./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/nla-digbench-scaling/dijkstra-u_unwindbound2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fdd63639d000bb02cdf5f126c366f5a853e2c8e4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 05:13:31,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 05:13:31,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 05:13:31,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 05:13:31,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 05:13:32,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 05:13:32,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 05:13:32,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 05:13:32,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 05:13:32,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 05:13:32,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 05:13:32,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 05:13:32,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 05:13:32,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 05:13:32,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 05:13:32,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 05:13:32,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 05:13:32,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 05:13:32,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 05:13:32,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 05:13:32,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 05:13:32,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 05:13:32,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 05:13:32,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 05:13:32,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 05:13:32,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 05:13:32,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 05:13:32,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 05:13:32,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 05:13:32,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 05:13:32,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 05:13:32,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 05:13:32,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 05:13:32,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 05:13:32,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 05:13:32,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 05:13:32,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 05:13:32,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 05:13:32,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 05:13:32,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 05:13:32,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 05:13:32,045 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 05:13:32,072 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 05:13:32,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 05:13:32,073 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 05:13:32,073 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 05:13:32,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 05:13:32,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 05:13:32,074 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 05:13:32,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 05:13:32,075 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 05:13:32,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 05:13:32,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 05:13:32,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 05:13:32,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 05:13:32,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 05:13:32,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 05:13:32,076 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 05:13:32,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 05:13:32,076 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 05:13:32,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 05:13:32,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 05:13:32,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 05:13:32,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 05:13:32,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 05:13:32,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 05:13:32,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 05:13:32,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 05:13:32,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 05:13:32,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 05:13:32,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 05:13:32,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 05:13:32,077 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdd63639d000bb02cdf5f126c366f5a853e2c8e4 [2021-08-26 05:13:32,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 05:13:32,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 05:13:32,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 05:13:32,342 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 05:13:32,342 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 05:13:32,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2021-08-26 05:13:32,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78bcd0f73/b0125b67808a48d09a642751919cc636/FLAG2b35768f3 [2021-08-26 05:13:32,715 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 05:13:32,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2021-08-26 05:13:32,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78bcd0f73/b0125b67808a48d09a642751919cc636/FLAG2b35768f3 [2021-08-26 05:13:33,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78bcd0f73/b0125b67808a48d09a642751919cc636 [2021-08-26 05:13:33,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 05:13:33,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 05:13:33,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 05:13:33,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 05:13:33,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 05:13:33,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:13:33" (1/1) ... [2021-08-26 05:13:33,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@340d2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:33, skipping insertion in model container [2021-08-26 05:13:33,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:13:33" (1/1) ... [2021-08-26 05:13:33,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 05:13:33,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 05:13:33,270 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c[533,546] [2021-08-26 05:13:33,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 05:13:33,307 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 05:13:33,328 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c[533,546] [2021-08-26 05:13:33,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 05:13:33,372 INFO L208 MainTranslator]: Completed translation [2021-08-26 05:13:33,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:33 WrapperNode [2021-08-26 05:13:33,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 05:13:33,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 05:13:33,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 05:13:33,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 05:13:33,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:33" (1/1) ... [2021-08-26 05:13:33,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:33" (1/1) ... [2021-08-26 05:13:33,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 05:13:33,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 05:13:33,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 05:13:33,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 05:13:33,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:33" (1/1) ... [2021-08-26 05:13:33,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:33" (1/1) ... [2021-08-26 05:13:33,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:33" (1/1) ... [2021-08-26 05:13:33,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:33" (1/1) ... [2021-08-26 05:13:33,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:33" (1/1) ... [2021-08-26 05:13:33,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:33" (1/1) ... [2021-08-26 05:13:33,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:33" (1/1) ... [2021-08-26 05:13:33,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 05:13:33,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 05:13:33,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 05:13:33,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 05:13:33,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:33" (1/1) ... [2021-08-26 05:13:33,446 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 05:13:33,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:33,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 05:13:33,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 05:13:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 05:13:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 05:13:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 05:13:33,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 05:13:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-08-26 05:13:37,797 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 05:13:37,798 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-08-26 05:13:37,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:13:37 BoogieIcfgContainer [2021-08-26 05:13:37,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 05:13:37,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 05:13:37,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 05:13:37,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 05:13:37,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 05:13:33" (1/3) ... [2021-08-26 05:13:37,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5d53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:13:37, skipping insertion in model container [2021-08-26 05:13:37,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:33" (2/3) ... [2021-08-26 05:13:37,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5d53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:13:37, skipping insertion in model container [2021-08-26 05:13:37,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:13:37" (3/3) ... [2021-08-26 05:13:37,804 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound2.c [2021-08-26 05:13:37,807 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 05:13:37,808 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-08-26 05:13:37,836 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 05:13:37,840 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 05:13:37,840 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-08-26 05:13:37,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 40 states have (on average 1.65) internal successors, (66), 49 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:37,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 05:13:37,852 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:37,852 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:37,853 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-08-26 05:13:37,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:37,856 INFO L82 PathProgramCache]: Analyzing trace with hash -578123657, now seen corresponding path program 1 times [2021-08-26 05:13:37,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:37,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734903230] [2021-08-26 05:13:37,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:37,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:13:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:13:37,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:37,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734903230] [2021-08-26 05:13:37,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734903230] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:13:37,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:13:37,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 05:13:38,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739363337] [2021-08-26 05:13:38,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 05:13:38,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:38,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 05:13:38,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 05:13:38,028 INFO L87 Difference]: Start difference. First operand has 50 states, 40 states have (on average 1.65) internal successors, (66), 49 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:38,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:38,043 INFO L93 Difference]: Finished difference Result 97 states and 128 transitions. [2021-08-26 05:13:38,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 05:13:38,044 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-26 05:13:38,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:38,050 INFO L225 Difference]: With dead ends: 97 [2021-08-26 05:13:38,050 INFO L226 Difference]: Without dead ends: 46 [2021-08-26 05:13:38,052 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 05:13:38,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-08-26 05:13:38,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-08-26 05:13:38,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 45 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:38,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-08-26 05:13:38,076 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 9 [2021-08-26 05:13:38,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:38,076 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-08-26 05:13:38,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:38,077 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-08-26 05:13:38,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 05:13:38,078 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:38,078 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:38,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 05:13:38,079 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-08-26 05:13:38,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:38,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1987056657, now seen corresponding path program 1 times [2021-08-26 05:13:38,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:38,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960938596] [2021-08-26 05:13:38,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:38,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:13:38,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:13:38,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:38,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960938596] [2021-08-26 05:13:38,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960938596] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:13:38,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:13:38,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 05:13:38,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83385540] [2021-08-26 05:13:38,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:13:38,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:38,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:13:38,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:13:38,162 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:38,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:38,184 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2021-08-26 05:13:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:13:38,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-26 05:13:38,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:38,186 INFO L225 Difference]: With dead ends: 87 [2021-08-26 05:13:38,186 INFO L226 Difference]: Without dead ends: 48 [2021-08-26 05:13:38,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.2ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:13:38,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-08-26 05:13:38,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-08-26 05:13:38,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-08-26 05:13:38,198 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 10 [2021-08-26 05:13:38,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:38,199 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-08-26 05:13:38,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:38,199 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-08-26 05:13:38,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 05:13:38,200 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:38,200 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:38,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 05:13:38,201 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-08-26 05:13:38,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:38,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1420419469, now seen corresponding path program 1 times [2021-08-26 05:13:38,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:38,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492767658] [2021-08-26 05:13:38,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:38,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:13:38,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:13:38,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:38,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492767658] [2021-08-26 05:13:38,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492767658] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:13:38,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:13:38,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 05:13:38,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904630169] [2021-08-26 05:13:38,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 05:13:38,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:38,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 05:13:38,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:13:38,414 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:40,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:40,526 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2021-08-26 05:13:40,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 05:13:40,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-26 05:13:40,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:40,528 INFO L225 Difference]: With dead ends: 128 [2021-08-26 05:13:40,528 INFO L226 Difference]: Without dead ends: 89 [2021-08-26 05:13:40,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:13:40,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-08-26 05:13:40,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 63. [2021-08-26 05:13:40,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 62 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:40,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2021-08-26 05:13:40,539 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 11 [2021-08-26 05:13:40,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:40,539 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2021-08-26 05:13:40,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:40,539 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2021-08-26 05:13:40,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 05:13:40,539 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:40,539 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:40,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 05:13:40,540 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-08-26 05:13:40,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:40,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1083313625, now seen corresponding path program 1 times [2021-08-26 05:13:40,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:40,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483917217] [2021-08-26 05:13:40,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:40,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:40,547 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:13:40,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1423099919] [2021-08-26 05:13:40,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:40,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:40,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:40,554 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:13:40,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 05:13:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:13:40,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-26 05:13:40,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:13:40,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:13:40,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:40,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483917217] [2021-08-26 05:13:40,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:13:40,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423099919] [2021-08-26 05:13:40,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423099919] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:13:40,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:13:40,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:13:40,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119280254] [2021-08-26 05:13:40,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 05:13:40,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:40,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 05:13:40,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:13:40,645 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:40,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:40,658 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2021-08-26 05:13:40,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 05:13:40,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-26 05:13:40,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:40,659 INFO L225 Difference]: With dead ends: 76 [2021-08-26 05:13:40,659 INFO L226 Difference]: Without dead ends: 64 [2021-08-26 05:13:40,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:13:40,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-26 05:13:40,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2021-08-26 05:13:40,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.3518518518518519) internal successors, (73), 62 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:40,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2021-08-26 05:13:40,664 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 12 [2021-08-26 05:13:40,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:40,664 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2021-08-26 05:13:40,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:40,664 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2021-08-26 05:13:40,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 05:13:40,664 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:40,664 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:40,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-26 05:13:40,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:40,873 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-08-26 05:13:40,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:40,873 INFO L82 PathProgramCache]: Analyzing trace with hash 776646742, now seen corresponding path program 1 times [2021-08-26 05:13:40,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:40,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369009386] [2021-08-26 05:13:40,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:40,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:40,881 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:13:40,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834747564] [2021-08-26 05:13:40,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:40,881 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:40,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:40,882 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) [2021-08-26 05:13:40,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 05:13:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:13:40,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 05:13:40,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:13:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:13:41,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:41,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369009386] [2021-08-26 