/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:01:58,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:01:58,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:01:58,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:01:58,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:01:58,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:01:58,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:01:58,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:01:58,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:01:58,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:01:58,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:01:58,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:01:58,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:01:58,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:01:58,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:01:58,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:01:58,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:01:58,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:01:58,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:01:58,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:01:58,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:01:58,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:01:58,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:01:58,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:01:58,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:01:58,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:01:58,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:01:58,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:01:58,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:01:58,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:01:58,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:01:58,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:01:58,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:01:58,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:01:58,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:01:58,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:01:58,296 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:01:58,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:01:58,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:01:58,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:01:58,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:01:58,300 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 18:01:58,343 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:01:58,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:01:58,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:01:58,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:01:58,345 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:01:58,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:01:58,345 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:01:58,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:01:58,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:01:58,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:01:58,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:01:58,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:01:58,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:01:58,346 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:01:58,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:01:58,347 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:01:58,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:01:58,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:01:58,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:01:58,348 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:01:58,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:01:58,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:01:58,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:01:58,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:01:58,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:01:58,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:01:58,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:01:58,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:01:58,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:01:58,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 18:01:58,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:01:58,683 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:01:58,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:01:58,687 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:01:58,688 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:01:58,689 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_4.c [2020-08-18 18:01:58,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6b047b9c/aa38f9d2a4bf459ab6dae7f687bcd7f4/FLAG0461f477b [2020-08-18 18:01:59,287 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:01:59,288 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/ofuf_4.c [2020-08-18 18:01:59,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6b047b9c/aa38f9d2a4bf459ab6dae7f687bcd7f4/FLAG0461f477b [2020-08-18 18:01:59,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6b047b9c/aa38f9d2a4bf459ab6dae7f687bcd7f4 [2020-08-18 18:01:59,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:01:59,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:01:59,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:01:59,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:01:59,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:01:59,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:01:59" (1/1) ... [2020-08-18 18:01:59,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@752f575a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:01:59, skipping insertion in model container [2020-08-18 18:01:59,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:01:59" (1/1) ... [2020-08-18 18:01:59,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:01:59,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:02:00,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:02:00,049 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:02:00,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:02:00,147 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:02:00,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:02:00 WrapperNode [2020-08-18 18:02:00,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:02:00,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:02:00,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:02:00,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:02:00,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:02:00" (1/1) ... [2020-08-18 