,590 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:07:31,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:07:31,595 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:31,599 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:07:31,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:07:31 BoogieIcfgContainer [2022-11-02 21:07:31,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:07:31,720 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:07:31,720 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:07:31,720 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:07:31,720 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:26" (3/4) ... [2022-11-02 21:07:31,722 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-02 21:07:31,852 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 21:07:31,852 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:07:31,853 INFO L158 Benchmark]: Toolchain (without parser) took 6666.20ms. Allocated memory was 138.4MB in the beginning and 205.5MB in the end (delta: 67.1MB). Free memory was 100.7MB in the beginning and 96.9MB in the end (delta: 3.8MB). Peak memory consumption was 71.9MB. Max. memory is 16.1GB. [2022-11-02 21:07:31,854 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 138.4MB. Free memory was 118.1MB in the beginning and 118.0MB in the end (delta: 93.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:07:31,854 INFO L158 Benchmark]: CACSL2BoogieTranslator took 477.57ms. Allocated memory is still 138.4MB. Free memory was 100.5MB in the beginning and 106.0MB in the end (delta: -5.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 21:07:31,854 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.12ms. Allocated memory is still 138.4MB. Free memory was 106.0MB in the beginning and 103.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:07:31,855 INFO L158 Benchmark]: Boogie Preprocessor took 66.89ms. Allocated memory is still 138.4MB. Free memory was 103.5MB in the beginning and 101.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:07:31,855 INFO L158 Benchmark]: RCFGBuilder took 592.16ms. Allocated memory is still 138.4MB. Free memory was 101.8MB in the beginning and 83.3MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-02 21:07:31,856 INFO L158 Benchmark]: TraceAbstraction took 5300.24ms. Allocated memory was 138.4MB in the beginning and 205.5MB in the end (delta: 67.1MB). Free memory was 82.9MB in the beginning and 106.4MB in the end (delta: -23.5MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. [2022-11-02 21:07:31,856 INFO L158 Benchmark]: Witness Printer took 133.02ms. Allocated memory is still 205.5MB. Free memory was 106.4MB in the beginning and 96.9MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 21:07:31,859 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 138.4MB. Free memory was 118.1MB in the beginning and 118.0MB in the end (delta: 93.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 477.57ms. Allocated memory is still 138.4MB. Free memory was 100.5MB in the beginning and 106.0MB in the end (delta: -5.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.12ms. Allocated memory is still 138.4MB. Free memory was 106.0MB in the beginning and 103.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.89ms. Allocated memory is still 138.4MB. Free memory was 103.5MB in the beginning and 101.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 592.16ms. Allocated memory is still 138.4MB. Free memory was 101.8MB in the beginning and 83.3MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 5300.24ms. Allocated memory was 138.4MB in the beginning and 205.5MB in the end (delta: 67.1MB). Free memory was 82.9MB in the beginning and 106.4MB in the end (delta: -23.5MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. * Witness Printer took 133.02ms. Allocated memory is still 205.5MB. Free memory was 106.4MB in the beginning and 96.9MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 956]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L320] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L517] int cleanupTimeShifts = 4; [L658] int methAndRunningLastTime ; [L767] int pumpRunning = 0; [L768] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L598] int retValue_acc ; [L599] int tmp ; [L603] FCALL select_helpers() [L604] FCALL select_features() [L605] CALL, EXPR valid_product() [L647] int retValue_acc ; [L650] retValue_acc = 1 [L651] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L605] RET, EXPR valid_product() [L605] tmp = valid_product() [L607] COND TRUE \read(tmp) [L609] FCALL setup() [L610] CALL runTest() [L588] CALL __utac_acc__Specification2_spec__1() [L663] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L588] RET __utac_acc__Specification2_spec__1() [L589] CALL test() [L699] int splverifierCounter ; [L700] int tmp ; [L701] int tmp___0 ; [L702] int tmp___1 ; [L703] int tmp___2 ; [L706] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L708] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L710] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L716] tmp = __VERIFIER_nondet_int() [L718] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L720] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L75] COND TRUE waterLevel < 2 [L76] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L720] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L726] tmp___0 = __VERIFIER_nondet_int() [L728] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, waterLevel=2] [L736] tmp___2 = __VERIFIER_nondet_int() [L738] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=-2, waterLevel=2] [L753] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L774] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L781] COND TRUE \read(systemActive) [L783] CALL processEnvironment() [L803] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L806] COND TRUE ! pumpRunning [L808] CALL, EXPR isHighWaterLevel() [L918] int retValue_acc ; [L919] int tmp ; [L920] int tmp___0 ; [L924] CALL, EXPR isHighWaterSensorDry() [L137] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L140] COND FALSE !(waterLevel < 2) [L144] retValue_acc = 0 [L145] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L924] RET, EXPR isHighWaterSensorDry() [L924] tmp = isHighWaterSensorDry() [L926] COND FALSE !