05:13:41,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:13:41,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834747564] [2021-08-26 05:13:41,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834747564] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:13:41,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:13:41,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:13:41,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776596189] [2021-08-26 05:13:41,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:13:41,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:41,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:13:41,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:13:41,084 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:44,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:44,705 INFO L93 Difference]: Finished difference Result 108 states and 122 transitions. [2021-08-26 05:13:44,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 05:13:44,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-26 05:13:44,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:44,706 INFO L225 Difference]: With dead ends: 108 [2021-08-26 05:13:44,706 INFO L226 Difference]: Without dead ends: 92 [2021-08-26 05:13:44,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:13:44,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-08-26 05:13:44,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2021-08-26 05:13:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 71 states have (on average 1.2816901408450705) internal successors, (91), 79 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2021-08-26 05:13:44,717 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 13 [2021-08-26 05:13:44,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:44,717 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2021-08-26 05:13:44,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:44,717 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2021-08-26 05:13:44,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 05:13:44,717 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:44,718 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:44,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 05:13:44,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:44,918 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-08-26 05:13:44,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:44,919 INFO L82 PathProgramCache]: Analyzing trace with hash 2047013432, now seen corresponding path program 1 times [2021-08-26 05:13:44,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:44,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426966093] [2021-08-26 05:13:44,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:44,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:13:44,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:13:44,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:44,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426966093] [2021-08-26 05:13:44,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426966093] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:13:44,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559712048] [2021-08-26 05:13:44,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:44,979 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:44,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:44,980 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) [2021-08-26 05:13:44,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 05:13:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:13:45,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-26 05:13:45,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:13:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:13:45,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559712048] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:13:45,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 05:13:45,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-08-26 05:13:45,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299506039] [2021-08-26 05:13:45,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:13:45,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:45,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:13:45,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:13:45,073 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:45,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:45,089 INFO L93 Difference]: Finished difference Result 138 states and 157 transitions. [2021-08-26 05:13:45,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 05:13:45,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-26 05:13:45,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:45,090 INFO L225 Difference]: With dead ends: 138 [2021-08-26 05:13:45,090 INFO L226 Difference]: Without dead ends: 82 [2021-08-26 05:13:45,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 19.0ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:13:45,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-08-26 05:13:45,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-08-26 05:13:45,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 73 states have (on average 1.273972602739726) internal successors, (93), 81 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:45,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2021-08-26 05:13:45,095 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 13 [2021-08-26 05:13:45,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:45,095 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2021-08-26 05:13:45,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:45,095 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2021-08-26 05:13:45,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 05:13:45,096 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:45,096 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:45,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 05:13:45,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:45,313 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-08-26 05:13:45,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:45,313 INFO L82 PathProgramCache]: Analyzing trace with hash -918298294, now seen corresponding path program 1 times [2021-08-26 05:13:45,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:45,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307063906] [2021-08-26 05:13:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:45,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:13:45,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:13:45,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:45,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307063906] [2021-08-26 05:13:45,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307063906] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:13:45,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696562895] [2021-08-26 05:13:45,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:45,377 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:45,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:45,378 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) [2021-08-26 05:13:45,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 05:13:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:13:45,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 05:13:45,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:13:45,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:13:45,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696562895] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:13:45,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:13:45,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2021-08-26 05:13:45,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575130594] [2021-08-26 05:13:45,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:13:45,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:45,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:13:45,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:13:45,512 