/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:22:28,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:22:28,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:22:28,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:22:28,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:22:28,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:22:28,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:22:28,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:22:28,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:22:28,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:22:28,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:22:28,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:22:28,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:22:28,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:22:28,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:22:28,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:22:28,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:22:28,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:22:28,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:22:28,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:22:28,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:22:28,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:22:28,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:22:28,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:22:28,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:22:28,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:22:28,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:22:28,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:22:28,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:22:28,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:22:28,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:22:28,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:22:28,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:22:28,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:22:28,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:22:28,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:22:28,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:22:28,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:22:28,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:22:28,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:22:28,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:22:28,608 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 [2020-08-22 02:22:28,630 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:22:28,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:22:28,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:22:28,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:22:28,631 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:22:28,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:22:28,632 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:22:28,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:22:28,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:22:28,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:22:28,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:22:28,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:22:28,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:22:28,633 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:22:28,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:22:28,634 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:22:28,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:22:28,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:22:28,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:22:28,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:22:28,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:22:28,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:22:28,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:22:28,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:22:28,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:22:28,636 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:22:28,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:22:28,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:22:28,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:22:28,636 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:22:28,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:22:28,967 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:22:28,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:22:28,975 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:22:28,976 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:22:28,977 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_1.c [2020-08-22 02:22:29,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6df3dc8bc/1f8d8f1ae3474cd3801b1c879087b9b8/FLAGe32cf3a5c [2020-08-22 02:22:29,600 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:22:29,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/ofuf_1.c [2020-08-22 02:22:29,612 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6df3dc8bc/1f8d8f1ae3474cd3801b1c879087b9b8/FLAGe32cf3a5c [2020-08-22 02:22:29,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6df3dc8bc/1f8d8f1ae3474cd3801b1c879087b9b8 [2020-08-22 02:22:29,849 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:22:29,851 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:22:29,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:22:29,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:22:29,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:22:29,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:22:29" (1/1) ... [2020-08-22 02:22:29,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634d1e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:22:29, skipping insertion in model container [2020-08-22 02:22:29,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:22:29" (1/1) ... [2020-08-22 02:22:29,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:22:29,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:22:30,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:22:30,313 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:22:30,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:22:30,445 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:22:30,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:22:30 WrapperNode [2020-08-22 