/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:54:47,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:54:47,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:54:47,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:54:47,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:54:47,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:54:47,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:54:47,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:54:47,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:54:47,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:54:47,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:54:47,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:54:47,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:54:47,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:54:47,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:54:47,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:54:47,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:54:47,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:54:47,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:54:47,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:54:47,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:54:47,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:54:47,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:54:47,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:54:47,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:54:47,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:54:47,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:54:47,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:54:47,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:54:47,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:54:47,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:54:47,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:54:47,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:54:47,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:54:47,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:54:47,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:54:47,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:54:47,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:54:47,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:54:47,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:54:47,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:54:47,614 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 [2020-08-19 02:54:47,650 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:54:47,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:54:47,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:54:47,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:54:47,652 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:54:47,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:54:47,652 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:54:47,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:54:47,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:54:47,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:54:47,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:54:47,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:54:47,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:54:47,654 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:54:47,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:54:47,654 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:54:47,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:54:47,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:54:47,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:54:47,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:54:47,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:54:47,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:54:47,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:54:47,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:54:47,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:54:47,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:54:47,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:54:47,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:54:47,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:54:47,657 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=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:54:48,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:54:48,018 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:54:48,021 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:54:48,023 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:54:48,023 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:54:48,024 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2020-08-19 02:54:48,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6abec45a5/62cd420e9b9647dd926f0dafce3b5e33/FLAG6cfb42c2c [2020-08-19 02:54:48,555 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:54:48,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2020-08-19 02:54:48,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6abec45a5/62cd420e9b9647dd926f0dafce3b5e33/FLAG6cfb42c2c [2020-08-19 02:54:48,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6abec45a5/62cd420e9b9647dd926f0dafce3b5e33 [2020-08-19 02:54:48,912 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:54:48,913 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:54:48,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:54:48,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:54:48,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:54:48,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:54:48" (1/1) ... [2020-08-19 02:54:48,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ee1c646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:48, skipping insertion in model container [2020-08-19 02:54:48,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:54:48" (1/1) ... [2020-08-19 02:54:48,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:54:48,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:54:49,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:54:49,479 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:54:49,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:54:49,588 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:54:49,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:49 WrapperNode [2020-08-19 02:54:49,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:54:49,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:54:49,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:54:49,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:54:49,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:49" (1/1) ... [2020-08-19 02:54:49,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:49" (1/1) ... [2020-08-19 02:54:49,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:49" (1/1) ... [2020-08-19 02:54:49,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:49" (1/1) ... [2020-08-19 02:54:49,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:49" (1/1) ... [2020-08-19 02:54:49,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:49" (1/1) ... [2020-08-19 02:54:49,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:49" (1/1) ... [2020-08-19 02:54:49,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:54:49,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:54:49,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:54:49,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:54:49,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:49" (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 [2020-08-19 02:54:49,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:54:49,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:54:49,769 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 02:54:49,769 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-08-19 02:54:49,769 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2020-08-19 02:54:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2020-08-19 02:54:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2020-08-19 02:54:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2020-08-19 02:54:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2020-08-19 02:54:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2020-08-19 02:54:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2020-08-19 02:54:49,772 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:54:49,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 02:54:49,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:54:49,772 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 02:54:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 02:54:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-08-19 02:54:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-08-19 02:54:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-08-19 02:54:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2020-08-19 02:54:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2020-08-19 02:54:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2020-08-19 02:54:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2020-08-19 02:54:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:54:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2020-08-19 02:54:49,776 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2020-08-19 02:54:49,776 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-08-19 02:54:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:54:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 02:54:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:54:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:54:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:54:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:54:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:54:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:54:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:54:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:54:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:54:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 02:54:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:54:50,879 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:54:50,879 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-08-19 02:54:50,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:54:50 BoogieIcfgContainer [2020-08-19 02:54:50,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:54:50,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:54:50,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:54:50,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:54:50,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:54:48" (1/3) ... [2020-08-19 02:54:50,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd9cea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:54:50, skipping insertion in model container [2020-08-19 02:54:50,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:54:49" (2/3) ... [2020-08-19 02:54:50,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd9cea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:54:50, skipping insertion in model container [2020-08-19 02:54:50,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:54:50" (3/3) ... [2020-08-19 02:54:50,894 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_2.c [2020-08-19 02:54:50,904 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:54:50,912 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:54:50,926 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:54:50,952 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:54:50,952 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:54:50,952 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:54:50,952 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:54:50,952 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:54:50,953 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:54:50,953 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:54:50,953 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:54:50,973 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-08-19 02:54:50,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-08-19 02:54:50,983 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:50,984 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] [2020-08-19 02:54:50,984 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:54:50,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:50,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1652927245, now seen corresponding path program 1 times [2020-08-19 02:54:51,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:51,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591661469] [2020-08-19 02:54:51,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:51,506 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-08-19 02:54:51,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:51,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:54:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:51,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 02:54:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:51,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:54:51,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591661469] [2020-08-19 02:54:51,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:51,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:54:51,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977015051] [2020-08-19 02:54:51,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:54:51,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:51,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:54:51,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:54:51,623 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 5 states. [2020-08-19 02:54:51,773 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-08-19 02:54:54,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:54,782 INFO L93 Difference]: Finished difference Result 265 states and 406 transitions. [2020-08-19 02:54:54,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 02:54:54,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-08-19 02:54:54,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:54,798 INFO L225 Difference]: With dead ends: 265 [2020-08-19 02:54:54,798 INFO L226 Difference]: Without dead ends: 141 [2020-08-19 02:54:54,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:54:54,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-19 02:54:54,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 120. [2020-08-19 02:54:54,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 02:54:54,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 166 transitions. [2020-08-19 02:54:54,884 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 166 transitions. Word has length 39 [2020-08-19 02:54:54,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:54,885 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 166 transitions. [2020-08-19 02:54:54,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:54:54,885 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 166 transitions. [2020-08-19 02:54:54,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-19 02:54:54,893 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:54,893 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] [2020-08-19 02:54:54,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:54:54,895 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:54:54,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:54,896 INFO L82 PathProgramCache]: Analyzing trace with hash -296822387, now seen corresponding path program 1 times [2020-08-19 02:54:54,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:54,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018505720] [2020-08-19 02:54:54,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:55,153 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-08-19 02:54:55,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:55,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:54:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:55,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-19 02:54:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:54:55,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018505720] [2020-08-19 02:54:55,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:54:55,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 02:54:55,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681231409] [2020-08-19 02:54:55,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:54:55,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:55,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:54:55,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:54:55,338 INFO L87 Difference]: Start difference. First operand 120 states and 166 transitions. Second operand 6 states. [2020-08-19 02:54:55,479 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-08-19 02:54:56,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:56,474 INFO L93 Difference]: Finished difference Result 265 states and 381 transitions. [2020-08-19 02:54:56,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:54:56,475 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-08-19 02:54:56,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:56,478 INFO L225 Difference]: With dead ends: 265 [2020-08-19 02:54:56,479 INFO L226 Difference]: Without dead ends: 161 [2020-08-19 02:54:56,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:54:56,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-08-19 02:54:56,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 122. [2020-08-19 02:54:56,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-19 02:54:56,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 168 transitions. [2020-08-19 02:54:56,505 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 168 transitions. Word has length 41 [2020-08-19 02:54:56,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:56,505 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 168 transitions. [2020-08-19 02:54:56,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:54:56,506 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 168 transitions. [2020-08-19 02:54:56,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-08-19 02:54:56,508 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:56,508 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] [2020-08-19 02:54:56,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:54:56,508 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:54:56,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:56,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1007450673, now seen corresponding path program 2 times [2020-08-19 02:54:56,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:56,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844120011] [2020-08-19 02:54:56,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:56,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:56,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:54:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:56,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:54:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:54:56,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844120011] [2020-08-19 