18:02:00,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:02:00" (1/1) ... [2020-08-18 18:02:00,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:02:00" (1/1) ... [2020-08-18 18:02:00,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:02:00" (1/1) ... [2020-08-18 18:02:00,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:02:00" (1/1) ... [2020-08-18 18:02:00,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:02:00" (1/1) ... [2020-08-18 18:02:00,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:02:00" (1/1) ... [2020-08-18 18:02:00,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:02:00,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:02:00,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:02:00,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:02:00,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:02:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:02:00,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:02:00,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:02:00,346 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 18:02:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-08-18 18:02:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2020-08-18 18:02:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2020-08-18 18:02:00,348 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2020-08-18 18:02:00,348 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2020-08-18 18:02:00,348 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2020-08-18 18:02:00,348 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2020-08-18 18:02:00,349 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2020-08-18 18:02:00,349 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:02:00,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 18:02:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:02:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 18:02:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 18:02:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-08-18 18:02:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-08-18 18:02:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-08-18 18:02:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2020-08-18 18:02:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2020-08-18 18:02:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2020-08-18 18:02:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2020-08-18 18:02:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:02:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2020-08-18 18:02:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2020-08-18 18:02:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-08-18 18:02:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:02:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 18:02:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:02:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 18:02:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:02:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 18:02:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:02:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:02:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:02:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 18:02:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:02:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 18:02:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:02:01,486 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:02:01,486 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-08-18 18:02:01,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:02:01 BoogieIcfgContainer [2020-08-18 18:02:01,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:02:01,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:02:01,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:02:01,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:02:01,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:01:59" (1/3) ... [2020-08-18 18:02:01,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2459cfbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:02:01, skipping insertion in model container [2020-08-18 18:02:01,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:02:00" (2/3) ... [2020-08-18 18:02:01,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2459cfbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:02:01, skipping insertion in model container [2020-08-18 18:02:01,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:02:01" (3/3) ... [2020-08-18 18:02:01,502 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_4.c [2020-08-18 18:02:01,513 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:02:01,521 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:02:01,532 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:02:01,556 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:02:01,556 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:02:01,556 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:02:01,556 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:02:01,557 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:02:01,557 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:02:01,557 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:02:01,557 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:02:01,579 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-08-18 18:02:01,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-08-18 18:02:01,591 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:02:01,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:02:01,593 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:02:01,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:02:01,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1328586124, now seen corresponding path program 1 times [2020-08-18 18:02:01,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:02:01,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458979983] [2020-08-18 18:02:01,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:02:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:02,112 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-08-18 18:02:02,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:02:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:02,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 18:02:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:02,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-18 