./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 da786641c6f5791cd76909be3af2b92112e50156e91d6775689240586eed4e85 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:00:33,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:00:33,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:00:34,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:00:34,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:00:34,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:00:34,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:00:34,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:00:34,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:00:34,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:00:34,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:00:34,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:00:34,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:00:34,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:00:34,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:00:34,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:00:34,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:00:34,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:00:34,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:00:34,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:00:34,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:00:34,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:00:34,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:00:34,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:00:34,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:00:34,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:00:34,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:00:34,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:00:34,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:00:34,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:00:34,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:00:34,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:00:34,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:00:34,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:00:34,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:00:34,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:00:34,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:00:34,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:00:34,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:00:34,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:00:34,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:00:34,083 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:00:34,120 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:00:34,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:00:34,121 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:00:34,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:00:34,122 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:00:34,123 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:00:34,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:00:34,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:00:34,124 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:00:34,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:00:34,125 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:00:34,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:00:34,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:00:34,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:00:34,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:00:34,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:00:34,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:00:34,126 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:00:34,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:00:34,127 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:00:34,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:00:34,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:00:34,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:00:34,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:00:34,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:00:34,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:00:34,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:00:34,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:00:34,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:00:34,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:00:34,129 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:00:34,129 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:00:34,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:00:34,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:00:34,130 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da786641c6f5791cd76909be3af2b92112e50156e91d6775689240586eed4e85 [2021-12-16 01:00:34,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:00:34,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:00:34,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:00:34,419 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:00:34,420 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:00:34,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c [2021-12-16 01:00:34,487 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3913ff9b3/041bcfce82a24f8d9d5bcfaa678dfda3/FLAG3dc29230f [2021-12-16 01:00:34,977 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:00:34,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c [2021-12-16 01:00:34,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3913ff9b3/041bcfce82a24f8d9d5bcfaa678dfda3/FLAG3dc29230f [2021-12-16 01:00:35,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3913ff9b3/041bcfce82a24f8d9d5bcfaa678dfda3 [2021-12-16 01:00:35,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:00:35,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:00:35,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:00:35,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:00:35,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:00:35,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:00:35" (1/1) ... [2021-12-16 01:00:35,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b316134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:00:35, skipping insertion in model container [2021-12-16 01:00:35,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:00:35" (1/1) ... [2021-12-16 01:00:35,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:00:35,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:00:35,813 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c[15806,15819] [2021-12-16 01:00:35,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:00:35,841 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:00:35,908 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c[15806,15819] [2021-12-16 01:00:35,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:00:35,929 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:00:35,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:00:35 WrapperNode [2021-12-16 01:00:35,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:00:35,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:00:35,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:00:35,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:00:35,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:00:35" (1/1) ... [2021-12-16 01:00:35,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:00:35" (1/1) ... [2021-12-16 01:00:35,991 INFO L137 Inliner]: procedures = 55, calls = 154, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 256 [2021-12-16 01:00:35,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:00:35,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:00:35,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:00:35,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:00:36,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:00:35" (1/1) ... [2021-12-16 