./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array7_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/array-patterns/array7_pattern.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 85b55cdd1f26353e63ecc189ba28ba899672edc569fe3ef3f04470f2b5e667fa --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 10:50:35,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 10:50:35,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 10:50:35,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 10:50:35,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 10:50:35,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 10:50:35,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 10:50:35,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 10:50:35,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 10:50:35,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 10:50:35,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 10:50:35,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 10:50:35,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 10:50:35,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 10:50:35,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 10:50:35,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 10:50:35,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 10:50:35,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 10:50:35,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 10:50:35,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 10:50:35,805 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 10:50:35,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 10:50:35,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 10:50:35,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 10:50:35,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 10:50:35,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 10:50:35,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 10:50:35,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 10:50:35,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 10:50:35,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 10:50:35,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 10:50:35,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 10:50:35,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 10:50:35,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 10:50:35,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 10:50:35,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 10:50:35,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 10:50:35,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 10:50:35,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 10:50:35,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 10:50:35,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 10:50:35,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 10:50:35,828 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 10:50:35,857 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 10:50:35,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 10:50:35,858 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 10:50:35,858 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 10:50:35,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 10:50:35,875 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 10:50:35,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 10:50:35,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 10:50:35,876 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 10:50:35,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 10:50:35,877 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 10:50:35,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 10:50:35,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 10:50:35,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 10:50:35,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 10:50:35,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 10:50:35,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 10:50:35,879 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 10:50:35,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 10:50:35,879 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 10:50:35,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 10:50:35,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 10:50:35,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 10:50:35,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 10:50:35,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:50:35,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 10:50:35,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 10:50:35,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 10:50:35,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 10:50:35,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 10:50:35,881 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 10:50:35,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 10:50:35,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 10:50:35,882 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b55cdd1f26353e63ecc189ba28ba899672edc569fe3ef3f04470f2b5e667fa [2022-07-13 10:50:36,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 10:50:36,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 10:50:36,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 10:50:36,111 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 10:50:36,111 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 10:50:36,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array7_pattern.c [2022-07-13 10:50:36,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47ef0c1f4/82dac4f8307b48c9a5a69a513b09feb4/FLAGb56409041 [2022-07-13 10:50:36,539 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 10:50:36,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array7_pattern.c [2022-07-13 10:50:36,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47ef0c1f4/82dac4f8307b48c9a5a69a513b09feb4/FLAGb56409041 [2022-07-13 10:50:36,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47ef0c1f4/82dac4f8307b48c9a5a69a513b09feb4 [2022-07-13 10:50:36,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 10:50:36,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 10:50:36,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 10:50:36,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 10:50:36,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 10:50:36,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:50:36" (1/1) ... [2022-07-13 10:50:36,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c6d3bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:36, skipping insertion in model container [2022-07-13 10:50:36,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:50:36" (1/1) ... [2022-07-13 10:50:36,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 10:50:36,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 10:50:37,132 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/array-patterns/array7_pattern.c[1375,1388] [2022-07-13 10:50:37,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:50:37,156 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 10:50:37,164 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/array-patterns/array7_pattern.c[1375,1388] [2022-07-13 10:50:37,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:50:37,183 INFO L208 MainTranslator]: Completed translation [2022-07-13 10:50:37,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:37 WrapperNode [2022-07-13 10:50:37,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 10:50:37,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 10:50:37,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 10:50:37,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 10:50:37,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:37" (1/1) ... [2022-07-13 10:50:37,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:37" (1/1) ... [2022-07-13 10:50:37,212 INFO L137 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 89 [2022-07-13 10:50:37,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 10:50:37,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 10:50:37,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 10:50:37,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 10:50:37,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:37" (1/1) ... [2022-07-13 10:50:37,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:37" (1/1) ... [2022-07-13 10:50:37,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:37" (1/1) ... [2022-07-13 10:50:37,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:37" (1/1) ... [2022-07-13 10:50:37,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:37" (1/1) ... [2022-07-13 10:50:37,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:37" (1/1) ... [2022-07-13 10:50:37,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:37" (1/1) ... [2022-07-13 10:50:37,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 10:50:37,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 10:50:37,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 10:50:37,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 10:50:37,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:37" (1/1) ... [2022-07-13 10:50:37,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:50:37,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:50:37,268 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) [2022-07-13 10:50:37,274 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 [2022-07-13 10:50:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 10:50:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 10:50:37,299 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 10:50:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 10:50:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 10:50:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 10:50:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 10:50:37,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 10:50:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 10:50:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 10:50:37,361 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 10:50:37,362 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 10:50:37,529 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 10:50:37,533 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 10:50:37,534 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-13 10:50:37,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:50:37 BoogieIcfgContainer [2022-07-13 10:50:37,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 10:50:37,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 10:50:37,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 10:50:37,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 10:50:37,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:50:36" (1/3) ... [2022-07-13 10:50:37,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@587c9053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:50:37, skipping insertion in model container [2022-07-13 10:50:37,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:37" (2/3) ... [2022-07-13 10:50:37,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@587c9053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:50:37, skipping insertion in model container [2022-07-13 10:50:37,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:50:37" (3/3) ... [2022-07-13 10:50:37,543 INFO L111 eAbstractionObserver]: Analyzing ICFG array7_pattern.c [2022-07-13 10:50:37,553 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 10:50:37,554 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 10:50:37,590 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 10:50:37,596 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6397d731, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@60dd7806 [2022-07-13 10:50:37,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 10:50:37,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:50:37,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-13 10:50:37,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:37,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:37,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:37,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:37,611 INFO L85 PathProgramCache]: Analyzing trace with hash -440982883, now seen corresponding path program 1 times [2022-07-13 10:50:37,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:50:37,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116350124] [2022-07-13 10:50:37,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:37,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:50:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:37,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 10:50:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:50:37,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:50:37,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116350124] [2022-07-13 10:50:37,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116350124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:50:37,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:50:37,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 10:50:37,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086699811] [2022-07-13 10:50:37,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:50:37,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 10:50:37,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:50:37,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 10:50:37,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 10:50:37,756 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 10:50:37,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:37,771 INFO L93 Difference]: Finished difference Result 49 states and 71 transitions. [2022-07-13 10:50:37,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 10:50:37,772 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-13 10:50:37,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:37,794 INFO L225 Difference]: With dead ends: 49 [2022-07-13 10:50:37,796 INFO L226 Difference]: Without dead ends: 22 [2022-07-13 10:50:37,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 10:50:37,801 INFO L413 NwaCegarLoop]: 30 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, 30 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:37,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:50:37,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-13 10:50:37,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-13 10:50:37,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:50:37,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-07-13 10:50:37,844 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2022-07-13 10:50:37,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:37,844 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-07-13 10:50:37,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 10:50:37,845 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-07-13 10:50:37,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-13 10:50:37,846 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:37,846 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:37,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 10:50:37,846 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:37,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:37,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1396045698, now seen corresponding path program 1 times [2022-07-13 10:50:37,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:50:37,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223627202] [2022-07-13 10:50:37,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:37,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:50:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:38,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 10:50:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:38,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 10:50:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:38,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 10:50:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 10:50:38,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:50:38,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223627202] [2022-07-13 10:50:38,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223627202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:50:38,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:50:38,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 10:50:38,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17636462] [2022-07-13 10:50:38,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:50:38,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 10:50:38,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:50:38,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 10:50:38,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 10:50:38,061 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:50:38,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:38,099 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-07-13 10:50:38,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 10:50:38,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-07-13 10:50:38,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:38,102 INFO L225 Difference]: With dead ends: 27 [2022-07-13 10:50:38,102 INFO L226 Difference]: Without dead ends: 23 [2022-07-13 10:50:38,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:50:38,105 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:38,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 59 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:50:38,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-13 10:50:38,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-13 10:50:38,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:50:38,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-07-13 10:50:38,113 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 27 [2022-07-13 10:50:38,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:38,114 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-07-13 10:50:38,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:50:38,114 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-07-13 10:50:38,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-13 10:50:38,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:38,116 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:38,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 10:50:38,116 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:38,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:38,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1623352868, now seen corresponding path program 1 times [2022-07-13 10:50:38,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:50:38,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442965088] [2022-07-13 10:50:38,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:38,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:50:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:38,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 10:50:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:38,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 10:50:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:38,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 10:50:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:38,248 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 10:50:38,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:50:38,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442965088] [2022-07-13 10:50:38,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442965088] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:50:38,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:50:38,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 10:50:38,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602628446] [2022-07-13 10:50:38,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:50:38,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 10:50:38,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:50:38,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 10:50:38,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:50:38,256 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:50:38,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:38,309 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2022-07-13 10:50:38,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 10:50:38,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2022-07-13 10:50:38,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:38,313 INFO L225 Difference]: With dead ends: 43 [2022-07-13 10:50:38,313 INFO L226 Difference]: Without dead ends: 26 [2022-07-13 10:50:38,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:50:38,316 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:38,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 61 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:50:38,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-13 10:50:38,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-07-13 10:50:38,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:50:38,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-07-13 10:50:38,326 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 29 [2022-07-13 10:50:38,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:38,327 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-07-13 10:50:38,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:50:38,327 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-07-13 10:50:38,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-13 10:50:38,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:38,328 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:38,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 10:50:38,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:38,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:38,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1083978846, now seen corresponding path program 1 times [2022-07-13 10:50:38,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:50:38,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358727298] [2022-07-13 10:50:38,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:38,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:50:38,358 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:50:38,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932630743] [2022-07-13 10:50:38,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:38,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:38,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:50:38,372 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) [2022-07-13 10:50:38,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 10:50:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:38,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 10:50:38,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:50:38,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 10:50:38,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:50:38,800 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:50:38,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:50:38,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358727298] [2022-07-13 10:50:38,801 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:50:38,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932630743] [2022-07-13 10:50:38,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932630743] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:50:38,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:50:38,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2022-07-13 10:50:38,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960155233] [2022-07-13 10:50:38,802 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:50:38,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 10:50:38,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:50:38,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 10:50:38,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-07-13 10:50:38,804 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-13 10:50:39,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:39,029 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2022-07-13 10:50:39,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 10:50:39,030 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 31 [2022-07-13 10:50:39,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:39,032 INFO L225 Difference]: With dead ends: 73 [2022-07-13 10:50:39,032 INFO L226 Difference]: Without dead ends: 42 [2022-07-13 10:50:39,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-07-13 10:50:39,041 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 39 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:39,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 127 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 10:50:39,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-13 10:50:39,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2022-07-13 10:50:39,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:50:39,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-07-13 10:50:39,051 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 31 [2022-07-13 10:50:39,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:39,051 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-07-13 10:50:39,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-13 10:50:39,052 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-07-13 10:50:39,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 10:50:39,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:39,054 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:39,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 10:50:39,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:39,260 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:39,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:39,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1214758882, now seen corresponding path program 2 times [2022-07-13 10:50:39,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:50:39,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854479309] [2022-07-13 10:50:39,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:39,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:50:39,281 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:50:39,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566733381] [2022-07-13 10:50:39,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 10:50:39,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:39,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:50:39,283 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:50:39,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 10:50:39,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 10:50:39,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:50:39,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 10:50:39,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:50:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:50:39,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:50:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 10:50:39,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:50:39,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854479309] [2022-07-13 10:50:39,592 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:50:39,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566733381] [2022-07-13 10:50:39,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566733381] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:50:39,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:50:39,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-07-13 10:50:39,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429834251] [2022-07-13 10:50:39,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:50:39,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 10:50:39,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:50:39,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 10:50:39,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-07-13 10:50:39,595 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 10:50:39,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:39,745 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-07-13 10:50:39,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 10:50:39,749 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 35 [2022-07-13 10:50:39,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:39,753 INFO L225 Difference]: With dead ends: 40 [2022-07-13 10:50:39,753 INFO L226 Difference]: Without dead ends: 36 [2022-07-13 10:50:39,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2022-07-13 10:50:39,754 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 54 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:39,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 78 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 10:50:39,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-13 10:50:39,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-07-13 10:50:39,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:50:39,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-07-13 10:50:39,766 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 35 [2022-07-13 10:50:39,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:39,767 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-07-13 10:50:39,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 10:50:39,767 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-07-13 10:50:39,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-13 10:50:39,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:39,770 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:39,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 10:50:39,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:39,975 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:39,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:39,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1618850078, now seen corresponding path program 3 times [2022-07-13 10:50:39,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:50:39,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68366325] [2022-07-13 10:50:39,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:39,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:50:39,991 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 10:50:39,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798755768] [2022-07-13 10:50:39,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 10:50:39,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:39,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:50:39,993 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:50:40,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 10:50:40,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-13 10:50:40,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:50:40,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 86 conjunts are in the unsatisfiable core [2022-07-13 10:50:40,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:50:40,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-13 10:50:40,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:40,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-13 10:50:40,303 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-07-13 10:50:40,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-07-13 10:50:40,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:40,403 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2022-07-13 10:50:40,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:40,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2022-07-13 10:50:40,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:40,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:40,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-07-13 10:50:40,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:40,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 50 [2022-07-13 10:50:40,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:40,525 INFO L356 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2022-07-13 10:50:40,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 34 [2022-07-13 10:50:40,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:40,544 INFO L356 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2022-07-13 10:50:40,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 60 [2022-07-13 10:50:42,032 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-13 10:50:42,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 1182 treesize of output 1097 [2022-07-13 10:50:42,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,454 INFO L244 Elim1Store]: Index analysis took 367 ms [2022-07-13 10:50:42,470 INFO L356 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2022-07-13 10:50:42,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 26 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 2 case distinctions, treesize of input 431 treesize of output 518 [2022-07-13 10:50:42,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:42,840 INFO L244 Elim1Store]: Index analysis took 312 ms [2022-07-13 10:50:42,930 INFO L356 Elim1Store]: treesize reduction 175, result has 0.6 percent of original size [2022-07-13 10:50:42,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 6 stores, 7 select indices, 7 select index equivalence classes, 32 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 6 case distinctions, treesize of input 667 treesize of output 1321 [2022-07-13 10:50:45,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:50:45,595 INFO L244 Elim1Store]: Index analysis took 171 ms [2022-07-13 10:50:45,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:50:45,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68366325] [2022-07-13 10:50:45,596 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 10:50:45,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798755768] [2022-07-13 10:50:45,596 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-13 10:50:45,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 10:50:45,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:50:45,797 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ClassCastException: class de.uni_freiburg.informatik.ultimate.logic.TermVariable cannot be cast to class de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm (de.uni_freiburg.informatik.ultimate.logic.TermVariable and de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @54e81b21) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.MultiDimensionalSelect.(MultiDimensionalSelect.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.constructNestedStoreUpdateConstraintForOnePosition(ArrayIndexEqualityManager.java:415) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.constructNestedStoreUpdateConstraint(ArrayIndexEqualityManager.java:449) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.constructWriteConstraints2(Elim1Store.java:975) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:314) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:182) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:164) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:152) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:764) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:725) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:643) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:335) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:176) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:251) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-13 10:50:45,801 INFO L158 Benchmark]: Toolchain (without parser) took 8829.05ms. Allocated memory was 102.8MB in the beginning and 151.0MB in the end (delta: 48.2MB). Free memory was 75.3MB in the beginning and 96.1MB in the end (delta: -20.8MB). Peak memory consumption was 86.8MB. Max. memory is 16.1GB. [2022-07-13 10:50:45,801 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 102.8MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 10:50:45,801 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.03ms. Allocated memory is still 102.8MB. Free memory was 75.1MB in the beginning and 76.5MB in the end (delta: -1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 10:50:45,801 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.09ms. Allocated memory is still 102.8MB. Free memory was 76.5MB in the beginning and 74.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 10:50:45,801 INFO L158 Benchmark]: Boogie Preprocessor took 25.45ms. Allocated memory is still 102.8MB. Free memory was 74.6MB in the beginning and 73.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 10:50:45,802 INFO L158 Benchmark]: RCFGBuilder took 296.00ms. Allocated memory is still 102.8MB. Free memory was 73.4MB in the beginning and 62.0MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-13 10:50:45,802 INFO L158 Benchmark]: TraceAbstraction took 8263.06ms. Allocated memory was 102.8MB in the beginning and 151.0MB in the end (delta: 48.2MB). Free memory was 61.6MB in the beginning and 96.1MB in the end (delta: -34.5MB). Peak memory consumption was 73.9MB. Max. memory is 16.1GB. [2022-07-13 10:50:45,803 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 102.8MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.03ms. Allocated memory is still 102.8MB. Free memory was 75.1MB in the beginning and 76.5MB in the end (delta: -1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.09ms. Allocated memory is still 102.8MB. Free memory was 76.5MB in the beginning and 74.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.45ms. Allocated memory is still 102.8MB. Free memory was 74.6MB in the beginning and 73.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 296.00ms. Allocated memory is still 102.8MB. Free memory was 73.4MB in the beginning and 62.0MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8263.06ms. Allocated memory was 102.8MB in the beginning and 151.0MB in the end (delta: 48.2MB). Free memory was 61.6MB in the beginning and 96.1MB in the end (delta: -34.5MB). Peak memory consumption was 73.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ClassCastException: class de.uni_freiburg.informatik.ultimate.logic.TermVariable cannot be cast to class de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm (de.uni_freiburg.informatik.ultimate.logic.TermVariable and de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @54e81b21) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ClassCastException: class de.uni_freiburg.informatik.ultimate.logic.TermVariable cannot be cast to class de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm (de.uni_freiburg.informatik.ultimate.logic.TermVariable and de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @54e81b21): de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.MultiDimensionalSelect.(MultiDimensionalSelect.java:103) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-13 10:50:45,835 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/array-patterns/array7_pattern.