02:22:30,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:22:30,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:22:30,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:22:30,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:22:30,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:22:30" (1/1) ... [2020-08-22 02:22:30,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:22:30" (1/1) ... [2020-08-22 02:22:30,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:22:30" (1/1) ... [2020-08-22 02:22:30,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:22:30" (1/1) ... [2020-08-22 02:22:30,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:22:30" (1/1) ... [2020-08-22 02:22:30,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:22:30" (1/1) ... [2020-08-22 02:22:30,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:22:30" (1/1) ... [2020-08-22 02:22:30,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:22:30,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:22:30,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:22:30,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:22:30,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:22:30" (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 [2020-08-22 02:22:30,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:22:30,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:22:30,640 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 02:22:30,640 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-08-22 02:22:30,641 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_107 [2020-08-22 02:22:30,641 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_110 [2020-08-22 02:22:30,641 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_113 [2020-08-22 02:22:30,642 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_114 [2020-08-22 02:22:30,642 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_115 [2020-08-22 02:22:30,643 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_117 [2020-08-22 02:22:30,643 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_118 [2020-08-22 02:22:30,643 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:22:30,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 02:22:30,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:22:30,644 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 02:22:30,645 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 02:22:30,645 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-08-22 02:22:30,645 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-08-22 02:22:30,645 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_107 [2020-08-22 02:22:30,645 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_110 [2020-08-22 02:22:30,645 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_113 [2020-08-22 02:22:30,645 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_114 [2020-08-22 02:22:30,646 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_115 [2020-08-22 02:22:30,646 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:22:30,646 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_117 [2020-08-22 02:22:30,647 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_118 [2020-08-22 02:22:30,647 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-08-22 02:22:30,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:22:30,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 02:22:30,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:22:30,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:22:30,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:22:30,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:22:30,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:22:30,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:22:30,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:22:30,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:22:30,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:22:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 02:22:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:22:31,523 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:22:31,523 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-08-22 02:22:31,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:22:31 BoogieIcfgContainer [2020-08-22 02:22:31,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:22:31,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:22:31,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:22:31,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:22:31,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:22:29" (1/3) ... [2020-08-22 02:22:31,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4972d699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:22:31, skipping insertion in model container [2020-08-22 02:22:31,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:22:30" (2/3) ... [2020-08-22 02:22:31,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4972d699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:22:31, skipping insertion in model container [2020-08-22 02:22:31,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:22:31" (3/3) ... [2020-08-22 02:22:31,539 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_1.c [2020-08-22 02:22:31,551 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:22:31,559 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:22:31,570 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:22:31,591 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:22:31,592 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:22:31,592 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:22:31,592 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:22:31,592 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:22:31,592 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:22:31,593 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:22:31,593 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:22:31,615 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2020-08-22 02:22:31,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 02:22:31,627 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:22:31,628 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] [2020-08-22 02:22:31,628 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:22:31,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:22:31,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1921771477, now seen corresponding path program 1 times [2020-08-22 02:22:31,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:22:31,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059472745] [2020-08-22 02:22:31,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:22:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:22:32,196 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-08-22 02:22:32,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:22:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:22:32,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 02:22:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:22:32,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 02:22:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:22:32,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:22:32,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059472745] [2020-08-22 02:22:32,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:22:32,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:22:32,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062380599] [2020-08-22 02:22:32,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:22:32,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:22:32,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:22:32,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:22:32,312 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 5 states. [2020-08-22 02:22:32,460 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-08-22 02:22:33,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:22:33,766 INFO L93 Difference]: Finished difference Result 262 states and 403 transitions. [2020-08-22 02:22:33,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 02:22:33,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-08-22 02:22:33,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:22:33,784 INFO L225 Difference]: With dead ends: 262 [2020-08-22 02:22:33,784 INFO L226 Difference]: Without dead ends: 139 [2020-08-22 02:22:33,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 02:22:33,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-22 02:22:33,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 119. [2020-08-22 02:22:33,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-22 02:22:33,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions. [2020-08-22 02:22:33,863 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 38 [2020-08-22 02:22:33,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:22:33,863 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 165 transitions. [2020-08-22 02:22:33,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:22:33,864 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions. [2020-08-22 02:22:33,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 02:22:33,867 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:22:33,867 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] [2020-08-22 02:22:33,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:22:33,868 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:22:33,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:22:33,868 INFO L82 PathProgramCache]: Analyzing trace with hash -503826635, now seen corresponding path program 1 times [2020-08-22 02:22:33,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:22:33,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307449714] [2020-08-22 02:22:33,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:22:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:22:34,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:22:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:22:34,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 02:22:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:22:34,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-22 02:22:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:22:34,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:22:34,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307449714] [2020-08-22 02:22:34,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:22:34,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 02:22:34,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491467159] [2020-08-22 02:22:34,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 02:22:34,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:22:34,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 02:22:34,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 02:22:34,162 INFO L87 Difference]: Start difference. First operand 119 states and 165 transitions. Second operand 6 states. [2020-08-22 02:22:34,283 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-08-22 02:22:35,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:22:35,193 INFO L93 Difference]: Finished difference Result 263 states and 379 transitions. [2020-08-22 02:22:35,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 02:22:35,194 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-08-22 02:22:35,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:22:35,197 INFO L225 Difference]: With dead ends: 263 [2020-08-22 02:22:35,197 INFO L226 Difference]: Without dead ends: 160 [2020-08-22 02:22:35,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:22:35,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-22 02:22:35,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 121. [2020-08-22 02:22:35,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-22 02:22:35,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 167 transitions. [2020-08-22 02:22:35,223 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 167 transitions. Word has length 40 [2020-08-22 02:22:35,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:22:35,223 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 167 transitions. [2020-08-22 02:22:35,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 02:22:35,224 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 167 transitions. [2020-08-22 02:22:35,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-22 02:22:35,226 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:22:35,226 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] [2020-08-22 02:22:35,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:22:35,226 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:22:35,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:22:35,227 INFO L82 PathProgramCache]: Analyzing trace with hash -16428909, now seen corresponding path program 2 times [2020-08-22 02:22:35,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:22:35,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733213404] [2020-08-22 02:22:35,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:22:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:22:35,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:22:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:22:35,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 02:22:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:22:35,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:22:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:22:35,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:22:35,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733213404] [2020-08-22 02:22:35,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:22:35,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 02:22:35,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413152432] [2020-08-22 02:22:35,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 02:22:35,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:22:35,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 02:22:35,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:22:35,534 INFO L87 Difference]: Start difference. First operand 121 states and 167 transitions. Second operand 7 states. [2020-08-22 02:22:36,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:22:36,836 INFO L93 Difference]: Finished difference Result 284 states and 412 transitions. [2020-08-22 02:22:36,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 02:22:36,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-08-22 02:22:36,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:22:36,839 INFO L225 Difference]: With dead ends: 284 [2020-08-22 02:22:36,839 INFO L226 Difference]: Without dead ends: 181 [2020-08-22 02:22:36,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:22:36,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-22 02:22:36,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 123. [2020-08-22 02:22:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-22 02:22:36,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions. [2020-08-22 02:22:36,879 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 42 [2020-08-22 02:22:36,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:22:36,879 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 169 transitions. [2020-08-22 02:22:36,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 02:22:36,879 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions. [2020-08-22 02:22:36,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-08-22 02:22:36,884 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:22:36,884 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] [2020-08-22 02:22:36,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:22:36,887 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:22:36,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:22:36,887 INFO L82 PathProgramCache]: Analyzing trace with hash 221350513, now seen corresponding path program 3 times [2020-08-22 02:22:36,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:22:36,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859645087] [2020-08-22 02:22:36,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:22:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:22:37,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:22:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:22:37,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 02:22:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:22:37,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 02:22:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:22:37,177 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:22:37,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859645087] [2020-08-22 02:22:37,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:22:37,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 02:22:37,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948536470] [2020-08-22 02:22:37,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:22:37,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:22:37,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:22:37,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:22:37,181 INFO L87 Difference]: Start difference. First operand 123 states and 169 transitions. Second operand 8 states. [2020-08-22 02:22:37,329 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-08-22 02:22:41,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:22:41,009 INFO L93 Difference]: Finished difference Result 306 states and 446 transitions. [2020-08-22 02:22:41,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 02:22:41,010 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-08-22 02:22:41,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:22:41,013 INFO L225 Difference]: With dead ends: 306 [2020-08-22 02:22:41,013 INFO L226 Difference]: Without dead ends: 203 [2020-08-22 02:22:41,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:22:41,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-08-22 02:22:41,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 125. [2020-08-22 02:22:41,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-22 02:22:41,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 171 transitions. [2020-08-22 02:22:41,045 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 171 transitions. Word has length 44 [2020-08-22 02:22:41,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:22:41,045 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 171 transitions. [2020-08-22 02:22:41,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:22:41,045 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 171 transitions. [2020-08-22 02:22:41,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 02:22:41,047 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:22:41,047 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] [2020-08-22 02:22:41,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:22:41,047 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:22:41,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:22:41,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1094108367, now seen corresponding path program 4 times [2020-08-22 02:22:41,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:22:41,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314989019] [2020-08-22 02:22:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:22:41,092 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 02:22:41,093 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 02:22:41,093 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:22:41,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:22:41,132 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 02:22:41,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:22:41 BoogieIcfgContainer [2020-08-22 02:22:41,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:22:41,136 INFO L168 Benchmark]: Toolchain (without parser) took 11285.26 ms. Allocated memory was 145.8 MB in the beginning and 326.1 MB in the end (delta: 180.4 MB). Free memory was 100.8 MB in the beginning and 268.3 MB in the end (delta: -167.5 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-22 02:22:41,137 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 145.