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:45,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:45,535 INFO L93 Difference]: Finished difference Result 90 states and 100 transitions. [2021-08-26 05:13:45,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 05:13:45,536 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-26 05:13:45,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:45,536 INFO L225 Difference]: With dead ends: 90 [2021-08-26 05:13:45,536 INFO L226 Difference]: Without dead ends: 34 [2021-08-26 05:13:45,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 26.5ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:13:45,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-26 05:13:45,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-08-26 05:13:45,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:45,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2021-08-26 05:13:45,539 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 14 [2021-08-26 05:13:45,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:45,540 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2021-08-26 05:13:45,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:45,540 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2021-08-26 05:13:45,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 05:13:45,540 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:45,540 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:45,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-26 05:13:45,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:45,761 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-08-26 05:13:45,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:45,761 INFO L82 PathProgramCache]: Analyzing trace with hash -966633767, now seen corresponding path program 1 times [2021-08-26 05:13:45,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:45,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284552207] [2021-08-26 05:13:45,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:45,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:45,767 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:13:45,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950247297] [2021-08-26 05:13:45,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:45,768 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:45,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:45,779 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) [2021-08-26 05:13:45,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 05:13:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:13:45,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 05:13:45,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:13:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:13:45,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:45,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284552207] [2021-08-26 05:13:45,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:13:45,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950247297] [2021-08-26 05:13:45,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950247297] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:13:45,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:13:45,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:13:45,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337468211] [2021-08-26 05:13:45,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:13:45,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:45,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:13:45,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:13:45,998 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:46,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:46,113 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2021-08-26 05:13:46,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:13:46,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-26 05:13:46,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:46,113 INFO L225 Difference]: With dead ends: 38 [2021-08-26 05:13:46,113 INFO L226 Difference]: Without dead ends: 18 [2021-08-26 05:13:46,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:13:46,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-08-26 05:13:46,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-08-26 05:13:46,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:46,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-08-26 05:13:46,115 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2021-08-26 05:13:46,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:46,115 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-08-26 05:13:46,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:46,115 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-08-26 05:13:46,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 05:13:46,115 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:46,116 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:46,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 05:13:46,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:46,316 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-08-26 05:13:46,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:46,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1597540912, now seen corresponding path program 1 times [2021-08-26 05:13:46,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:46,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320541552] [2021-08-26 05:13:46,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:46,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:46,330 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:13:46,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902197510] [2021-08-26 05:13:46,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:46,330 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:46,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:46,336 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) [2021-08-26 05:13:46,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-26 05:13:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:13:46,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 05:13:46,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:13:46,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-26 05:13:46,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:46,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320541552] [2021-08-26 05:13:46,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:13:46,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902197510] [2021-08-26 05:13:46,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902197510] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:13:46,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:13:46,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:13:46,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334193961] [2021-08-26 05:13:46,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:13:46,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:46,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:13:46,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:13:46,528 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:46,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:46,537 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-08-26 05:13:46,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:13:46,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-26 05:13:46,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:46,537 INFO L225 Difference]: With dead ends: 18 [2021-08-26 05:13:46,537 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 05:13:46,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:13:46,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 05:13:46,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 05:13:46,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:46,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 05:13:46,538 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-08-26 05:13:46,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:46,538 