01:00:36,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:00:35" (1/1) ... [2021-12-16 01:00:36,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:00:35" (1/1) ... [2021-12-16 01:00:36,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:00:35" (1/1) ... [2021-12-16 01:00:36,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:00:35" (1/1) ... [2021-12-16 01:00:36,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:00:35" (1/1) ... [2021-12-16 01:00:36,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:00:35" (1/1) ... [2021-12-16 01:00:36,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:00:36,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:00:36,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:00:36,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:00:36,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:00:35" (1/1) ... [2021-12-16 01:00:36,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:00:36,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:00:36,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 01:00:36,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 01:00:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:00:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-12-16 01:00:36,109 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-12-16 01:00:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-16 01:00:36,109 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-16 01:00:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-16 01:00:36,109 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-16 01:00:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-12-16 01:00:36,110 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-12-16 01:00:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:00:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-12-16 01:00:36,110 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-12-16 01:00:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:00:36,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:00:36,194 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:00:36,196 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:00:36,511 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:00:36,517 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:00:36,518 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 01:00:36,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:00:36 BoogieIcfgContainer [2021-12-16 01:00:36,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:00:36,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:00:36,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:00:36,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:00:36,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:00:35" (1/3) ... [2021-12-16 01:00:36,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bdc31b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:00:36, skipping insertion in model container [2021-12-16 01:00:36,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:00:35" (2/3) ... [2021-12-16 01:00:36,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bdc31b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:00:36, skipping insertion in model container [2021-12-16 01:00:36,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:00:36" (3/3) ... [2021-12-16 01:00:36,529 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2021-12-16 01:00:36,534 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:00:36,535 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 01:00:36,586 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:00:36,593 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 01:00:36,593 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 01:00:36,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 64 states have (on average 1.390625) internal successors, (89), 70 states have internal predecessors, (89), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-16 01:00:36,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 01:00:36,624 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:00:36,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:00:36,625 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:00:36,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:00:36,630 INFO L85 PathProgramCache]: Analyzing trace with hash 512419975, now seen corresponding path program 1 times [2021-12-16 01:00:36,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:00:36,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785702326] [2021-12-16 01:00:36,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:00:36,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:00:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:00:36,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:00:36,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:00:36,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785702326] [2021-12-16 01:00:36,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785702326] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:00:36,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:00:36,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 01:00:36,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99389983] [2021-12-16 01:00:36,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:00:36,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 01:00:36,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:00:36,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 01:00:36,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 01:00:36,904 INFO L87 Difference]: Start difference. First operand has 79 states, 64 states have (on average 1.390625) internal successors, (89), 70 states have internal predecessors, (89), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:00:36,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:00:36,944 INFO L93 Difference]: Finished difference Result 150 states and 205 transitions. [2021-12-16 01:00:36,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 01:00:36,946 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-16 01:00:36,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:00:36,958 INFO L225 Difference]: With dead ends: 150 [2021-12-16 01:00:36,958 INFO L226 Difference]: Without dead ends: 70 [2021-12-16 01:00:36,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 01:00:36,966 INFO L933 BasicCegarLoop]: 99 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, 99 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 [2021-12-16 01:00:36,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:00:36,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-16 01:00:37,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-12-16 01:00:37,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 62 states have internal predecessors, (75), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-16 01:00:37,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2021-12-16 01:00:37,012 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 19 [2021-12-16 01:00:37,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:00:37,013 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2021-12-16 01:00:37,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:00:37,014 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2021-12-16 01:00:37,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-16 01:00:37,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:00:37,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:00:37,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 01:00:37,019 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:00:37,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:00:37,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1475209998, now seen corresponding path