(\read(tmp)) [L929] tmp___0 = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L931] retValue_acc = tmp___0 [L932] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L808] RET, EXPR isHighWaterLevel() [L808] tmp = isHighWaterLevel() [L810] COND TRUE \read(tmp) [L812] CALL activatePump() [L837] int tmp ; [L841] CALL, EXPR isMethaneAlarm() [L862] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L866] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L866] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L866] retValue_acc = isMethaneLevelCritical() [L868] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L841] RET, EXPR isMethaneAlarm() [L841] tmp = isMethaneAlarm() [L843] COND FALSE !(\read(tmp)) [L847] CALL activatePump__wrappee__highWaterSensor() [L831] pumpRunning = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L847] RET activatePump__wrappee__highWaterSensor() [L812] RET activatePump() [L783] RET processEnvironment() [L789] CALL __utac_acc__Specification2_spec__2() [L668] int tmp ; [L669] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L673] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=2] [L673] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L673] tmp = isMethaneLevelCritical() [L675] COND FALSE !(\read(tmp)) [L691] methAndRunningLastTime = 0 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L789] RET __utac_acc__Specification2_spec__2() [L753] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=-2, waterLevel=2] [L708] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=-2, waterLevel=2] [L710] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=-2, waterLevel=2] [L716] tmp = __VERIFIER_nondet_int() [L718] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=2] [L726] tmp___0 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=-2, waterLevel=2] [L730] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L87] COND FALSE !(\read(methaneLevelCritical)) [L90] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L730] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=-2, waterLevel=2] [L736] tmp___2 = __VERIFIER_nondet_int() [L738] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=-3, waterLevel=2] [L753] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L774] COND TRUE \read(pumpRunning) [L776] CALL lowerWaterLevel() [L63] COND TRUE waterLevel > 0 [L64] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L776] RET lowerWaterLevel() [L781] COND TRUE \read(systemActive) [L783] CALL processEnvironment() [L803] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L806] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L821] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L783] RET processEnvironment() [L789] CALL __utac_acc__Specification2_spec__2() [L668] int tmp ; [L669] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L673] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L673] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L673] tmp = isMethaneLevelCritical() [L675] COND TRUE \read(tmp) [L677] CALL, EXPR isPumpRunning() [L873] int retValue_acc ; [L876] retValue_acc = pumpRunning [L877] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L677] RET, EXPR isPumpRunning() [L677] tmp___0 = isPumpRunning() [L679] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L680] COND FALSE !(\read(methAndRunningLastTime)) [L685] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L789] RET __utac_acc__Specification2_spec__2() [L753] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=-3, waterLevel=1] [L708] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=-3, waterLevel=1] [L710] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=-3, waterLevel=1] [L716] tmp = __VERIFIER_nondet_int() [L718] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=-3, waterLevel=1] [L726] tmp___0 = __VERIFIER_nondet_int() [L728] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-3, waterLevel=1] [L736] tmp___2 = __VERIFIER_nondet_int() [L738] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-4, waterLevel=1] [L753] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L774] COND TRUE \read(pumpRunning) [L776] CALL lowerWaterLevel() [L63] COND TRUE waterLevel > 0 [L64] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L776] RET lowerWaterLevel() [L781] COND TRUE \read(systemActive) [L783] CALL processEnvironment() [L803] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L806] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L821] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L783] RET processEnvironment() [L789] CALL __utac_acc__Specification2_spec__2() [L668] int tmp ; [L669] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L673] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L673] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L673] tmp = isMethaneLevelCritical() [L675] COND TRUE \read(tmp) [L677] CALL, EXPR isPumpRunning() [L873] int retValue_acc ; [L876] retValue_acc = pumpRunning [L877] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L677] RET, EXPR isPumpRunning() [L677] tmp___0 = isPumpRunning() [L679] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=0] [L680] COND TRUE \read(methAndRunningLastTime) [L682] CALL __automaton_fail() [L956] reach_error() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 850 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 833 mSDsluCounter, 2909 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1956 mSDsCounter, 122 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 535 IncrementalHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 122 mSolverCounterUnsat, 953 mSDtfsCounter, 535 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 206 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=922occurred in iteration=10, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 615 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 622 NumberOfCodeBlocks, 622 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 497 ConstructedInterpolants, 0 QuantifiedInterpolants, 867 SizeOfPredicates, 1 NumberOfNonLiveVariables, 441 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 63/64 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-02 21:07:31,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e34ee32-774f-4a14-b158-c11ac2e21bc6/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE