./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/max10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/reducercommutativity/max10-1.i -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 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 09:37:22,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 09:37:22,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 09:37:22,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 09:37:22,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 09:37:22,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 09:37:22,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 09:37:22,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 09:37:22,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 09:37:22,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 09:37:22,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 09:37:22,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 09:37:22,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 09:37:22,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 09:37:22,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 09:37:22,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 09:37:22,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 09:37:22,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 09:37:22,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 09:37:22,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 09:37:22,180 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 09:37:22,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 09:37:22,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 09:37:22,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 09:37:22,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 09:37:22,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 09:37:22,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 09:37:22,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 09:37:22,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 09:37:22,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 09:37:22,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 09:37:22,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 09:37:22,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 09:37:22,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 09:37:22,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 09:37:22,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 09:37:22,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 09:37:22,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 09:37:22,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 09:37:22,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 09:37:22,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 09:37:22,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 09:37:22,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 09:37:22,222 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 09:37:22,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 09:37:22,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 09:37:22,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 09:37:22,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 09:37:22,227 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 09:37:22,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 09:37:22,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 09:37:22,229 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 09:37:22,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 09:37:22,230 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 09:37:22,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 09:37:22,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 09:37:22,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 09:37:22,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 09:37:22,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 09:37:22,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 09:37:22,231 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 09:37:22,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 09:37:22,232 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 09:37:22,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 09:37:22,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 09:37:22,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 09:37:22,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 09:37:22,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 09:37:22,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 09:37:22,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 09:37:22,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 09:37:22,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 09:37:22,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 09:37:22,234 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 09:37:22,235 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 09:37:22,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 09:37:22,235 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e [2022-07-22 09:37:22,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 09:37:22,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 09:37:22,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 09:37:22,505 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 09:37:22,506 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 09:37:22,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/max10-1.i [2022-07-22 09:37:22,578 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59e09df96/9855028623964d09aab2374366125968/FLAG3a551be02 [2022-07-22 09:37:22,988 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 09:37:22,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/max10-1.i [2022-07-22 09:37:22,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59e09df96/9855028623964d09aab2374366125968/FLAG3a551be02 [2022-07-22 09:37:23,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59e09df96/9855028623964d09aab2374366125968 [2022-07-22 09:37:23,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 09:37:23,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 09:37:23,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 09:37:23,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 09:37:23,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 09:37:23,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:37:23" (1/1) ... [2022-07-22 09:37:23,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf21562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:37:23, skipping insertion in model container [2022-07-22 09:37:23,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:37:23" (1/1) ... [2022-07-22 09:37:23,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 09:37:23,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 09:37:23,613 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/reducercommutativity/max10-1.i[1290,1303] [2022-07-22 09:37:23,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 09:37:23,634 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 09:37:23,667 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/reducercommutativity/max10-1.i[1290,1303] [2022-07-22 09:37:23,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 09:37:23,693 INFO L208 MainTranslator]: Completed translation [2022-07-22 09:37:23,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:37:23 WrapperNode [2022-07-22 09:37:23,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 09:37:23,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 09:37:23,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 09:37:23,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 09:37:23,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:37:23" (1/1) ... [2022-07-22 09:37:23,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:37:23" (1/1) ... [2022-07-22 09:37:23,741 INFO L137 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-07-22 09:37:23,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 09:37:23,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 09:37:23,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 09:37:23,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 09:37:23,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:37:23" (1/1) ... [2022-07-22 09:37:23,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:37:23" (1/1) ... [2022-07-22 09:37:23,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:37:23" (1/1) ... [2022-07-22 09:37:23,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:37:23" (1/1) ... [2022-07-22 09:37:23,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:37:23" (1/1) ... [2022-07-22 09:37:23,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:37:23" (1/1) ... [2022-07-22 09:37:23,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:37:23" (1/1) ... [2022-07-22 09:37:23,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 09:37:23,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 09:37:23,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 09:37:23,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 09:37:23,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:37:23" (1/1) ... [2022-07-22 09:37:23,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 09:37:23,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:37:23,810 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) [2022-07-22 09:37:23,815 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 [2022-07-22 09:37:23,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 09:37:23,840 INFO L130 BoogieDeclarations]: Found specification of procedure max [2022-07-22 09:37:23,841 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2022-07-22 09:37:23,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 09:37:23,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 09:37:23,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 09:37:23,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 09:37:23,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 09:37:23,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 09:37:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 09:37:23,896 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 09:37:23,898 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 09:37:24,027 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 09:37:24,033 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 09:37:24,034 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-22 09:37:24,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:37:24 BoogieIcfgContainer [2022-07-22 09:37:24,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 09:37:24,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 09:37:24,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 09:37:24,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 09:37:24,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:37:23" (1/3) ... [2022-07-22 09:37:24,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783e2665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:37:24, skipping insertion in model container [2022-07-22 09:37:24,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:37:23" (2/3) ... [2022-07-22 09:37:24,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783e2665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:37:24, skipping insertion in model container [2022-07-22 09:37:24,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:37:24" (3/3) ... [2022-07-22 09:37:24,060 INFO L111 eAbstractionObserver]: Analyzing ICFG max10-1.i [2022-07-22 09:37:24,074 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 09:37:24,080 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 09:37:24,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 09:37:24,162 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@6601f56a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6e37de0f [2022-07-22 09:37:24,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 09:37:24,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 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) [2022-07-22 09:37:24,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 09:37:24,181 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:37:24,182 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:37:24,182 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:37:24,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:37:24,187 INFO L85 PathProgramCache]: Analyzing trace with hash -528134526, now seen corresponding path program 1 times [2022-07-22 09:37:24,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:37:24,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379273739] [2022-07-22 09:37:24,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:37:24,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:37:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:24,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 09:37:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:24,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 09:37:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:24,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 09:37:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 09:37:24,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:37:24,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379273739] [2022-07-22 09:37:24,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379273739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 09:37:24,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 09:37:24,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 09:37:24,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882434122] [2022-07-22 09:37:24,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 09:37:24,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 09:37:24,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:37:24,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 09:37:24,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 09:37:24,403 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 09:37:24,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:37:24,427 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2022-07-22 09:37:24,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 09:37:24,430 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-07-22 09:37:24,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:37:24,440 INFO L225 Difference]: With dead ends: 52 [2022-07-22 09:37:24,440 INFO L226 Difference]: Without dead ends: 24 [2022-07-22 09:37:24,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 09:37:24,446 INFO L413 NwaCegarLoop]: 33 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, 33 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 [2022-07-22 09:37:24,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:37:24,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-07-22 09:37:24,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-07-22 09:37:24,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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) [2022-07-22 09:37:24,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-07-22 09:37:24,476 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 28 [2022-07-22 09:37:24,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:37:24,476 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-07-22 09:37:24,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 09:37:24,477 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2022-07-22 09:37:24,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 09:37:24,479 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:37:24,479 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:37:24,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 09:37:24,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:37:24,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:37:24,481 INFO L85 PathProgramCache]: Analyzing trace with hash -321958693, now seen corresponding path program 1 times [2022-07-22 09:37:24,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:37:24,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13521463] [2022-07-22 09:37:24,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:37:24,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:37:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:24,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 09:37:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:24,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 09:37:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:24,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 09:37:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 09:37:24,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:37:24,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13521463] [2022-07-22 09:37:24,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13521463] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:37:24,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002860552] [2022-07-22 09:37:24,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:37:24,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:37:24,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:37:24,571 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) [2022-07-22 09:37:24,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 09:37:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:24,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 09:37:24,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:37:24,679 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 09:37:24,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 09:37:24,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002860552] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 09:37:24,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 09:37:24,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-22 09:37:24,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927302852] [2022-07-22 09:37:24,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 09:37:24,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 09:37:24,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:37:24,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 09:37:24,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 09:37:24,693 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 09:37:24,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:37:24,721 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2022-07-22 09:37:24,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 09:37:24,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-07-22 09:37:24,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:37:24,723 INFO L225 Difference]: With dead ends: 46 [2022-07-22 09:37:24,723 INFO L226 Difference]: Without dead ends: 26 [2022-07-22 09:37:24,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 09:37:24,726 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:37:24,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 52 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:37:24,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-22 09:37:24,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-07-22 09:37:24,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 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) [2022-07-22 09:37:24,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-07-22 09:37:24,734 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 28 [2022-07-22 09:37:24,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:37:24,734 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-07-22 09:37:24,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 09:37:24,735 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-07-22 09:37:24,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-22 09:37:24,736 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:37:24,736 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:37:24,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 09:37:24,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:37:24,963 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:37:24,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:37:24,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1777476163, now seen corresponding path program 1 times [2022-07-22 09:37:24,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:37:24,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957262995] [2022-07-22 09:37:24,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:37:24,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:37:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:25,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 09:37:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:25,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 09:37:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:25,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 09:37:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 09:37:25,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:37:25,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957262995] [2022-07-22 09:37:25,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957262995] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:37:25,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280277750] [2022-07-22 09:37:25,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:37:25,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:37:25,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:37:25,075 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) [2022-07-22 09:37:25,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 09:37:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:25,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 09:37:25,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:37:25,172 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 09:37:25,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 09:37:25,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280277750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 09:37:25,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 09:37:25,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-22 09:37:25,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122832045] [2022-07-22 09:37:25,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 09:37:25,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 09:37:25,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:37:25,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 09:37:25,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 09:37:25,175 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 09:37:25,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:37:25,193 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2022-07-22 09:37:25,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 09:37:25,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-07-22 09:37:25,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:37:25,197 INFO L225 Difference]: With dead ends: 48 [2022-07-22 09:37:25,197 INFO L226 Difference]: Without dead ends: 29 [2022-07-22 09:37:25,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 09:37:25,201 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:37:25,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 50 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:37:25,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-22 09:37:25,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2022-07-22 09:37:25,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 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) [2022-07-22 09:37:25,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-07-22 09:37:25,213 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 30 [2022-07-22 09:37:25,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:37:25,213 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-07-22 09:37:25,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 09:37:25,214 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-07-22 09:37:25,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-22 09:37:25,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:37:25,216 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-07-22 09:37:25,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 09:37:25,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-22 09:37:25,422 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:37:25,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:37:25,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1540631384, now seen corresponding path program 1 times [2022-07-22 09:37:25,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:37:25,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837426409] [2022-07-22 09:37:25,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:37:25,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:37:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:25,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 09:37:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:25,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 09:37:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:25,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 09:37:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:25,506 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 09:37:25,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:37:25,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837426409] [2022-07-22 09:37:25,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837426409] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:37:25,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543192591] [2022-07-22 09:37:25,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:37:25,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:37:25,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:37:25,509 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) [2022-07-22 09:37:25,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 09:37:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:25,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 09:37:25,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:37:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 09:37:25,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 09:37:25,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543192591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 09:37:25,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 09:37:25,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-22 09:37:25,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347178337] [2022-07-22 09:37:25,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 09:37:25,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 09:37:25,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:37:25,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 09:37:25,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 09:37:25,592 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-07-22 09:37:25,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:37:25,602 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2022-07-22 09:37:25,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 09:37:25,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 42 [2022-07-22 09:37:25,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:37:25,604 INFO L225 Difference]: With dead ends: 43 [2022-07-22 09:37:25,604 INFO L226 Difference]: Without dead ends: 28 [2022-07-22 09:37:25,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 09:37:25,610 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:37:25,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 51 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:37:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-22 09:37:25,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-07-22 09:37:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 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) [2022-07-22 09:37:25,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-07-22 09:37:25,620 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 42 [2022-07-22 09:37:25,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:37:25,621 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-07-22 09:37:25,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-07-22 09:37:25,621 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-07-22 09:37:25,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-22 09:37:25,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:37:25,623 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1] [2022-07-22 09:37:25,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 09:37:25,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:37:25,840 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:37:25,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:37:25,840 INFO L85 PathProgramCache]: Analyzing trace with hash -180199466, now seen corresponding path program 1 times [2022-07-22 09:37:25,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:37:25,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372555563] [2022-07-22 09:37:25,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:37:25,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:37:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:25,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-22 09:37:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:25,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 09:37:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:25,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 09:37:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:25,961 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 09:37:25,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:37:25,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372555563] [2022-07-22 09:37:25,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372555563] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:37:25,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283938890] [2022-07-22 09:37:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:37:25,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:37:25,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:37:25,968 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 09:37:25,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 09:37:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:26,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 09:37:26,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:37:26,074 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-22 09:37:26,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:37:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-22 09:37:26,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283938890] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 09:37:26,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 09:37:26,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-07-22 09:37:26,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199451949] [2022-07-22 09:37:26,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 09:37:26,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 09:37:26,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:37:26,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 09:37:26,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-22 09:37:26,111 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 09:37:26,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:37:26,147 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2022-07-22 09:37:26,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 09:37:26,148 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2022-07-22 09:37:26,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:37:26,148 INFO L225 Difference]: With dead ends: 62 [2022-07-22 09:37:26,149 INFO L226 Difference]: Without dead ends: 40 [2022-07-22 09:37:26,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-22 09:37:26,150 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:37:26,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 70 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:37:26,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-07-22 09:37:26,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2022-07-22 09:37:26,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 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) [2022-07-22 09:37:26,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-07-22 09:37:26,156 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 44 [2022-07-22 09:37:26,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:37:26,156 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-07-22 09:37:26,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-22 09:37:26,156 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-07-22 09:37:26,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-22 09:37:26,158 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:37:26,158 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:37:26,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 09:37:26,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:37:26,367 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:37:26,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:37:26,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1875433, now seen corresponding path program 2 times [2022-07-22 09:37:26,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:37:26,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179922834] [2022-07-22 09:37:26,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:37:26,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:37:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:26,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 09:37:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:26,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 09:37:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:26,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 09:37:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:26,453 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-22 09:37:26,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:37:26,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179922834] [2022-07-22 09:37:26,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179922834] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:37:26,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411043218] [2022-07-22 09:37:26,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 09:37:26,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:37:26,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:37:26,456 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 09:37:26,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 09:37:26,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 09:37:26,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 09:37:26,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 09:37:26,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:37:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-22 09:37:26,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:37:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-22 09:37:26,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411043218] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 09:37:26,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 09:37:26,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-07-22 09:37:26,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979851870] [2022-07-22 09:37:26,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 09:37:26,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 09:37:26,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:37:26,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 09:37:26,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-07-22 09:37:26,704 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 09:37:26,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:37:26,753 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2022-07-22 09:37:26,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 09:37:26,754 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2022-07-22 09:37:26,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:37:26,755 INFO L225 Difference]: With dead ends: 78 [2022-07-22 09:37:26,755 INFO L226 Difference]: Without dead ends: 52 [2022-07-22 09:37:26,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-07-22 09:37:26,756 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:37:26,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 93 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:37:26,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-07-22 09:37:26,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-07-22 09:37:26,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 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) [2022-07-22 09:37:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-07-22 09:37:26,767 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 62 [2022-07-22 09:37:26,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:37:26,768 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-07-22 09:37:26,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 09:37:26,769 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-07-22 09:37:26,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-22 09:37:26,772 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:37:26,773 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:37:26,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 09:37:26,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:37:26,992 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:37:26,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:37:26,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1341943393, now seen corresponding path program 3 times [2022-07-22 09:37:26,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:37:26,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560323035] [2022-07-22 09:37:26,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:37:26,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:37:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:27,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 09:37:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:27,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 09:37:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:27,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 09:37:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:27,169 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-22 09:37:27,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:37:27,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560323035] [2022-07-22 09:37:27,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560323035] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:37:27,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977061602] [2022-07-22 09:37:27,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 09:37:27,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:37:27,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:37:27,171 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 09:37:27,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 09:37:27,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-22 09:37:27,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 09:37:27,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 09:37:27,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:37:27,272 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-22 09:37:27,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:37:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-22 09:37:27,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977061602] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 09:37:27,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 09:37:27,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-07-22 09:37:27,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777813284] [2022-07-22 09:37:27,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 09:37:27,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 09:37:27,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:37:27,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 09:37:27,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-22 09:37:27,320 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 09:37:27,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:37:27,352 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2022-07-22 09:37:27,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 09:37:27,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2022-07-22 09:37:27,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:37:27,355 INFO L225 Difference]: With dead ends: 94 [2022-07-22 09:37:27,355 INFO L226 Difference]: Without dead ends: 67 [2022-07-22 09:37:27,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-22 09:37:27,359 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 40 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:37:27,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 58 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:37:27,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-07-22 09:37:27,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-07-22 09:37:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 62 states have internal predecessors, (71), 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) [2022-07-22 09:37:27,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2022-07-22 09:37:27,381 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 76 [2022-07-22 09:37:27,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:37:27,383 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2022-07-22 09:37:27,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 09:37:27,384 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2022-07-22 09:37:27,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 09:37:27,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:37:27,387 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:37:27,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 09:37:27,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:37:27,603 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:37:27,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:37:27,603 INFO L85 PathProgramCache]: Analyzing trace with hash -28042803, now seen corresponding path program 4 times [2022-07-22 09:37:27,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:37:27,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65891409] [2022-07-22 09:37:27,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:37:27,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:37:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:27,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 09:37:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:27,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 09:37:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:27,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 09:37:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-07-22 09:37:27,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:37:27,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65891409] [2022-07-22 09:37:27,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65891409] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:37:27,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661341257] [2022-07-22 09:37:27,770 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 09:37:27,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:37:27,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:37:27,772 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 09:37:27,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 09:37:27,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 09:37:27,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 09:37:27,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 09:37:27,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:37:27,938 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 316 proven. 66 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2022-07-22 09:37:27,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:37:28,017 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-07-22 09:37:28,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661341257] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 09:37:28,018 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 09:37:28,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-07-22 09:37:28,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873732642] [2022-07-22 09:37:28,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 09:37:28,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 09:37:28,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:37:28,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 09:37:28,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-22 09:37:28,020 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 09:37:28,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:37:28,068 INFO L93 Difference]: Finished difference Result 126 states and 155 transitions. [2022-07-22 09:37:28,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 09:37:28,069 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-07-22 09:37:28,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:37:28,070 INFO L225 Difference]: With dead ends: 126 [2022-07-22 09:37:28,070 INFO L226 Difference]: Without dead ends: 83 [2022-07-22 09:37:28,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-22 09:37:28,071 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 62 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:37:28,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 66 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:37:28,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-22 09:37:28,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-07-22 09:37:28,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.1666666666666667) internal successors, (91), 78 states have internal predecessors, (91), 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) [2022-07-22 09:37:28,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2022-07-22 09:37:28,078 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 124 [2022-07-22 09:37:28,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:37:28,079 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2022-07-22 09:37:28,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 09:37:28,079 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2022-07-22 09:37:28,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-22 09:37:28,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:37:28,081 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:37:28,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 09:37:28,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:37:28,299 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:37:28,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:37:28,299 INFO L85 PathProgramCache]: Analyzing trace with hash -281100999, now seen corresponding path program 5 times [2022-07-22 09:37:28,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:37:28,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221052791] [2022-07-22 09:37:28,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:37:28,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:37:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:28,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 09:37:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:28,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 09:37:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:28,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 09:37:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2022-07-22 09:37:28,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:37:28,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221052791] [2022-07-22 09:37:28,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221052791] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:37:28,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930944] [2022-07-22 09:37:28,482 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 09:37:28,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:37:28,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:37:28,484 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 09:37:28,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 09:37:28,789 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-07-22 09:37:28,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 09:37:28,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 09:37:28,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:37:28,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 850 proven. 4 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2022-07-22 09:37:28,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:37:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2022-07-22 09:37:28,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930944] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 09:37:28,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 09:37:28,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-07-22 09:37:28,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690404625] [2022-07-22 09:37:28,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 09:37:28,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 09:37:28,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:37:28,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 09:37:28,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-07-22 09:37:28,858 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 09:37:28,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:37:28,884 INFO L93 Difference]: Finished difference Result 142 states and 170 transitions. [2022-07-22 09:37:28,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 09:37:28,884 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 172 [2022-07-22 09:37:28,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:37:28,888 INFO L225 Difference]: With dead ends: 142 [2022-07-22 09:37:28,888 INFO L226 Difference]: Without dead ends: 91 [2022-07-22 09:37:28,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-07-22 09:37:28,892 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:37:28,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:37:28,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-07-22 09:37:28,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-07-22 09:37:28,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 86 states have internal predecessors, (99), 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) [2022-07-22 09:37:28,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2022-07-22 09:37:28,911 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 172 [2022-07-22 09:37:28,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:37:28,912 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2022-07-22 09:37:28,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 09:37:28,912 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2022-07-22 09:37:28,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-22 09:37:28,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:37:28,917 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:37:28,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 09:37:29,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-22 09:37:29,128 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:37:29,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:37:29,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1450203185, now seen corresponding path program 6 times [2022-07-22 09:37:29,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:37:29,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109896599] [2022-07-22 09:37:29,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:37:29,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:37:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:29,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 09:37:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:29,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 09:37:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:29,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 09:37:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2022-07-22 09:37:29,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:37:29,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109896599] [2022-07-22 09:37:29,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109896599] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:37:29,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891715561] [2022-07-22 09:37:29,306 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-22 09:37:29,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:37:29,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:37:29,308 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 09:37:29,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 09:37:29,667 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-07-22 09:37:29,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 09:37:29,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 09:37:29,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:37:29,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 850 proven. 36 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2022-07-22 09:37:29,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:37:29,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2022-07-22 09:37:29,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891715561] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 09:37:29,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 09:37:29,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-07-22 09:37:29,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412586001] [2022-07-22 09:37:29,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 09:37:29,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 09:37:29,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:37:29,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 09:37:29,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-22 09:37:29,759 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 09:37:29,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 09:37:29,784 INFO L93 Difference]: Finished difference Result 148 states and 175 transitions. [2022-07-22 09:37:29,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 09:37:29,785 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 180 [2022-07-22 09:37:29,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 09:37:29,787 INFO L225 Difference]: With dead ends: 148 [2022-07-22 09:37:29,787 INFO L226 Difference]: Without dead ends: 97 [2022-07-22 09:37:29,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 362 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-22 09:37:29,788 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 09:37:29,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 99 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 09:37:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-07-22 09:37:29,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-07-22 09:37:29,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.141304347826087) internal successors, (105), 92 states have internal predecessors, (105), 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) [2022-07-22 09:37:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2022-07-22 09:37:29,798 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 180 [2022-07-22 09:37:29,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 09:37:29,799 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2022-07-22 09:37:29,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 09:37:29,799 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2022-07-22 09:37:29,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-22 09:37:29,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 09:37:29,801 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 09:37:29,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-22 09:37:30,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 09:37:30,023 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 09:37:30,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 09:37:30,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1435992661, now seen corresponding path program 7 times [2022-07-22 09:37:30,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 09:37:30,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246151567] [2022-07-22 09:37:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 09:37:30,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 09:37:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:30,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 09:37:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:30,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 09:37:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:30,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-22 09:37:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 38 proven. 1214 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2022-07-22 09:37:30,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 09:37:30,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246151567] [2022-07-22 09:37:30,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246151567] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 09:37:30,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762420624] [2022-07-22 09:37:30,724 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-22 09:37:30,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 09:37:30,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 09:37:30,726 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 09:37:30,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 09:37:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 09:37:30,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 167 conjunts are in the unsatisfiable core [2022-07-22 09:37:30,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 09:37:34,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:34,344 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 09:37:34,345 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 146 treesize of output 116 [2022-07-22 09:37:35,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 09:37:35,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:35,701 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 09:37:35,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 141 treesize of output 118 [2022-07-22 09:37:36,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,034 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 09:37:36,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 108 [2022-07-22 09:37:36,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,196 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 09:37:36,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,216 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 09:37:36,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 108 [2022-07-22 09:37:36,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 09:37:36,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,555 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 09:37:36,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 117 treesize of output 98 [2022-07-22 09:37:36,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 09:37:36,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:36,824 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 09:37:36,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 86 [2022-07-22 09:37:37,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 09:37:37,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,052 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 09:37:37,053 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 74 [2022-07-22 09:37:37,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 09:37:37,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,281 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 09:37:37,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 62 [2022-07-22 09:37:37,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 09:37:37,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,464 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 09:37:37,464 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 3 case distinctions, treesize of input 57 treesize of output 50 [2022-07-22 09:37:37,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,631 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 09:37:37,631 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 30 [2022-07-22 09:37:37,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 09:37:37,730 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 09:37:37,731 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2022-07-22 09:37:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 8 proven. 1827 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-07-22 09:37:39,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 09:39:20,082 INFO L356 Elim1Store]: treesize reduction 432, result has 0.2 percent of original size [2022-07-22 09:39:20,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 136 treesize of output 1 [2022-07-22 09:39:25,788 INFO L356 Elim1Store]: treesize reduction 698, result has 28.4 percent of original size [2022-07-22 09:39:25,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 183 treesize of output 304 [2022-07-22 09:39:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 588 proven. 1145 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-07-22 09:39:28,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762420624] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 09:39:28,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 09:39:28,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 83, 72] total 163 [2022-07-22 09:39:28,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475554155] [2022-07-22 09:39:28,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 09:39:28,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 163 states [2022-07-22 09:39:28,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 09:39:28,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2022-07-22 09:39:28,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1323, Invalid=25049, Unknown=34, NotChecked=0, Total=26406 [2022-07-22 09:39:28,567 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand has 163 states, 160 states have (on average 1.81875) internal successors, (291), 159 states have internal predecessors, (291), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9)