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 85b55cdd1f26353e63ecc189ba28ba899672edc569fe3ef3f04470f2b5e667fa --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 10:50:47,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 10:50:47,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 10:50:47,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 10:50:47,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 10:50:47,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 10:50:47,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 10:50:47,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 10:50:47,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 10:50:47,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 10:50:47,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 10:50:47,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 10:50:47,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 10:50:47,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 10:50:47,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 10:50:47,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 10:50:47,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 10:50:47,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 10:50:47,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 10:50:47,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 10:50:47,752 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 10:50:47,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 10:50:47,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 10:50:47,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 10:50:47,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 10:50:47,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 10:50:47,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 10:50:47,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 10:50:47,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 10:50:47,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 10:50:47,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 10:50:47,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 10:50:47,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 10:50:47,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 10:50:47,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 10:50:47,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 10:50:47,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 10:50:47,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 10:50:47,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 10:50:47,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 10:50:47,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 10:50:47,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 10:50:47,781 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 10:50:47,808 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 10:50:47,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 10:50:47,809 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 10:50:47,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 10:50:47,810 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 10:50:47,810 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 10:50:47,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 10:50:47,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 10:50:47,811 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 10:50:47,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 10:50:47,812 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 10:50:47,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 10:50:47,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 10:50:47,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 10:50:47,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 10:50:47,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 10:50:47,823 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 10:50:47,823 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 10:50:47,823 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 10:50:47,823 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 10:50:47,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 10:50:47,824 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 10:50:47,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 10:50:47,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 10:50:47,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 10:50:47,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 10:50:47,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:50:47,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 10:50:47,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 10:50:47,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 10:50:47,826 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 10:50:47,826 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 10:50:47,827 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 10:50:47,827 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 10:50:47,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 10:50:47,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 10:50:47,828 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b55cdd1f26353e63ecc189ba28ba899672edc569fe3ef3f04470f2b5e667fa [2022-07-13 10:50:48,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 10:50:48,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 10:50:48,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 10:50:48,154 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 10:50:48,154 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 10:50:48,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array7_pattern.c [2022-07-13 10:50:48,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/575b373d2/124afb634ef3461fb21a95fda4f7b994/FLAG6525a9003 [2022-07-13 10:50:48,618 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 10:50:48,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array7_pattern.c [2022-07-13 10:50:48,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/575b373d2/124afb634ef3461fb21a95fda4f7b994/FLAG6525a9003 [2022-07-13 10:50:49,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/575b373d2/124afb634ef3461fb21a95fda4f7b994 [2022-07-13 10:50:49,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 10:50:49,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 10:50:49,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 10:50:49,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 10:50:49,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 10:50:49,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:50:49" (1/1) ... [2022-07-13 10:50:49,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45cb6832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:49, skipping insertion in model container [2022-07-13 10:50:49,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:50:49" (1/1) ... [2022-07-13 10:50:49,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 10:50:49,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 10:50:49,167 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/array-patterns/array7_pattern.c[1375,1388] [2022-07-13 10:50:49,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:50:49,201 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 10:50:49,240 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/array-patterns/array7_pattern.c[1375,1388] [2022-07-13 10:50:49,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:50:49,280 INFO L208 MainTranslator]: Completed translation [2022-07-13 10:50:49,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:49 WrapperNode [2022-07-13 10:50:49,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 10:50:49,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 10:50:49,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 10:50:49,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 10:50:49,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:49" (1/1) ... [2022-07-13 10:50:49,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:49" (1/1) ... [2022-07-13 10:50:49,314 INFO L137 Inliner]: procedures = 18, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2022-07-13 10:50:49,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 10:50:49,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 10:50:49,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 10:50:49,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 10:50:49,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:49" (1/1) ... [2022-07-13 10:50:49,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:49" (1/1) ... [2022-07-13 10:50:49,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:49" (1/1) ... [2022-07-13 10:50:49,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:49" (1/1) ... [2022-07-13 10:50:49,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:49" (1/1) ... [2022-07-13 10:50:49,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:49" (1/1) ... [2022-07-13 10:50:49,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:49" (1/1) ... [2022-07-13 10:50:49,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 10:50:49,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 10:50:49,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 10:50:49,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 10:50:49,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:49" (1/1) ... [2022-07-13 10:50:49,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:50:49,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:50:49,400 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) [2022-07-13 10:50:49,410 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 [2022-07-13 10:50:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 10:50:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 10:50:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 10:50:49,441 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 10:50:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 10:50:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-13 10:50:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 10:50:49,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 10:50:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 10:50:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-13 10:50:49,536 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 10:50:49,537 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 10:50:49,760 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 10:50:49,765 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 10:50:49,765 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-13 10:50:49,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:50:49 BoogieIcfgContainer [2022-07-13 10:50:49,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 10:50:49,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 10:50:49,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 10:50:49,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 10:50:49,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:50:49" (1/3) ... [2022-07-13 10:50:49,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5464b3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:50:49, skipping insertion in model container [2022-07-13 10:50:49,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:50:49" (2/3) ... [2022-07-13 10:50:49,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5464b3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:50:49, skipping insertion in model container [2022-07-13 10:50:49,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:50:49" (3/3) ... [2022-07-13 10:50:49,773 INFO L111 eAbstractionObserver]: Analyzing ICFG array7_pattern.c [2022-07-13 10:50:49,814 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 10:50:49,814 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 10:50:49,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 10:50:49,896 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5be72b60, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5eb7343b [2022-07-13 10:50:49,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 10:50:49,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:50:49,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-13 10:50:49,913 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:49,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:49,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:49,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:49,925 INFO L85 PathProgramCache]: Analyzing trace with hash -440982883, now seen corresponding path program 1 times [2022-07-13 10:50:49,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 10:50:49,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481852847] [2022-07-13 10:50:49,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:49,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 10:50:49,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 10:50:49,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 10:50:49,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 10:50:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:50,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 10:50:50,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:50:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:50:50,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:50:50,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 10:50:50,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481852847] [2022-07-13 10:50:50,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481852847] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:50:50,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:50:50,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 10:50:50,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792521767] [2022-07-13 10:50:50,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:50:50,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 10:50:50,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 10:50:50,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 10:50:50,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 10:50:50,108 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 10:50:50,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:50,128 INFO L93 Difference]: Finished difference Result 49 states and 71 transitions. [2022-07-13 10:50:50,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 10:50:50,131 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-13 10:50:50,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:50,136 INFO L225 Difference]: With dead ends: 49 [2022-07-13 10:50:50,136 INFO L226 Difference]: Without dead ends: 22 [2022-07-13 10:50:50,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 10:50:50,144 INFO L413 NwaCegarLoop]: 30 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, 30 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:50,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:50:50,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-13 10:50:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-13 10:50:50,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:50:50,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-07-13 10:50:50,193 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2022-07-13 10:50:50,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:50,194 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-07-13 10:50:50,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 10:50:50,194 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-07-13 10:50:50,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-13 10:50:50,197 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:50,197 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:50,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-13 10:50:50,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 10:50:50,407 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:50,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:50,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1396045698, now seen corresponding path program 1 times [2022-07-13 10:50:50,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 10:50:50,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443343044] [2022-07-13 10:50:50,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:50,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 10:50:50,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 10:50:50,416 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 10:50:50,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-13 10:50:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:50,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 10:50:50,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:50:50,573 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 10:50:50,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:50:50,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 10:50:50,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443343044] [2022-07-13 10:50:50,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443343044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:50:50,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:50:50,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 10:50:50,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727837757] [2022-07-13 10:50:50,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:50:50,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 10:50:50,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 10:50:50,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 10:50:50,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 10:50:50,583 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:50:50,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:50,616 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-07-13 10:50:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 10:50:50,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-07-13 10:50:50,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:50,619 INFO L225 Difference]: With dead ends: 27 [2022-07-13 10:50:50,619 INFO L226 Difference]: Without dead ends: 23 [2022-07-13 10:50:50,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:50:50,621 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:50,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 59 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:50:50,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-13 10:50:50,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-13 10:50:50,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:50:50,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-07-13 10:50:50,637 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 27 [2022-07-13 10:50:50,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:50,638 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-07-13 10:50:50,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:50:50,638 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-07-13 10:50:50,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-13 10:50:50,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:50,639 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:50,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-13 10:50:50,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 10:50:50,849 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:50,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:50,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1623352868, now seen corresponding path program 1 times [2022-07-13 10:50:50,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 10:50:50,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658594281] [2022-07-13 10:50:50,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:50,851 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 10:50:50,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 10:50:50,856 