18:02:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:02,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:02:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:02:02,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458979983] [2020-08-18 18:02:02,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:02:02,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:02:02,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423049637] [2020-08-18 18:02:02,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:02:02,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:02:02,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:02:02,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:02:02,242 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 5 states. [2020-08-18 18:02:02,399 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-08-18 18:02:05,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:02:05,359 INFO L93 Difference]: Finished difference Result 267 states and 410 transitions. [2020-08-18 18:02:05,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:02:05,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-08-18 18:02:05,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:02:05,384 INFO L225 Difference]: With dead ends: 267 [2020-08-18 18:02:05,384 INFO L226 Difference]: Without dead ends: 142 [2020-08-18 18:02:05,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:02:05,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-18 18:02:05,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 121. [2020-08-18 18:02:05,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-18 18:02:05,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 168 transitions. [2020-08-18 18:02:05,511 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 168 transitions. Word has length 43 [2020-08-18 18:02:05,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:02:05,512 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 168 transitions. [2020-08-18 18:02:05,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:02:05,512 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 168 transitions. [2020-08-18 18:02:05,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-18 18:02:05,523 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:02:05,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:02:05,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:02:05,524 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:02:05,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:02:05,525 INFO L82 PathProgramCache]: Analyzing trace with hash -294008176, now seen corresponding path program 1 times [2020-08-18 18:02:05,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:02:05,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941603765] [2020-08-18 18:02:05,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:02:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:05,757 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-08-18 18:02:05,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:02:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:05,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 18:02:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:05,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 18:02:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:05,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 18:02:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:05,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:02:05,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941603765] [2020-08-18 18:02:05,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:02:05,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 18:02:05,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048167276] [2020-08-18 18:02:05,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:02:05,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:02:05,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:02:05,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:02:05,852 INFO L87 Difference]: Start difference. First operand 121 states and 168 transitions. Second operand 6 states. [2020-08-18 18:02:05,963 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-08-18 18:02:07,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:02:07,014 INFO L93 Difference]: Finished difference Result 267 states and 385 transitions. [2020-08-18 18:02:07,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:02:07,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-08-18 18:02:07,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:02:07,023 INFO L225 Difference]: With dead ends: 267 [2020-08-18 18:02:07,024 INFO L226 Difference]: Without dead ends: 162 [2020-08-18 18:02:07,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:02:07,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-18 18:02:07,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 123. [2020-08-18 18:02:07,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 18:02:07,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 170 transitions. [2020-08-18 18:02:07,051 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 170 transitions. Word has length 45 [2020-08-18 18:02:07,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:02:07,051 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 170 transitions. [2020-08-18 18:02:07,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:02:07,052 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 170 transitions. [2020-08-18 18:02:07,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 18:02:07,053 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:02:07,054 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:02:07,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:02:07,054 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:02:07,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:02:07,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1235066606, now seen corresponding path program 2 times [2020-08-18 18:02:07,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:02:07,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1654474866] [2020-08-18 18:02:07,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:02:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:07,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:02:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:07,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 18:02:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:07,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-18 18:02:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:07,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 18:02:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:07,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:02:07,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1654474866] [2020-08-18 18:02:07,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:02:07,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 18:02:07,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135765865] [2020-08-18 18:02:07,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 18:02:07,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:02:07,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 18:02:07,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:02:07,306 INFO L87 Difference]: Start difference. First operand 123 states and 170 transitions. Second operand 7 states. [2020-08-18 18:02:07,448 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-08-18 18:02:08,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:02:08,673 INFO L93 Difference]: Finished difference Result 288 states and 418 transitions. [2020-08-18 18:02:08,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 18:02:08,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-08-18 18:02:08,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:02:08,677 INFO L225 Difference]: With dead ends: 288 [2020-08-18 18:02:08,677 INFO L226 Difference]: Without dead ends: 183 [2020-08-18 18:02:08,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:02:08,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-08-18 18:02:08,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 125. [2020-08-18 18:02:08,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-18 18:02:08,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 172 transitions. [2020-08-18 18:02:08,709 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 172 transitions. Word has length 47 [2020-08-18 18:02:08,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:02:08,710 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 172 transitions. [2020-08-18 18:02:08,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 18:02:08,710 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 172 transitions. [2020-08-18 18:02:08,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-18 18:02:08,713 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:02:08,713 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:02:08,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:02:08,714 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:02:08,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:02:08,714 INFO L82 PathProgramCache]: Analyzing trace with hash 645881620, now seen corresponding path program 3 times [2020-08-18 18:02:08,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:02:08,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837651407] [2020-08-18 18:02:08,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:02:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:08,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:02:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:08,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 18:02:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:09,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-18 18:02:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:09,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:02:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:02:09,034 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:02:09,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837651407] [2020-08-18 18:02:09,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:02:09,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 18:02:09,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021742726] [2020-08-18 18:02:09,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:02:09,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:02:09,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:02:09,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:02:09,037 INFO L87 Difference]: Start difference. First operand 125 states and 172 transitions. Second operand 8 states. [2020-08-18 18:02:10,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:02:10,531 INFO L93 Difference]: Finished difference Result 309 states and 451 transitions. [2020-08-18 18:02:10,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:02:10,549 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-08-18 18:02:10,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:02:10,551 INFO L225 Difference]: With dead ends: 309 [2020-08-18 18:02:10,551 INFO L226 Difference]: Without dead ends: 204 [2020-08-18 18:02:10,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:02:10,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-08-18 18:02:10,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 127. [2020-08-18 18:02:10,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-18 18:02:10,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 174 transitions. [2020-08-18 18:02:10,577 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 174 transitions. Word has length 49 [2020-08-18 18:02:10,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:02:10,578 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 174 transitions. [2020-08-18 18:02:10,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:02:10,578 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 174 transitions. [2020-08-18 18:02:10,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 18:02:10,579 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:02:10,579 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:02:10,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:02:10,580 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:02:10,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:02:10,580 INFO L82 PathProgramCache]: Analyzing trace with hash 55895190, now seen corresponding path program 4 times [2020-08-18 18:02:10,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:02:10,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244180015] [2020-08-18 18:02:10,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:02:10,604 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-18 18:02:10,605 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-18 18:02:10,605 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:02:10,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:02:10,632 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-18 18:02:10,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:02:10 BoogieIcfgContainer [2020-08-18 18:02:10,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:02:10,634 INFO L168 Benchmark]: Toolchain (without parser) took 11032.92 ms. Allocated memory was 142.6 MB in the beginning and 329.8 MB in the end (delta: 187.2 MB). Free memory was 104.4 MB in the beginning and 282.0 MB in the end (delta: -177.