program 1 times [2021-12-16 01:00:37,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:00:37,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625242395] [2021-12-16 01:00:37,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:00:37,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:00:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:00:37,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:00:37,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:00:37,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625242395] [2021-12-16 01:00:37,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625242395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:00:37,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:00:37,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:00:37,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339831035] [2021-12-16 01:00:37,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:00:37,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:00:37,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:00:37,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:00:37,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:00:37,125 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:00:37,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:00:37,142 INFO L93 Difference]: Finished difference Result 101 states and 130 transitions. [2021-12-16 01:00:37,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:00:37,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-16 01:00:37,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:00:37,146 INFO L225 Difference]: With dead ends: 101 [2021-12-16 01:00:37,147 INFO L226 Difference]: Without dead ends: 61 [2021-12-16 01:00:37,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:00:37,149 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 18 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 132 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 [2021-12-16 01:00:37,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 132 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:00:37,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-12-16 01:00:37,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-12-16 01:00:37,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 56 states have internal predecessors, (68), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-16 01:00:37,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2021-12-16 01:00:37,164 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 20 [2021-12-16 01:00:37,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:00:37,165 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2021-12-16 01:00:37,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:00:37,165 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2021-12-16 01:00:37,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-16 01:00:37,166 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:00:37,169 INFO L514 BasicCegarLoop]: 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] [2021-12-16 01:00:37,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 01:00:37,170 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:00:37,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:00:37,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1091174008, now seen corresponding path program 1 times [2021-12-16 01:00:37,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:00:37,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297614603] [2021-12-16 01:00:37,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:00:37,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:00:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:00:37,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:00:37,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:00:37,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297614603] [2021-12-16 01:00:37,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297614603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:00:37,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:00:37,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:00:37,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263779039] [2021-12-16 01:00:37,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:00:37,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:00:37,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:00:37,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:00:37,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:00:37,294 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:00:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:00:37,492 INFO L93 Difference]: Finished difference Result 218 states and 292 transitions. [2021-12-16 01:00:37,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 01:00:37,494 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-16 01:00:37,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:00:37,496 INFO L225 Difference]: With dead ends: 218 [2021-12-16 01:00:37,498 INFO L226 Difference]: Without dead ends: 164 [2021-12-16 01:00:37,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:00:37,503 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 234 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:00:37,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 396 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:00:37,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-12-16 01:00:37,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 138. [2021-12-16 01:00:37,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 113 states have (on average 1.3716814159292035) internal successors, (155), 124 states have internal predecessors, (155), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (14), 11 states have call predecessors, (14), 13 states have call successors, (14) [2021-12-16 01:00:37,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 182 transitions. [2021-12-16 01:00:37,535 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 182 transitions. Word has length 25 [2021-12-16 01:00:37,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:00:37,535 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 182 transitions. [2021-12-16 01:00:37,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:00:37,536 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 182 transitions. [2021-12-16 01:00:37,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-16 01:00:37,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:00:37,541 INFO L514 BasicCegarLoop]: 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] [2021-12-16 01:00:37,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 01:00:37,542 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:00:37,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:00:37,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1563750239, now seen corresponding path program 1 times [2021-12-16 01:00:37,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:00:37,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117980107] [2021-12-16 01:00:37,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:00:37,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:00:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:00:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:00:37,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:00:37,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117980107] [2021-12-16 01:00:37,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117980107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:00:37,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:00:37,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:00:37,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772575608] [2021-12-16 