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 10:50:50,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-13 10:50:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:50,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 10:50:50,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:50:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 10:50:51,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 10:50:51,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 10:50:51,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658594281] [2022-07-13 10:50:51,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658594281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:50:51,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:50:51,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 10:50:51,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872208543] [2022-07-13 10:50:51,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:50:51,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 10:50:51,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 10:50:51,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 10:50:51,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-13 10:50:51,140 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:50:51,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:51,147 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2022-07-13 10:50:51,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 10:50:51,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2022-07-13 10:50:51,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:51,148 INFO L225 Difference]: With dead ends: 45 [2022-07-13 10:50:51,148 INFO L226 Difference]: Without dead ends: 28 [2022-07-13 10:50:51,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-13 10:50:51,149 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:51,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 67 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 26 Unchecked, 0.0s Time] [2022-07-13 10:50:51,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-13 10:50:51,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-07-13 10:50:51,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:50:51,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-07-13 10:50:51,155 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 29 [2022-07-13 10:50:51,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:51,156 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-07-13 10:50:51,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 10:50:51,156 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-07-13 10:50:51,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-13 10:50:51,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:51,157 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:51,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-13 10:50:51,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 10:50:51,366 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:50:51,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:50:51,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1083978846, now seen corresponding path program 1 times [2022-07-13 10:50:51,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 10:50:51,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867998882] [2022-07-13 10:50:51,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:51,368 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 10:50:51,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 10:50:51,373 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 10:50:51,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-13 10:50:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:51,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 10:50:51,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:50:51,824 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 10:50:51,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:50:55,856 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 10:50:55,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867998882] [2022-07-13 10:50:55,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867998882] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:50:55,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [864988555] [2022-07-13 10:50:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:50:55,856 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-13 10:50:55,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-13 10:50:55,872 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-13 10:50:55,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-07-13 10:50:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:50:56,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 10:50:56,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:50:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 10:50:56,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:50:59,005 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 10:50:59,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [864988555] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:50:59,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:50:59,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 23 [2022-07-13 10:50:59,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902342323] [2022-07-13 10:50:59,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:50:59,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-13 10:50:59,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 10:50:59,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-13 10:50:59,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=558, Unknown=1, NotChecked=0, Total=702 [2022-07-13 10:50:59,009 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 23 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 19 states have internal predecessors, (46), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-13 10:50:59,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:50:59,841 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2022-07-13 10:50:59,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 10:50:59,842 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 19 states have internal predecessors, (46), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 31 [2022-07-13 10:50:59,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:50:59,844 INFO L225 Difference]: With dead ends: 61 [2022-07-13 10:50:59,844 INFO L226 Difference]: Without dead ends: 37 [2022-07-13 10:50:59,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 75 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=180, Invalid=689, Unknown=1, NotChecked=0, Total=870 [2022-07-13 10:50:59,846 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 44 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 10:50:59,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 146 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 60 Invalid, 0 Unknown, 117 Unchecked, 0.2s Time] [2022-07-13 10:50:59,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-13 10:50:59,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2022-07-13 10:50:59,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:50:59,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-07-13 10:50:59,852 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 31 [2022-07-13 10:50:59,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:50:59,853 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-07-13 10:50:59,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 19 states have internal predecessors, (46), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-07-13 10:50:59,853 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-07-13 10:50:59,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 10:50:59,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:50:59,854 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:50:59,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-13 10:51:00,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-07-13 10:51:00,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-13 10:51:00,265 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:51:00,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:51:00,265 INFO L85 PathProgramCache]: Analyzing trace with hash 891431106, now seen corresponding path program 2 times [2022-07-13 10:51:00,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 10:51:00,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289121264] [2022-07-13 10:51:00,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 10:51:00,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 10:51:00,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 10:51:00,267 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 10:51:00,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-13 10:51:00,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 10:51:00,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:51:00,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-13 10:51:00,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:51:02,174 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:51:02,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:51:03,541 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 10:51:03,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 10:51:03,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289121264] [2022-07-13 10:51:03,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289121264] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:51:03,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:51:03,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 26 [2022-07-13 10:51:03,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701203760] [2022-07-13 10:51:03,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:51:03,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 