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-18 18:02:10,635 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 18:02:10,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 545.60 ms. Allocated memory was 142.6 MB in the beginning and 205.0 MB in the end (delta: 62.4 MB). Free memory was 104.2 MB in the beginning and 174.9 MB in the end (delta: -70.7 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-18 18:02:10,637 INFO L168 Benchmark]: Boogie Preprocessor took 105.47 ms. Allocated memory is still 205.0 MB. Free memory was 174.9 MB in the beginning and 170.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 18:02:10,638 INFO L168 Benchmark]: RCFGBuilder took 1239.10 ms. Allocated memory is still 205.0 MB. Free memory was 170.8 MB in the beginning and 107.7 MB in the end (delta: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2020-08-18 18:02:10,639 INFO L168 Benchmark]: TraceAbstraction took 9138.16 ms. Allocated memory was 205.0 MB in the beginning and 329.8 MB in the end (delta: 124.8 MB). Free memory was 107.1 MB in the beginning and 282.0 MB in the end (delta: -174.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 18:02:10,642 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 545.60 ms. Allocated memory was 142.6 MB in the beginning and 205.0 MB in the end (delta: 62.4 MB). Free memory was 104.2 MB in the beginning and 174.9 MB in the end (delta: -70.7 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.47 ms. Allocated memory is still 205.0 MB. Free memory was 174.9 MB in the beginning and 170.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1239.10 ms. Allocated memory is still 205.0 MB. Free memory was 170.8 MB in the beginning and 107.7 MB in the end (delta: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9138.16 ms. Allocated memory was 205.0 MB in the beginning and 329.8 MB in the end (delta: 124.8 MB). Free memory was 107.1 MB in the beginning and 282.0 MB in the end (delta: -174.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 461]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L179] unsigned int Id_MCDC_104; [L180] UINT16 Id_MCDC_105; [L181] UINT16 Id_MCDC_106; [L182] Od_IndexTable* Id_MCDC_107; [L183] Od_IndexTable* Id_MCDC_108; [L184] Od_IndexTable* Id_MCDC_109; [L185] Od_IndexTable* Id_MCDC_110; [L186] Od_IndexTable* Id_MCDC_111; [L187] UINT32 Id_MCDC_112 [4]; [L188] CanOpenNode Id_MCDC_113; [L189] UINT32 Id_MCDC_114=0; [L427] void * Id_MCDC_143; [L428] void * Id_MCDC_144; [L429] void * Id_MCDC_145; [L430] void * Id_MCDC_146; [L431] void * Id_MCDC_147; [L432] void * Id_MCDC_148; [L433] int Id_MCDC_149; [L434] int Id_MCDC_150; [L435] int Id_MCDC_151; [L436] int Id_MCDC_152; [L437] int Id_MCDC_153; [L438] int Id_MCDC_154; [L439] int Id_MCDC_155; [L440] short Id_MCDC_156; [L441] short Id_MCDC_157; [L442] FILE* Id_MCDC_158; [L443] unsigned short Id_MCDC_159; [L444] unsigned short Id_MCDC_160; [L445] unsigned short Id_MCDC_161=0; [L446] unsigned short Id_MCDC_162=0; [L447] char Id_MCDC_163; [L448] char Id_MCDC_164; [L449] Id_MCDC_158 = fopen("in.eds", "r") [L450] COND FALSE !(Id_MCDC_158 == (( void * ) 0)) [L455] CALL Id_MCDC_100() [L420] int Id_MCDC_141; [L421] void * Id_MCDC_142; [L422] CALL Id_MCDC_99() [L400] CHAR Id_MCDC_139 [4]={0, 0, 0, 0}; [L401] UINT32 Id_MCDC_140=0; [L402] Id_MCDC_113.Id_MCDC_66 = ( PDO_Buffer* ) malloc(372) [L403] CALL Id_MCDC_97() [L331] UINT32 Id_MCDC_123; [L332] UINT32 Id_MCDC_124; [L333] UINT32 Id_MCDC_125; [L334] UINT32 Id_MCDC_126; [L335] UINT32 Id_MCDC_127; [L336] UINT32 Id_MCDC_128=0x00; [L337] UINT16 Id_MCDC_129; [L338] UINT32 Id_MCDC_130=0x00; [L339] UINT32 Id_MCDC_131=0x00; [L340] UINT8 Id_MCDC_35=0; [L341] UINT8 Id_MCDC_132=0; [L342] UINT8 Id_MCDC_36=0; [L343] UINT8 Id_MCDC_133=0; [L344] UINT8 Id_MCDC_134=0x00; [L345] INT32 Id_MCDC_135; [L346] void * Id_MCDC_136; [L347] UINT32* Id_MCDC_137; [L348] UINT16 Id_MCDC_138; [L349] Id_MCDC_123 = 0x1800 [L350] Id_MCDC_132 = 0 [L350] COND TRUE Id_MCDC_132 < 4 [L352] Id_MCDC_112[Id_MCDC_132] = 0x1A00 + Id_MCDC_132 [L350] Id_MCDC_132++ [L350] COND TRUE Id_MCDC_132 < 4 [L352] Id_MCDC_112[Id_MCDC_132] = 0x1A00 + Id_MCDC_132 [L350] Id_MCDC_132++ [L350] COND TRUE Id_MCDC_132 < 4 [L352] Id_MCDC_112[Id_MCDC_132] = 0x1A00 + Id_MCDC_132 [L350] Id_MCDC_132++ [L350] COND TRUE Id_MCDC_132 < 4 [L352] Id_MCDC_112[Id_MCDC_132] = 0x1A00 + Id_MCDC_132 [L350] Id_MCDC_132++ [L350] COND FALSE !(Id_MCDC_132 < 4) [L354] COND FALSE !(Id_MCDC_123 <= 0x1803) [L396] return 0x00; [L336] UINT32 Id_MCDC_128=0x00; [L396] return 0x00; [L338] UINT32 Id_MCDC_130=0x00; [L396] return 0x00; [L339] UINT32 Id_MCDC_131=0x00; [L396] return 0x00; [L396] return 0x00; [L396] return 0x00; [L403] RET Id_MCDC_97() [L404] Id_MCDC_140 = 0 [L404] COND FALSE !(Id_MCDC_140 < 4) [L415] CALL Id_MCDC_95(4, Id_MCDC_139) [L280] UINT32 Id_MCDC_121=0; [L281] UINT32 Id_MCDC_122=0; [L282] COND FALSE !(Id_MCDC_93 < 2) [L286] COND FALSE !(Id_MCDC_93 != 2) [L292] EXPR Id_MCDC_94[1] [L292] Id_MCDC_122 = Id_MCDC_94[1] [L294] EXPR Id_MCDC_94[0] [L294] CALL, EXPR Id_MCDC_92(Id_MCDC_94[0], Id_MCDC_122) [L249] UINT32 Id_MCDC_117=0; [L250] UINT32 Id_MCDC_118=0; [L251] UINT32 Id_MCDC_119=1; [L252] UINT32 Id_MCDC_120=0; [L253] COND FALSE !(Id_MCDC_90 > Id_MCDC_91) [L259] COND FALSE !(Id_MCDC_90 < Id_MCDC_91) [L266] return Id_MCDC_90; [L294] RET, EXPR Id_MCDC_92(Id_MCDC_94[0], Id_MCDC_122) [L294] Id_MCDC_121 = Id_MCDC_92(Id_MCDC_94[0], Id_MCDC_122) [L295] CALL avoid_zero(Id_MCDC_121 != 0) [L9] COND FALSE !(!y) [L295] RET avoid_zero(Id_MCDC_121 != 0) [L296] EXPR Id_MCDC_94[0] [L296] EXPR ( long long ) ((Id_MCDC_94[0] * Id_MCDC_122) / Id_MCDC_121) >= 0 && ( long long ) ((Id_MCDC_94[0] * Id_MCDC_122) / Id_MCDC_121) <= 4294967295 [L296] EXPR Id_MCDC_94[0] [L296] EXPR ( long long ) ((Id_MCDC_94[0] * Id_MCDC_122) / Id_MCDC_121) >= 0 && ( long long ) ((Id_MCDC_94[0] * Id_MCDC_122) / Id_MCDC_121) <= 4294967295 [L296] CALL __VERIFIER_assert(( long long ) ((Id_MCDC_94[0] * Id_MCDC_122) / Id_MCDC_121) >= 0 && ( long long ) ((Id_MCDC_94[0] * Id_MCDC_122) / Id_MCDC_121) <= 4294967295) [L459] COND TRUE ! (Id_MCDC_103) [L461] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 133 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 9.0s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 705 SDtfs, 1008 SDslu, 855 SDs, 0 SdLazy, 1973 SolverSat, 218 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 5.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 195 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 33980 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...