01:00:37,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:00:37,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:00:37,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:00:37,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:00:37,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:00:37,640 INFO L87 Difference]: Start difference. First operand 138 states and 182 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:00:37,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:00:37,747 INFO L93 Difference]: Finished difference Result 383 states and 527 transitions. [2021-12-16 01:00:37,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:00:37,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-16 01:00:37,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:00:37,753 INFO L225 Difference]: With dead ends: 383 [2021-12-16 01:00:37,754 INFO L226 Difference]: Without dead ends: 252 [2021-12-16 01:00:37,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:00:37,761 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 49 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:00:37,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 297 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:00:37,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-12-16 01:00:37,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-12-16 01:00:37,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 206 states have (on average 1.3398058252427185) internal successors, (276), 224 states have internal predecessors, (276), 26 states have call successors, (26), 22 states have call predecessors, (26), 19 states have return successors, (32), 19 states have call predecessors, (32), 26 states have call successors, (32) [2021-12-16 01:00:37,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 334 transitions. [2021-12-16 01:00:37,790 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 334 transitions. Word has length 28 [2021-12-16 01:00:37,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:00:37,791 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 334 transitions. [2021-12-16 01:00:37,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:00:37,791 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 334 transitions. [2021-12-16 01:00:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-16 01:00:37,794 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:00:37,794 INFO L514 BasicCegarLoop]: 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] [2021-12-16 01:00:37,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 01:00:37,795 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:00:37,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:00:37,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1754867228, now seen corresponding path program 1 times [2021-12-16 01:00:37,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:00:37,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922991924] [2021-12-16 01:00:37,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:00:37,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:00:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:00:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:00:37,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:00:37,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922991924] [2021-12-16 01:00:37,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922991924] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:00:37,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:00:37,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 01:00:37,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880239010] [2021-12-16 01:00:37,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:00:37,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:00:37,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:00:37,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:00:37,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:00:37,834 INFO L87 Difference]: Start difference. First operand 252 states and 334 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:00:37,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:00:37,863 INFO L93 Difference]: Finished difference Result 614 states and 833 transitions. [2021-12-16 01:00:37,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:00:37,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-16 01:00:37,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:00:37,867 INFO L225 Difference]: With dead ends: 614 [2021-12-16 01:00:37,867 INFO L226 Difference]: Without dead ends: 369 [2021-12-16 01:00:37,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:00:37,869 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 49 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 124 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 [2021-12-16 01:00:37,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 124 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:00:37,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-12-16 01:00:37,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 367. [2021-12-16 01:00:37,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 299 states have (on average 1.3043478260869565) internal successors, (390), 321 states have internal predecessors, (390), 36 states have call successors, (36), 36 states have call predecessors, (36), 31 states have return successors, (52), 31 states have call predecessors, (52), 36 states have call successors, (52) [2021-12-16 01:00:37,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 478 transitions. [2021-12-16 01:00:37,928 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 478 transitions. Word has length 30 [2021-12-16 01:00:37,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:00:37,929 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 478 transitions. [2021-12-16 01:00:37,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:00:37,931 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 478 transitions. [2021-12-16 01:00:37,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-16 01:00:37,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:00:37,933 INFO L514 BasicCegarLoop]: 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] [2021-12-16 01:00:37,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 01:00:37,933 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:00:37,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:00:37,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1515193275, now seen corresponding path program 1 times [2021-12-16 01:00:37,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:00:37,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468873728] [2021-12-16 01:00:37,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:00:37,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:00:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:00:38,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 01:00:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:00:38,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:00:38,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:00:38,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468873728] [2021-12-16 01:00:38,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468873728] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:00:38,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:00:38,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 01:00:38,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080931368] [2021-12-16 01:00:38,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:00:38,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:00:38,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:00:38,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:00:38,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:00:38,013 INFO L87 Difference]: Start difference. First operand 367 states and 478 