10:51:03,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 10:51:03,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 10:51:03,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2022-07-13 10:51:03,545 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 26 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 23 states have internal predecessors, (48), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 10:51:04,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:51:04,893 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2022-07-13 10:51:04,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 10:51:04,895 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 23 states have internal predecessors, (48), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 35 [2022-07-13 10:51:04,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:51:04,896 INFO L225 Difference]: With dead ends: 60 [2022-07-13 10:51:04,896 INFO L226 Difference]: Without dead ends: 56 [2022-07-13 10:51:04,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=229, Invalid=763, Unknown=0, NotChecked=0, Total=992 [2022-07-13 10:51:04,897 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 53 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 10:51:04,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 144 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 42 Invalid, 0 Unknown, 110 Unchecked, 0.2s Time] [2022-07-13 10:51:04,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-13 10:51:04,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2022-07-13 10:51:04,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:51:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-07-13 10:51:04,914 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 35 [2022-07-13 10:51:04,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:51:04,914 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-07-13 10:51:04,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 23 states have internal predecessors, (48), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 10:51:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-07-13 10:51:04,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-13 10:51:04,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:51:04,916 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:51:04,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-13 10:51:05,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 10:51:05,132 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:51:05,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:51:05,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2020034404, now seen corresponding path program 3 times [2022-07-13 10:51:05,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 10:51:05,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254834864] [2022-07-13 10:51:05,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 10:51:05,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 10:51:05,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 10:51:05,136 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 10:51:05,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-13 10:51:05,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-13 10:51:05,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:51:05,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 10:51:05,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:51:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:51:05,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:51:06,978 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 10:51:06,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 10:51:06,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254834864] [2022-07-13 10:51:06,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254834864] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:51:06,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 10:51:06,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2022-07-13 10:51:06,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245145225] [2022-07-13 10:51:06,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 10:51:06,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-13 10:51:06,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 10:51:06,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-13 10:51:06,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-07-13 10:51:06,983 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-13 10:51:07,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:51:07,805 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2022-07-13 10:51:07,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 10:51:07,806 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 37 [2022-07-13 10:51:07,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:51:07,807 INFO L225 Difference]: With dead ends: 57 [2022-07-13 10:51:07,807 INFO L226 Difference]: Without dead ends: 36 [2022-07-13 10:51:07,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=203, Invalid=789, Unknown=0, NotChecked=0, Total=992 [2022-07-13 10:51:07,809 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 47 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 10:51:07,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 189 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 83 Invalid, 0 Unknown, 103 Unchecked, 0.2s Time] [2022-07-13 10:51:07,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-13 10:51:07,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-07-13 10:51:07,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 10:51:07,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-07-13 10:51:07,828 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 37 [2022-07-13 10:51:07,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:51:07,829 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-07-13 10:51:07,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-13 10:51:07,829 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-07-13 10:51:07,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-13 10:51:07,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:51:07,832 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:51:07,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-13 10:51:08,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 10:51:08,045 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:51:08,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:51:08,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1618850078, now seen corresponding path program 4 times [2022-07-13 10:51:08,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 10:51:08,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034523010] [2022-07-13 10:51:08,046 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 10:51:08,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 10:51:08,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 10:51:08,047 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 10:51:08,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-13 10:51:08,249 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 10:51:08,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:51:08,262 WARN L261 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 63 conjunts are in the unsatisfiable core [2022-07-13 10:51:08,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:51:08,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-13 10:51:08,485 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:08,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2022-07-13 10:51:09,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:09,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:09,242 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 67 [2022-07-13 10:51:09,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:09,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:09,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:09,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:09,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:09,836 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2022-07-13 10:51:11,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:11,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:11,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:11,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:11,927 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:11,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:11,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:11,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:11,995 INFO L356 Elim1Store]: treesize reduction 134, result has 7.6 percent of original size [2022-07-13 10:51:11,996 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 38 case distinctions, treesize of input 161 treesize of output 133 [2022-07-13 10:51:14,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:14,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:14,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:14,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:14,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:51:14,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:14,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:51:14,077 INFO L356 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2022-07-13 10:51:14,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 3 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 110 treesize of output 53 [2022-07-13 10:51:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 10:51:14,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:52:24,564 WARN L233 SmtUtils]: Spent 7.14s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 10:52:47,444 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification that was a NOOP. DAG size: 111 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)