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 02:22:41,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 594.91 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 100.6 MB in the beginning and 171.5 MB in the end (delta: -70.9 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-08-22 02:22:41,140 INFO L168 Benchmark]: Boogie Preprocessor took 108.48 ms. Allocated memory is still 201.9 MB. Free memory was 171.5 MB in the beginning and 167.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-08-22 02:22:41,147 INFO L168 Benchmark]: RCFGBuilder took 973.36 ms. Allocated memory is still 201.9 MB. Free memory was 167.0 MB in the beginning and 104.2 MB in the end (delta: 62.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB. [2020-08-22 02:22:41,148 INFO L168 Benchmark]: TraceAbstraction took 9603.28 ms. Allocated memory was 201.9 MB in the beginning and 326.1 MB in the end (delta: 124.3 MB). Free memory was 103.5 MB in the beginning and 268.3 MB in the end (delta: -164.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:22:41,159 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 145.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 594.91 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 100.6 MB in the beginning and 171.5 MB in the end (delta: -70.9 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.48 ms. Allocated memory is still 201.9 MB. Free memory was 171.5 MB in the beginning and 167.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 973.36 ms. Allocated memory is still 201.9 MB. Free memory was 167.0 MB in the beginning and 104.2 MB in the end (delta: 62.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9603.28 ms. Allocated memory was 201.9 MB in the beginning and 326.1 MB in the end (delta: 124.3 MB). Free memory was 103.5 MB in the beginning and 268.3 MB in the end (delta: -164.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 487]: 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: [L204] unsigned int Id_MCDC_122; [L205] UINT16 Id_MCDC_123; [L206] UINT16 Id_MCDC_124; [L207] Od_IndexTable* Id_MCDC_125; [L208] Od_IndexTable* Id_MCDC_126; [L209] Od_IndexTable* Id_MCDC_127; [L210] Od_IndexTable* Id_MCDC_128; [L211] Od_IndexTable* Id_MCDC_129; [L212] UINT32 Id_MCDC_130 [4]; [L213] CanOpenNode Id_MCDC_131; [L214] UINT32 Id_MCDC_132=0; [L452] void * Id_MCDC_161; [L453] void * Id_MCDC_162; [L454] void * Id_MCDC_163; [L455] void * Id_MCDC_164; [L456] void * Id_MCDC_165; [L457] void * Id_MCDC_166; [L458] int Id_MCDC_167; [L459] int Id_MCDC_168; [L460] int Id_MCDC_169; [L461] int Id_MCDC_170; [L462] int Id_MCDC_171; [L463] int Id_MCDC_172; [L464] int Id_MCDC_173; [L465] short Id_MCDC_174; [L466] short Id_MCDC_175; [L467] FILE* Id_MCDC_176; [L468] unsigned short Id_MCDC_177; [L469] unsigned short Id_MCDC_178; [L470] unsigned short Id_MCDC_179=0; [L471] unsigned short Id_MCDC_180=0; [L472] char Id_MCDC_181; [L473] char Id_MCDC_182; [L474] POS_CTRL_MODE Id_MCDC_183; [L475] Id_MCDC_176 = fopen("in.eds", "r") [L476] COND FALSE !(Id_MCDC_176 == (( void * ) 0)) [L481] CALL Id_MCDC_118() [L445] int Id_MCDC_159; [L446] void * Id_MCDC_160; [L447] CALL Id_MCDC_117() [L425] CHAR Id_MCDC_157 [4]={0, 0, 0, 0}; [L426] UINT32 Id_MCDC_158=0; [L427] Id_MCDC_131.Id_MCDC_66 = ( PDO_Buffer* ) malloc(372) [L428] CALL Id_MCDC_115() [L356] UINT32 Id_MCDC_141; [L357] UINT32 Id_MCDC_142; [L358] UINT32 Id_MCDC_143; [L359] UINT32 Id_MCDC_144; [L360] UINT32 Id_MCDC_145; [L361] UINT32 Id_MCDC_146=0x00; [L362] UINT16 Id_MCDC_147; [L363] UINT32 Id_MCDC_148=0x00; [L364] UINT32 Id_MCDC_149=0x00; [L365] UINT8 Id_MCDC_35=0; [L366] UINT8 Id_MCDC_150=0; [L367] UINT8 Id_MCDC_36=0; [L368] UINT8 Id_MCDC_151=0; [L369] UINT8 Id_MCDC_152=0x00; [L370] INT32 Id_MCDC_153; [L371] void * Id_MCDC_154; [L372] UINT32* Id_MCDC_155; [L373] UINT16 Id_MCDC_156; [L374] Id_MCDC_141 = 0x1800 [L375] Id_MCDC_150 = 0 [L375] COND TRUE Id_MCDC_150 < 4 [L377] Id_MCDC_130[Id_MCDC_150] = 0x1A00 + Id_MCDC_150 [L375] Id_MCDC_150++ [L375] COND TRUE Id_MCDC_150 < 4 [L377] Id_MCDC_130[Id_MCDC_150] = 0x1A00 + Id_MCDC_150 [L375] Id_MCDC_150++ [L375] COND TRUE Id_MCDC_150 < 4 [L377] Id_MCDC_130[Id_MCDC_150] = 0x1A00 + Id_MCDC_150 [L375] Id_MCDC_150++ [L375] COND TRUE Id_MCDC_150 < 4 [L377] Id_MCDC_130[Id_MCDC_150] = 0x1A00 + Id_MCDC_150 [L375] Id_MCDC_150++ [L375] COND FALSE !(Id_MCDC_150 < 4) [L379] COND FALSE !(Id_MCDC_141 <= 0x1803) [L421] return 0x00; [L361] UINT32 Id_MCDC_146=0x00; [L421] return 0x00; [L363] UINT32 Id_MCDC_148=0x00; [L421] return 0x00; [L364] UINT32 Id_MCDC_149=0x00; [L421] return 0x00; [L421] return 0x00; [L421] return 0x00; [L428] RET Id_MCDC_115() [L429] Id_MCDC_158 = 0 [L429] COND FALSE !(Id_MCDC_158 < 4) [L440] CALL Id_MCDC_113(4, Id_MCDC_157) [L305] UINT32 Id_MCDC_139=0; [L306] UINT32 Id_MCDC_140=0; [L307] COND FALSE !(Id_MCDC_111 < 2) [L311] COND FALSE !(Id_MCDC_111 != 2) [L317] EXPR Id_MCDC_112[1] [L317] Id_MCDC_140 = Id_MCDC_112[1] [L319] EXPR Id_MCDC_112[0] [L319] CALL Id_MCDC_110(Id_MCDC_112[0], Id_MCDC_140) [L274] UINT32 Id_MCDC_135=0; [L275] UINT32 Id_MCDC_136=0; [L276] UINT32 Id_MCDC_137=1; [L277] UINT32 Id_MCDC_138=0; [L278] COND TRUE Id_MCDC_108 > Id_MCDC_109 [L280] Id_MCDC_135 = Id_MCDC_108 [L281] Id_MCDC_136 = Id_MCDC_109 [L293] COND TRUE Id_MCDC_137 != 0 [L295] CALL avoid_zero(Id_MCDC_136 != 0) [L9] COND FALSE !(!y) [L295] RET avoid_zero(Id_MCDC_136 != 0) [L296] CALL __VERIFIER_assert(( long long ) (Id_MCDC_135 / Id_MCDC_136) >= 0 && ( long long ) (Id_MCDC_135 / Id_MCDC_136) <= 4294967295) [L485] COND TRUE ! (Id_MCDC_121) [L487] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 131 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 9.5s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 701 SDtfs, 984 SDslu, 855 SDs, 0 SdLazy, 1932 SolverSat, 218 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred 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, 1.1s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 29420 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...