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-12-16 01:00:38,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:00:38,145 INFO L93 Difference]: Finished difference Result 478 states and 619 transitions. [2021-12-16 01:00:38,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 01:00:38,146 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 32 [2021-12-16 01:00:38,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:00:38,149 INFO L225 Difference]: With dead ends: 478 [2021-12-16 01:00:38,149 INFO L226 Difference]: Without dead ends: 476 [2021-12-16 01:00:38,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-16 01:00:38,150 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 132 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:00:38,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 357 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:00:38,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-12-16 01:00:38,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 447. [2021-12-16 01:00:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 366 states have (on average 1.284153005464481) internal successors, (470), 401 states have internal predecessors, (470), 40 states have call successors, (40), 36 states have call predecessors, (40), 40 states have return successors, (65), 35 states have call predecessors, (65), 40 states have call successors, (65) [2021-12-16 01:00:38,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 575 transitions. [2021-12-16 01:00:38,177 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 575 transitions. Word has length 32 [2021-12-16 01:00:38,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:00:38,177 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 575 transitions. [2021-12-16 01:00:38,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-12-16 01:00:38,178 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 575 transitions. [2021-12-16 01:00:38,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-16 01:00:38,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:00:38,179 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:00:38,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 01:00:38,179 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:00:38,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:00:38,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1654317802, now seen corresponding path program 1 times [2021-12-16 01:00:38,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:00:38,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036790514] [2021-12-16 01:00:38,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:00:38,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:00:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:00:38,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 01:00:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:00:38,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:00:38,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:00:38,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036790514] [2021-12-16 01:00:38,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036790514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:00:38,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:00:38,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:00:38,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791330474] [2021-12-16 01:00:38,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:00:38,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:00:38,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:00:38,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:00:38,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:00:38,238 INFO L87 Difference]: Start difference. First operand 447 states and 575 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 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) [2021-12-16 01:00:38,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:00:38,431 INFO L93 Difference]: Finished difference Result 1129 states and 1480 transitions. [2021-12-16 01:00:38,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 01:00:38,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 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 42 [2021-12-16 01:00:38,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:00:38,438 INFO L225 Difference]: With dead ends: 1129 [2021-12-16 01:00:38,438 INFO L226 Difference]: Without dead ends: 689 [2021-12-16 01:00:38,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-12-16 01:00:38,441 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 227 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:00:38,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 412 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:00:38,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2021-12-16 01:00:38,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 455. [2021-12-16 01:00:38,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 374 states have (on average 1.2727272727272727) internal successors, (476), 409 states have internal predecessors, (476), 40 states have call successors, (40), 36 states have call predecessors, (40), 40 states have return successors, (65), 35 states have call predecessors, (65), 40 states have call successors, (65) [2021-12-16 01:00:38,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 581 transitions. [2021-12-16 01:00:38,495 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 581 transitions. Word has length 42 [2021-12-16 01:00:38,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:00:38,497 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 581 transitions. [2021-12-16 01:00:38,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 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) [2021-12-16 01:00:38,497 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 581 transitions. [2021-12-16 01:00:38,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-16 01:00:38,499 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:00:38,500 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:00:38,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 01:00:38,500 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:00:38,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:00:38,501 INFO L85 PathProgramCache]: Analyzing trace with hash -633249448, now seen corresponding path program 1 times [2021-12-16 01:00:38,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:00:38,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797721103] [2021-12-16 01:00:38,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:00:38,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:00:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:00:38,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 01:00:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:00:38,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:00:38,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:00:38,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797721103] [2021-12-16 01:00:38,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797721103] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:00:38,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:00:38,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 01:00:38,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99641627] [2021-12-16 01:00:38,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:00:38,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:00:38,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:00:38,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:00:38,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:00:38,573 INFO L87 Difference]: Start difference. First operand 455 states and 581 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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) [2021-12-16 