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 05:13:46,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:46,539 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 05:13:46,539 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 05:13:46,540 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:13:46,540 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:13:46,541 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:13:46,541 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:13:46,541 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:13:46,541 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:13:46,541 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:13:46,541 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:13:46,541 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:13:46,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-26 05:13:46,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:46,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 05:13:46,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:46,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:46,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:46,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:46,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:46,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:46,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:46,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:46,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:46,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:46,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:46,977 INFO L860 garLoopResultBuilder]: At program point L60(lines 20 61) the Hoare annotation is: true [2021-08-26 05:13:46,977 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-26 05:13:46,977 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2021-08-26 05:13:46,977 INFO L857 garLoopResultBuilder]: For program point L52-2(lines 20 61) no Hoare annotation was computed. [2021-08-26 05:13:46,977 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-26 05:13:46,978 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 05:13:46,978 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 05:13:46,978 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-08-26 05:13:46,978 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (and (<= 2 ~counter~0) (= ULTIMATE.start_main_~p~0 0) (<= (+ ULTIMATE.start_main_~r~0 (* 4294967296 (div (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~p~0 2)) 4294967296)) 1 (* 4294967296 (div ULTIMATE.start_main_~q~0 4294967296))) (+ ULTIMATE.start_main_~q~0 (* 4294967296 (div ULTIMATE.start_main_~r~0 4294967296)))) (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) [2021-08-26 05:13:46,978 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-08-26 05:13:46,978 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (and (<= 2 ~counter~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~p~0 0) (<= (+ ULTIMATE.start_main_~r~0 (* 4294967296 (div (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~p~0 2)) 4294967296)) 1 (* 4294967296 (div ULTIMATE.start_main_~q~0 4294967296))) (+ ULTIMATE.start_main_~q~0 (* 4294967296 (div ULTIMATE.start_main_~r~0 4294967296)))) (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) [2021-08-26 05:13:46,978 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-08-26 05:13:46,978 INFO L853 garLoopResultBuilder]: At program point L12-8(lines 11 17) the Hoare annotation is: (and (<= 2 ~counter~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~p~0 0) (<= (+ ULTIMATE.start_main_~r~0 (* 4294967296 (div (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~p~0 2)) 4294967296)) 1 (* 4294967296 (div ULTIMATE.start_main_~q~0 4294967296))) (+ ULTIMATE.start_main_~q~0 (* 4294967296 (div ULTIMATE.start_main_~r~0 4294967296)))) (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) [2021-08-26 05:13:46,978 INFO L857 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-08-26 05:13:46,978 INFO L853 garLoopResultBuilder]: At program point L12-11(lines 11 17) the Hoare annotation is: (and (<= 2 ~counter~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~p~0 0) (<= (+ ULTIMATE.start_main_~r~0 (* 4294967296 (div (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~p~0 2)) 4294967296)) 1 (* 4294967296 (div ULTIMATE.start_main_~q~0 4294967296))) (+ ULTIMATE.start_main_~q~0 (* 4294967296 (div ULTIMATE.start_main_~r~0 4294967296)))) (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) [2021-08-26 05:13:46,978 INFO L857 garLoopResultBuilder]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-08-26 05:13:46,978 INFO L853 garLoopResultBuilder]: At program point L12-14(lines 11 17) the Hoare annotation is: (and (<= 2 ~counter~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~p~0 0) (<= (+ ULTIMATE.start_main_~r~0 (* 4294967296 (div (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~p~0 2)) 4294967296)) 1 (* 4294967296 (div ULTIMATE.start_main_~q~0 4294967296))) (+ ULTIMATE.start_main_~q~0 (* 4294967296 (div ULTIMATE.start_main_~r~0 4294967296)))) (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) [2021-08-26 05:13:46,978 INFO L857 garLoopResultBuilder]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-08-26 05:13:46,978 INFO L853 garLoopResultBuilder]: At program point L12-17(lines 46 47) the Hoare annotation is: (and (<= 2 ~counter~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~p~0 0) (<= (+ ULTIMATE.start_main_~r~0 (* 4294967296 (div (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~p~0 2)) 4294967296)) 1 (* 4294967296 (div ULTIMATE.start_main_~q~0 4294967296))) (+ ULTIMATE.start_main_~q~0 (* 4294967296 (div ULTIMATE.start_main_~r~0 4294967296)))) (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) [2021-08-26 05:13:46,978 INFO L857 garLoopResultBuilder]: For program point L12-18(lines 12 15) no Hoare annotation was computed. [2021-08-26 05:13:46,979 INFO L853 garLoopResultBuilder]: At program point L12-20(lines 11 17) the Hoare annotation is: (and (= ULTIMATE.start_main_~p~0 0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) [2021-08-26 05:13:46,979 INFO L857 garLoopResultBuilder]: For program point L12-21(lines 12 15) no Hoare annotation was computed. [2021-08-26 05:13:46,979 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-26 05:13:46,979 INFO L853 garLoopResultBuilder]: At program point L12-23(lines 11 17) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~p~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) [2021-08-26 05:13:46,979 INFO L857 garLoopResultBuilder]: For program point L12-24(lines 12 15) no Hoare annotation was computed. [2021-08-26 05:13:46,979 INFO L860 garLoopResultBuilder]: At program point L12-26(lines 11 17) the Hoare annotation is: true [2021-08-26 05:13:46,979 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-08-26 05:13:46,979 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-08-26 05:13:46,979 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-08-26 05:13:46,979 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-08-26 05:13:46,979 INFO L857 garLoopResultBuilder]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-08-26 05:13:46,979 INFO L857 garLoopResultBuilder]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-08-26 05:13:46,979 INFO L857 garLoopResultBuilder]: For program point L13-6(lines 13 14) no Hoare annotation was computed. [2021-08-26 05:13:46,979 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 56) no Hoare annotation was computed. [2021-08-26 05:13:46,979 INFO L857 garLoopResultBuilder]: For program point L13-7(lines 13 14) no Hoare annotation was computed. [2021-08-26 05:13:46,979 INFO L857 garLoopResultBuilder]: For program point L13-8(lines 13 14) no Hoare annotation was computed. [2021-08-26 05:13:46,979 INFO L857 garLoopResultBuilder]: For program point L38-2(lines 38 56) no Hoare annotation was computed. [2021-08-26 05:13:46,979 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-26 05:13:46,979 INFO L857 garLoopResultBuilder]: For program point L30-1(lines 30 35) no Hoare annotation was computed. [2021-08-26 05:13:46,979 INFO L853 garLoopResultBuilder]: At program point L30-3(lines 30 35) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~p~0 0)) (.cse1 (= ULTIMATE.start_main_~h~0 0)) (.cse2 (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0))) (or (and .cse0 (<= 1 ~counter~0) .cse1 .cse2) (and .cse0 (= ~counter~0 0) (= ULTIMATE.start_main_~q~0 1) .cse1 .cse2))) [2021-08-26 05:13:46,979 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2021-08-26 05:13:46,979 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-26 05:13:46,979 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 05:13:46,980 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-26 05:13:46,980 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-26 05:13:46,980 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-08-26 05:13:46,980 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 05:13:46,980 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-26 05:13:46,980 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-08-26 05:13:46,980 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-26 05:13:46,982 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 05:13:47,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 05:13:47 BoogieIcfgContainer [2021-08-26 05:13:47,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 05:13:47,012 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 05:13:47,012 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 05:13:47,013 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 05:13:47,013 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:13:37" (3/4) ... [2021-08-26 05:13:47,015 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 05:13:47,021 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-08-26 05:13:47,022 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 05:13:47,022 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 05:13:47,022 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 05:13:47,055 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 05:13:47,055 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 05:13:47,056 INFO L168 Benchmark]: Toolchain (without parser) took 13900.77 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 39.6 MB in the beginning and 31.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. [2021-08-26 05:13:47,056 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 60.8 MB. Free memory was 42.9 MB in the beginning and 42.9 MB in the end (delta: 42.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 05:13:47,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.82 ms. Allocated memory is still 60.8 MB. Free memory was 39.5 MB in the beginning and 43.7 MB in the end (delta: -4.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 05:13:47,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.27 ms. Allocated memory is still 60.8 MB. Free memory was 43.7 MB in the beginning and 41.8 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 05:13:47,057 INFO L168 Benchmark]: Boogie Preprocessor took 26.79 ms. Allocated memory is still 60.8 MB. Free memory was 41.8 MB in the beginning and 40.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 05:13:47,057 INFO L168 Benchmark]: RCFGBuilder took 4357.16 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 40.5 MB in the beginning and 53.2 MB in the end (delta: -12.7 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2021-08-26 05:13:47,058 INFO L168 Benchmark]: TraceAbstraction took 9211.68 ms. Allocated memory is still 77.6 MB. Free memory was 52.9 MB in the beginning and 35.8 MB in the end (delta: 17.1 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. [2021-08-26 05:13:47,059 INFO L168 Benchmark]: Witness Printer took 42.78 ms. Allocated memory is still 77.6 MB. Free memory was 35.1 MB in the beginning and 31.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 05:13:47,060 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 60.8 MB. Free memory was 42.9 MB in the beginning and 42.9 MB in the end (delta: 42.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 216.82 ms. Allocated memory is still 60.8 MB. Free memory was 39.5 MB in the beginning and 43.7 MB in the end (delta: -4.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.27 ms. Allocated memory is still 60.8 MB. Free memory was 43.7 MB in the beginning and 41.8 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.79 ms. Allocated memory is still 60.8 MB. Free memory was 41.8 MB in the beginning and 40.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4357.16 ms. Allocated memory was 60.8 MB in the beginning and 77.6 MB in the end (delta: 16.8 MB). Free memory was 40.5 MB in the beginning and 53.2 MB in the end (delta: -12.7 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9211.68 ms. Allocated memory is still 77.6 MB. Free memory was 52.9 MB in the beginning and 35.8 MB in the end (delta: 17.1 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. * Witness Printer took 42.78 ms. Allocated memory is still 77.6 MB. Free memory was 35.1 MB in the beginning and 31.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 50 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 9147.5ms, OverallIterations: 9, TraceHistogramMax: 2, EmptinessCheckTime: 8.7ms, AutomataDifference: 5996.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 231.8ms, InitialAbstractionConstructionTime: 6.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 328 SDtfs, 159 SDslu, 523 SDs, 0 SdLazy, 223 SolverSat, 59 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 5747.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 150.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=6, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 59.7ms AutomataMinimizationTime, 9 MinimizatonAttempts, 39 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 24 NumberOfFragments, 318 HoareAnnotationTreeSize, 11 FomulaSimplifications, 110 FormulaSimplificationTreeSizeReduction, 18.3ms HoareSimplificationTime, 11 FomulaSimplificationsInter, 172 FormulaSimplificationTreeSizeReductionInter, 208.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 49.3ms SsaConstructionTime, 219.2ms SatisfiabilityAnalysisTime, 873.5ms InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 562 SizeOfPredicates, 20 NumberOfNonLiveVariables, 422 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 7/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((2 <= counter && p == 0) && r + 4294967296 * ((q + p * 2) / 4294967296) + 1 + 4294967296 * (q / 4294967296) <= q + 4294967296 * (r / 4294967296)) && q == 1) && h == 0) && !(0 == cond)) && n == r - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((2 <= counter && 1 <= cond) && p == 0) && r + 4294967296 * ((q + p * 2) / 4294967296) + 1 + 4294967296 * (q / 4294967296) <= q + 4294967296 * (r / 4294967296)) && q == 1) && h == 0) && n == r - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (1 <= cond && p == 0) && n == r - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((2 <= counter && 1 <= cond) && p == 0) && r + 4294967296 * ((q + p * 2) / 4294967296) + 1 + 4294967296 * (q / 4294967296) <= q + 4294967296 * (r / 4294967296)) && q == 1) && h == 0) && n == r - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (p == 0 && !(0 == cond)) && n == r - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((2 <= counter && 1 <= cond) && p == 0) && r + 4294967296 * ((q + p * 2) / 4294967296) + 1 + 4294967296 * (q / 4294967296) <= q + 4294967296 * (r / 4294967296)) && q == 1) && h == 0) && n == r - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((2 <= counter && 1 <= cond) && p == 0) && r + 4294967296 * ((q + p * 2) / 4294967296) + 1 + 4294967296 * (q / 4294967296) <= q + 4294967296 * (r / 4294967296)) && q == 1) && h == 0) && n == r - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((p == 0 && 1 <= counter) && h == 0) && n == r) || ((((p == 0 && counter == 0) && q == 1) && h == 0) && n == r) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((2 <= counter && 1 <= cond) && p == 0) && r + 4294967296 * ((q + p * 2) / 4294967296) + 1 + 4294967296 * (q / 4294967296) <= q + 4294967296 * (r / 4294967296)) && q == 1) && h == 0) && n == r RESULT: Ultimate proved your program to be correct! [2021-08-26 05:13:47,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...