02:54:56,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:54:56,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 02:54:56,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247760668] [2020-08-19 02:54:56,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:54:56,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:56,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:54:56,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:54:56,806 INFO L87 Difference]: Start difference. First operand 122 states and 168 transitions. Second operand 7 states. [2020-08-19 02:54:56,934 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-08-19 02:55:00,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:55:00,246 INFO L93 Difference]: Finished difference Result 286 states and 414 transitions. [2020-08-19 02:55:00,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 02:55:00,246 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-08-19 02:55:00,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:55:00,249 INFO L225 Difference]: With dead ends: 286 [2020-08-19 02:55:00,250 INFO L226 Difference]: Without dead ends: 182 [2020-08-19 02:55:00,251 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 [2020-08-19 02:55:00,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-19 02:55:00,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 124. [2020-08-19 02:55:00,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-19 02:55:00,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 170 transitions. [2020-08-19 02:55:00,274 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 170 transitions. Word has length 43 [2020-08-19 02:55:00,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:55:00,274 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 170 transitions. [2020-08-19 02:55:00,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:55:00,275 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 170 transitions. [2020-08-19 02:55:00,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-19 02:55:00,276 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:55:00,277 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] [2020-08-19 02:55:00,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:55:00,277 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:55:00,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:55:00,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1021433455, now seen corresponding path program 3 times [2020-08-19 02:55:00,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:55:00,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6495616] [2020-08-19 02:55:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:55:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:00,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:55:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:00,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 02:55:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:00,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 02:55:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:55:00,535 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:55:00,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6495616] [2020-08-19 02:55:00,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:55:00,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 02:55:00,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803625745] [2020-08-19 02:55:00,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:55:00,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:55:00,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:55:00,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:55:00,538 INFO L87 Difference]: Start difference. First operand 124 states and 170 transitions. Second operand 8 states. [2020-08-19 02:55:00,666 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-08-19 02:55:02,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:55:02,587 INFO L93 Difference]: Finished difference Result 307 states and 447 transitions. [2020-08-19 02:55:02,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:55:02,589 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-08-19 02:55:02,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:55:02,592 INFO L225 Difference]: With dead ends: 307 [2020-08-19 02:55:02,593 INFO L226 Difference]: Without dead ends: 203 [2020-08-19 02:55:02,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:55:02,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-08-19 02:55:02,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 126. [2020-08-19 02:55:02,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-19 02:55:02,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 172 transitions. [2020-08-19 02:55:02,624 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 172 transitions. Word has length 45 [2020-08-19 02:55:02,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:55:02,624 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 172 transitions. [2020-08-19 02:55:02,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:55:02,624 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 172 transitions. [2020-08-19 02:55:02,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 02:55:02,626 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:55:02,626 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] [2020-08-19 02:55:02,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:55:02,626 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:55:02,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:55:02,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1573985069, now seen corresponding path program 4 times [2020-08-19 02:55:02,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:55:02,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906790087] [2020-08-19 02:55:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:55:02,656 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-19 02:55:02,656 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-19 02:55:02,657 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:55:02,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:55:02,684 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-19 02:55:02,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:55:02 BoogieIcfgContainer [2020-08-19 02:55:02,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:55:02,686 INFO L168 Benchmark]: Toolchain (without parser) took 13773.08 ms. Allocated memory was 138.9 MB in the beginning and 322.4 MB in the end (delta: 183.5 MB). Free memory was 100.8 MB in the beginning and 253.3 MB in the end (delta: -152.5 MB). Peak memory consumption was 31.0 MB. Max. memory is 7.1 GB. [2020-08-19 02:55:02,687 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 02:55:02,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.67 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 100.6 MB in the beginning and 170.3 MB in the end (delta: -69.7 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-08-19 02:55:02,689 INFO L168 Benchmark]: Boogie Preprocessor took 91.58 ms. Allocated memory is still 200.8 MB. Free memory was 170.3 MB in the beginning and 166.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-19 02:55:02,690 INFO L168 Benchmark]: RCFGBuilder took 1203.12 ms. Allocated memory is still 200.8 MB. Free memory was 166.2 MB in the beginning and 103.9 MB in the end (delta: 62.3 MB). Peak memory consumption was 62.3 MB. Max. memory is 7.1 GB. [2020-08-19 02:55:02,691 INFO L168 Benchmark]: TraceAbstraction took 11798.49 ms. Allocated memory was 200.8 MB in the beginning and 322.4 MB in the end (delta: 121.6 MB). Free memory was 103.2 MB in the beginning and 253.3 MB in the end (delta: -150.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 02:55:02,694 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 674.67 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 100.6 MB in the beginning and 170.3 MB in the end (delta: -69.7 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.58 ms. Allocated memory is still 200.8 MB. Free memory was 170.3 MB in the beginning and 166.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1203.12 ms. Allocated memory is still 200.8 MB. Free memory was 166.2 MB in the beginning and 103.9 MB in the end (delta: 62.3 MB). Peak memory consumption was 62.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11798.49 ms. Allocated memory was 200.8 MB in the beginning and 322.4 MB in the end (delta: 121.6 MB). Free memory was 103.2 MB in the beginning and 253.3 MB in the end (delta: -150.1 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 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 TRUE Id_MCDC_90 > Id_MCDC_91 [L255] Id_MCDC_117 = Id_MCDC_90 [L256] Id_MCDC_118 = Id_MCDC_91 [L268] COND TRUE Id_MCDC_119 != 0 [L270] CALL avoid_zero(Id_MCDC_118 != 0) [L9] COND FALSE !(!y) [L270] RET avoid_zero(Id_MCDC_118 != 0) [L271] Id_MCDC_120 = ( UINT32 ) (Id_MCDC_117 / Id_MCDC_118) [L272] CALL __VERIFIER_assert(( long long ) (Id_MCDC_117 - (Id_MCDC_120 * Id_MCDC_118)) >= 0 && ( long long ) (Id_MCDC_117 - (Id_MCDC_120 * Id_MCDC_118)) <= 4294967295) [L459] COND TRUE ! (Id_MCDC_103) [L461] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 132 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 11.7s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 705 SDtfs, 992 SDslu, 855 SDs, 0 SdLazy, 1943 SolverSat, 218 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 8.2s 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=128occurred 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, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 30316 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...