01:00:38,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:00:38,719 INFO L93 Difference]: Finished difference Result 928 states and 1195 transitions. [2021-12-16 01:00:38,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 01:00:38,720 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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 42 [2021-12-16 01:00:38,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:00:38,723 INFO L225 Difference]: With dead ends: 928 [2021-12-16 01:00:38,723 INFO L226 Difference]: Without dead ends: 480 [2021-12-16 01:00:38,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-16 01:00:38,725 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 117 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:00:38,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 372 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:00:38,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-12-16 01:00:38,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 398. [2021-12-16 01:00:38,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 329 states have (on average 1.2583586626139818) internal successors, (414), 358 states have internal predecessors, (414), 34 states have call successors, (34), 30 states have call predecessors, (34), 34 states have return successors, (48), 31 states have call predecessors, (48), 34 states have call successors, (48) [2021-12-16 01:00:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 496 transitions. [2021-12-16 01:00:38,766 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 496 transitions. Word has length 42 [2021-12-16 01:00:38,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:00:38,770 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 496 transitions. [2021-12-16 01:00:38,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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) [2021-12-16 01:00:38,770 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 496 transitions. [2021-12-16 01:00:38,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-16 01:00:38,772 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:00:38,772 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:00:38,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 01:00:38,773 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:00:38,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:00:38,774 INFO L85 PathProgramCache]: Analyzing trace with hash 646504788, now seen corresponding path program 1 times [2021-12-16 01:00:38,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:00:38,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042909933] [2021-12-16 01:00:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:00:38,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:00:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:00:38,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 01:00:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:00:38,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:00:38,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:00:38,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042909933] [2021-12-16 01:00:38,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042909933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:00:38,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:00:38,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 01:00:38,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874962617] [2021-12-16 01:00:38,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:00:38,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:00:38,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:00:38,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:00:38,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:00:38,845 INFO L87 Difference]: Start difference. First operand 398 states and 496 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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) [2021-12-16 01:00:39,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:00:39,052 INFO L93 Difference]: Finished difference Result 880 states and 1164 transitions. [2021-12-16 01:00:39,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 01:00:39,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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 42 [2021-12-16 01:00:39,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:00:39,057 INFO L225 Difference]: With dead ends: 880 [2021-12-16 01:00:39,061 INFO L226 Difference]: Without dead ends: 587 [2021-12-16 01:00:39,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:00:39,064 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 104 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:00:39,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 461 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:00:39,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-12-16 01:00:39,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 585. [2021-12-16 01:00:39,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 479 states have (on average 1.2379958246346556) internal successors, (593), 515 states have internal predecessors, (593), 53 states have call successors, (53), 47 states have call predecessors, (53), 52 states have return successors, (94), 50 states have call predecessors, (94), 53 states have call successors, (94) [2021-12-16 01:00:39,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 740 transitions. [2021-12-16 01:00:39,134 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 740 transitions. Word has length 42 [2021-12-16 01:00:39,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:00:39,134 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 740 transitions. [2021-12-16 01:00:39,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 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) [2021-12-16 01:00:39,135 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 740 transitions. [2021-12-16 01:00:39,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-16 01:00:39,137 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:00:39,137 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-12-16 01:00:39,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 01:00:39,138 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:00:39,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:00:39,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1851090597, now seen corresponding path program 1 times [2021-12-16 01:00:39,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:00:39,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617410917] [2021-12-16 01:00:39,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:00:39,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:00:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:00:39,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 01:00:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:00:39,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:00:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:00:39,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 01:00:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:00:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:00:39,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:00:39,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617410917] [2021-12-16 01:00:39,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617410917] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:00:39,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223306795] [2021-12-16 01:00:39,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:00:39,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:00:39,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:00:39,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:00:39,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 01:00:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:00:39,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 01:00:39,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:00:39,602 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:00:39,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 01:00:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:00:39,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223306795] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 01:00:39,770 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 01:00:39,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 8 [2021-12-16 01:00:39,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072779557] [2021-12-16 01:00:39,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 01:00:39,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 01:00:39,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:00:39,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 01:00:39,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:00:39,772 INFO L87 Difference]: Start difference. First operand 585 states and 740 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 01:00:40,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:00:40,128 INFO L93 Difference]: Finished difference Result 1351 states and 1796 transitions. [2021-12-16 01:00:40,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-16 01:00:40,128 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 67 [2021-12-16 01:00:40,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:00:40,134 INFO L225 Difference]: With dead ends: 1351 [2021-12-16 01:00:40,135 INFO L226 Difference]: Without dead ends: 871 [2021-12-16 01:00:40,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:00:40,138 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 206 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:00:40,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 571 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:00:40,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2021-12-16 01:00:40,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 786. [2021-12-16 01:00:40,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 638 states have (on average 1.2413793103448276) internal successors, (792), 686 states have internal predecessors, (792), 74 states have call successors, (74), 66 states have call predecessors, (74), 73 states have return successors, (139), 66 states have call predecessors, (139), 74 states have call successors, (139) [2021-12-16 01:00:40,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1005 transitions. [2021-12-16 01:00:40,214 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1005 transitions. Word has length 67 [2021-12-16 01:00:40,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:00:40,216 INFO L470 AbstractCegarLoop]: Abstraction has 786 states and 1005 transitions. [2021-12-16 01:00:40,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 01:00:40,217 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1005 transitions. [2021-12-16 01:00:40,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-16 01:00:40,219 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:00:40,219 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:00:40,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 01:00:40,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-16 01:00:40,436 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:00:40,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:00:40,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2119771956, now seen corresponding path program 2 times [2021-12-16 01:00:40,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:00:40,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785019614] [2021-12-16 01:00:40,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:00:40,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:00:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 01:00:40,458 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 01:00:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 01:00:40,505 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 01:00:40,505 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-16 01:00:40,506 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-16 01:00:40,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 01:00:40,510 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:00:40,513 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 01:00:40,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 01:00:40 BoogieIcfgContainer [2021-12-16 01:00:40,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 01:00:40,581 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 01:00:40,581 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 01:00:40,582 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 01:00:40,582 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:00:36" (3/4) ... [2021-12-16 01:00:40,583 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-16 01:00:40,656 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 01:00:40,657 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 01:00:40,657 INFO L158 Benchmark]: Toolchain (without parser) took 5177.06ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 64.7MB in the beginning and 85.9MB in the end (delta: -21.2MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. [2021-12-16 01:00:40,658 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 96.5MB. Free memory was 53.6MB in the beginning and 53.5MB in the end (delta: 39.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 01:00:40,658 INFO L158 Benchmark]: CACSL2BoogieTranslator took 447.83ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 64.4MB in the beginning and 84.9MB in the end (delta: -20.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 01:00:40,658 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.17ms. Allocated memory is still 117.4MB. Free memory was 84.9MB in the beginning and 82.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 01:00:40,658 INFO L158 Benchmark]: Boogie Preprocessor took 47.13ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 80.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 01:00:40,659 INFO L158 Benchmark]: RCFGBuilder took 481.88ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 65.1MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-16 01:00:40,659 INFO L158 Benchmark]: TraceAbstraction took 4057.96ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 64.7MB in the beginning and 95.4MB in the end (delta: -30.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 01:00:40,659 INFO L158 Benchmark]: Witness Printer took 75.54ms. Allocated memory is still 142.6MB. Free memory was 95.4MB in the beginning and 85.9MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-16 01:00:40,661 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 96.5MB. Free memory was 53.6MB in the beginning and 53.5MB in the end (delta: 39.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 447.83ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 64.4MB in the beginning and 84.9MB in the end (delta: -20.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.17ms. Allocated memory is still 117.4MB. Free memory was 84.9MB in the beginning and 82.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.13ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 80.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 481.88ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 65.1MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4057.96ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 64.7MB in the beginning and 95.4MB in the end (delta: -30.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 75.54ms. Allocated memory is still 142.6MB. Free memory was 95.4MB in the beginning and 85.9MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. 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: 762]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L248] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L565] int pumpRunning = 0; [L566] int systemActive = 1; [L767] int cleanupTimeShifts = 4; [L863] int waterLevel = 1; [L864] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L840] int retValue_acc ; [L841] int tmp ; [L845] FCALL select_helpers() [L846] FCALL select_features() [L847] CALL, EXPR valid_product() [L474] int retValue_acc ; [L477] retValue_acc = 1 [L478] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L847] RET, EXPR valid_product() [L847] tmp = valid_product() [L849] COND TRUE \read(tmp) [L851] FCALL setup() [L852] CALL runTest() [L834] CALL test() [L490] int splverifierCounter ; [L491] int tmp ; [L492] int tmp___0 ; [L493] int tmp___1 ; [L494] int tmp___2 ; [L497] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L499] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L501] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L507] tmp = __VERIFIER_nondet_int() [L509] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L511] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L881] COND TRUE waterLevel < 2 [L882] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L511] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L517] tmp___0 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, waterLevel=2] [L527] tmp___2 = __VERIFIER_nondet_int() [L529] COND FALSE !(\read(tmp___2)) [L535] tmp___1 = __VERIFIER_nondet_int() [L537] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L546] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L572] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L579] COND TRUE \read(systemActive) [L581] CALL processEnvironment() [L601] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L604] COND TRUE ! pumpRunning [L606] CALL, EXPR isHighWaterLevel() [L716] int retValue_acc ; [L717] int tmp ; [L718] int tmp___0 ; [L722] CALL, EXPR isHighWaterSensorDry() [L943] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L946] COND FALSE !(waterLevel < 2) [L950] retValue_acc = 0 [L951] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L722] RET, EXPR isHighWaterSensorDry() [L722] tmp = isHighWaterSensorDry() [L724] COND FALSE !(\read(tmp)) [L727] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L729] retValue_acc = tmp___0 [L730] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L606] RET, EXPR isHighWaterLevel() [L606] tmp = isHighWaterLevel() [L608] COND TRUE \read(tmp) [L610] CALL activatePump() [L635] int tmp ; [L639] CALL, EXPR isMethaneAlarm() [L660] int retValue_acc ; [L664] CALL, EXPR isMethaneLevelCritical() [L902] int retValue_acc ; [L905] retValue_acc = methaneLevelCritical [L906] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L664] RET, EXPR isMethaneLevelCritical() [L664] retValue_acc = isMethaneLevelCritical() [L666] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L639] RET, EXPR isMethaneAlarm() [L639] tmp = isMethaneAlarm() [L641] COND FALSE !(\read(tmp)) [L645] CALL activatePump__wrappee__highWaterSensor() [L629] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L645] RET activatePump__wrappee__highWaterSensor() [L610] RET activatePump() [L581] RET processEnvironment() [L587] CALL __utac_acc__Specification4_spec__1() [L54] int tmp ; [L55] int tmp___0 ; [L59] CALL, EXPR getWaterLevel() [L934] int retValue_acc ; [L937] retValue_acc = waterLevel [L938] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L59] RET, EXPR getWaterLevel() [L59] tmp = getWaterLevel() [L61] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L587] RET __utac_acc__Specification4_spec__1() [L546] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L499] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L501] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L507] tmp = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L517] tmp___0 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L527] tmp___2 = __VERIFIER_nondet_int() [L529] COND FALSE !(\read(tmp___2)) [L535] tmp___1 = __VERIFIER_nondet_int() [L537] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L546] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L572] COND TRUE \read(pumpRunning) [L574] CALL lowerWaterLevel() [L869] COND TRUE waterLevel > 0 [L870] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L574] RET lowerWaterLevel() [L579] COND TRUE \read(systemActive) [L581] CALL processEnvironment() [L601] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L604] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L619] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L581] RET processEnvironment() [L587] CALL __utac_acc__Specification4_spec__1() [L54] int tmp ; [L55] int tmp___0 ; [L59] CALL, EXPR getWaterLevel() [L934] int retValue_acc ; [L937] retValue_acc = waterLevel [L938] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L59] RET, EXPR getWaterLevel() [L59] tmp = getWaterLevel() [L61] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L587] RET __utac_acc__Specification4_spec__1() [L546] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L499] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L501] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L507] tmp = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L517] tmp___0 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L527] tmp___2 = __VERIFIER_nondet_int() [L529] COND FALSE !(\read(tmp___2)) [L535] tmp___1 = __VERIFIER_nondet_int() [L537] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L546] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L572] COND TRUE \read(pumpRunning) [L574] CALL lowerWaterLevel() [L869] COND TRUE waterLevel > 0 [L870] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L574] RET lowerWaterLevel() [L579] COND TRUE \read(systemActive) [L581] CALL processEnvironment() [L601] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L604] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L619] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L581] RET processEnvironment() [L587] CALL __utac_acc__Specification4_spec__1() [L54] int tmp ; [L55] int tmp___0 ; [L59] CALL, EXPR getWaterLevel() [L934] int retValue_acc ; [L937] retValue_acc = waterLevel [L938] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L59] RET, EXPR getWaterLevel() [L59] tmp = getWaterLevel() [L61] COND TRUE tmp == 0 [L63] CALL, EXPR isPumpRunning() [L671] int retValue_acc ; [L674] retValue_acc = pumpRunning [L675] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L63] RET, EXPR isPumpRunning() [L63] tmp___0 = isPumpRunning() [L65] COND TRUE \read(tmp___0) [L67] CALL __automaton_fail() [L762] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.9s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1157 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1136 mSDsluCounter, 3221 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2315 mSDsCounter, 153 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 727 IncrementalHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 153 mSolverCounterUnsat, 906 mSDtfsCounter, 727 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 165 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=786occurred in iteration=10, InterpolantAutomatonStates: 79, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 460 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 506 NumberOfCodeBlocks, 506 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 469 ConstructedInterpolants, 0 QuantifiedInterpolants, 950 SizeOfPredicates, 4 NumberOfNonLiveVariables, 410 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 38/51 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! [2021-12-16 01:00:40,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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