/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 22:47:37,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 22:47:37,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 22:47:37,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 22:47:37,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 22:47:37,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 22:47:37,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 22:47:37,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 22:47:37,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 22:47:37,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 22:47:37,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 22:47:37,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 22:47:37,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 22:47:37,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 22:47:37,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 22:47:37,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 22:47:37,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 22:47:37,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 22:47:37,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 22:47:37,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 22:47:37,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 22:47:37,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 22:47:37,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 22:47:37,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 22:47:37,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 22:47:37,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 22:47:37,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 22:47:37,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 22:47:37,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 22:47:37,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 22:47:37,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 22:47:37,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 22:47:37,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 22:47:37,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 22:47:37,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 22:47:37,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 22:47:37,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 22:47:37,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 22:47:37,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 22:47:37,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 22:47:37,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 22:47:37,811 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 22:47:37,835 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 22:47:37,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 22:47:37,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 22:47:37,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 22:47:37,839 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 22:47:37,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 22:47:37,840 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 22:47:37,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 22:47:37,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 22:47:37,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 22:47:37,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 22:47:37,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 22:47:37,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 22:47:37,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 22:47:37,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 22:47:37,843 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 22:47:37,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 22:47:37,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 22:47:37,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 22:47:37,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 22:47:37,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 22:47:37,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:47:37,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 22:47:37,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 22:47:37,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 22:47:37,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 22:47:37,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:37,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 22:47:37,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 22:47:37,846 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 22:47:38,192 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 22:47:38,213 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 22:47:38,217 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 22:47:38,222 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 22:47:38,222 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 22:47:38,223 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c [2020-07-20 22:47:38,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69144d45e/1187c72f5140427492c4e97bf61021d0/FLAG857e456a0 [2020-07-20 22:47:38,923 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 22:47:38,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c [2020-07-20 22:47:38,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69144d45e/1187c72f5140427492c4e97bf61021d0/FLAG857e456a0 [2020-07-20 22:47:39,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69144d45e/1187c72f5140427492c4e97bf61021d0 [2020-07-20 22:47:39,198 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 22:47:39,201 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 22:47:39,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 22:47:39,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 22:47:39,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 22:47:39,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:47:39" (1/1) ... [2020-07-20 22:47:39,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71554420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:39, skipping insertion in model container [2020-07-20 22:47:39,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:47:39" (1/1) ... [2020-07-20 22:47:39,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 22:47:39,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 22:47:39,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:47:39,683 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 22:47:39,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:47:39,802 INFO L208 MainTranslator]: Completed translation [2020-07-20 22:47:39,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:39 WrapperNode [2020-07-20 22:47:39,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 22:47:39,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 22:47:39,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 22:47:39,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 22:47:39,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:39" (1/1) ... [2020-07-20 22:47:39,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:39" (1/1) ... [2020-07-20 22:47:39,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:39" (1/1) ... [2020-07-20 22:47:39,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:39" (1/1) ... [2020-07-20 22:47:39,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:39" (1/1) ... [2020-07-20 22:47:39,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:39" (1/1) ... [2020-07-20 22:47:39,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:39" (1/1) ... [2020-07-20 22:47:39,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 22:47:39,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 22:47:39,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 22:47:39,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 22:47:39,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 22:47:39,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 22:47:39,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 22:47:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 22:47:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-07-20 22:47:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2020-07-20 22:47:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2020-07-20 22:47:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2020-07-20 22:47:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2020-07-20 22:47:39,973 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2020-07-20 22:47:39,974 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2020-07-20 22:47:39,974 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2020-07-20 22:47:39,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 22:47:39,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 22:47:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 22:47:39,975 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 22:47:39,975 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 22:47:39,975 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-07-20 22:47:39,975 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-20 22:47:39,975 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-07-20 22:47:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2020-07-20 22:47:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2020-07-20 22:47:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2020-07-20 22:47:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2020-07-20 22:47:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 22:47:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2020-07-20 22:47:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2020-07-20 22:47:39,977 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-20 22:47:39,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 22:47:39,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 22:47:39,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 22:47:39,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 22:47:39,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 22:47:39,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 22:47:39,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 22:47:39,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 22:47:39,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 22:47:39,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 22:47:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 22:47:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 22:47:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 22:47:40,928 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 22:47:40,929 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-20 22:47:40,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:47:40 BoogieIcfgContainer [2020-07-20 22:47:40,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 22:47:40,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 22:47:40,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 22:47:40,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 22:47:40,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:47:39" (1/3) ... [2020-07-20 22:47:40,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406744af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:47:40, skipping insertion in model container [2020-07-20 22:47:40,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:39" (2/3) ... [2020-07-20 22:47:40,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406744af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:47:40, skipping insertion in model container [2020-07-20 22:47:40,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:47:40" (3/3) ... [2020-07-20 22:47:40,945 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_3.c [2020-07-20 22:47:40,957 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 22:47:40,966 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 22:47:40,982 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 22:47:41,011 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 22:47:41,011 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 22:47:41,011 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 22:47:41,012 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 22:47:41,012 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 22:47:41,012 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 22:47:41,013 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 22:47:41,013 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 22:47:41,037 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-07-20 22:47:41,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-20 22:47:41,048 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:47:41,050 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] [2020-07-20 22:47:41,050 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:47:41,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:47:41,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1652927245, now seen corresponding path program 1 times [2020-07-20 22:47:41,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:47:41,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112088957] [2020-07-20 22:47:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:41,413 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 22:47:41,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:47:41,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 22:47:41,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:47:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:47:41,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:47:41,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112088957] [2020-07-20 22:47:41,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:47:41,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:47:41,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259885797] [2020-07-20 22:47:41,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:47:41,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:47:41,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:47:41,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:47:41,511 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2020-07-20 22:47:41,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:47:41,597 INFO L93 Difference]: Finished difference Result 262 states and 403 transitions. [2020-07-20 22:47:41,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:47:41,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-07-20 22:47:41,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:47:41,615 INFO L225 Difference]: With dead ends: 262 [2020-07-20 22:47:41,616 INFO L226 Difference]: Without dead ends: 140 [2020-07-20 22:47:41,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:47:41,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-07-20 22:47:41,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 120. [2020-07-20 22:47:41,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-20 22:47:41,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 166 transitions. [2020-07-20 22:47:41,685 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 166 transitions. Word has length 39 [2020-07-20 22:47:41,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:47:41,685 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 166 transitions. [2020-07-20 22:47:41,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:47:41,686 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 166 transitions. [2020-07-20 22:47:41,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-20 22:47:41,690 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:47:41,690 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] [2020-07-20 22:47:41,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:41,899 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:47:41,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:47:41,900 INFO L82 PathProgramCache]: Analyzing trace with hash -296822387, now seen corresponding path program 1 times [2020-07-20 22:47:41,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:47:41,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895641185] [2020-07-20 22:47:41,901 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:42,101 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 22:47:42,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:47:42,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 22:47:42,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:47:42,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 22:47:42,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:47:42,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895641185] [2020-07-20 22:47:42,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:47:42,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:47:42,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136684900] [2020-07-20 22:47:42,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:47:42,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:47:42,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:47:42,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:47:42,138 INFO L87 Difference]: Start difference. First operand 120 states and 166 transitions. Second operand 3 states. [2020-07-20 22:47:42,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:47:42,169 INFO L93 Difference]: Finished difference Result 170 states and 230 transitions. [2020-07-20 22:47:42,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:47:42,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-07-20 22:47:42,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:47:42,174 INFO L225 Difference]: With dead ends: 170 [2020-07-20 22:47:42,174 INFO L226 Difference]: Without dead ends: 128 [2020-07-20 22:47:42,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:47:42,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-07-20 22:47:42,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 120. [2020-07-20 22:47:42,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-20 22:47:42,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 165 transitions. [2020-07-20 22:47:42,201 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 165 transitions. Word has length 41 [2020-07-20 22:47:42,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:47:42,201 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 165 transitions. [2020-07-20 22:47:42,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:47:42,206 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 165 transitions. [2020-07-20 22:47:42,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-20 22:47:42,208 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:47:42,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:47:42,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:42,426 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:47:42,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:47:42,427 INFO L82 PathProgramCache]: Analyzing trace with hash -469545370, now seen corresponding path program 1 times [2020-07-20 22:47:42,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:47:42,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627874065] [2020-07-20 22:47:42,429 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:42,668 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 22:47:42,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:47:42,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 22:47:42,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:47:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 22:47:42,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:47:42,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627874065] [2020-07-20 22:47:42,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:47:42,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:47:42,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527820867] [2020-07-20 22:47:42,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:47:42,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:47:42,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:47:42,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:47:42,721 INFO L87 Difference]: Start difference. First operand 120 states and 165 transitions. Second operand 3 states. [2020-07-20 22:47:42,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:47:42,765 INFO L93 Difference]: Finished difference Result 180 states and 246 transitions. [2020-07-20 22:47:42,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:47:42,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-07-20 22:47:42,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:47:42,769 INFO L225 Difference]: With dead ends: 180 [2020-07-20 22:47:42,769 INFO L226 Difference]: Without dead ends: 138 [2020-07-20 22:47:42,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:47:42,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-07-20 22:47:42,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 121. [2020-07-20 22:47:42,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-20 22:47:42,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 166 transitions. [2020-07-20 22:47:42,784 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 166 transitions. Word has length 42 [2020-07-20 22:47:42,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:47:42,785 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 166 transitions. [2020-07-20 22:47:42,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:47:42,785 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 166 transitions. [2020-07-20 22:47:42,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 22:47:42,788 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:47:42,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:47:43,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:43,003 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:47:43,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:47:43,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1206740640, now seen corresponding path program 1 times [2020-07-20 22:47:43,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:47:43,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278675418] [2020-07-20 22:47:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:43,197 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 22:47:43,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:47:43,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:47:43,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:47:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 22:47:43,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:47:43,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278675418] [2020-07-20 22:47:43,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:47:43,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 22:47:43,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699159750] [2020-07-20 22:47:43,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 22:47:43,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:47:43,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 22:47:43,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 22:47:43,228 INFO L87 Difference]: Start difference. First operand 121 states and 166 transitions. Second operand 4 states. [2020-07-20 22:47:43,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:47:43,279 INFO L93 Difference]: Finished difference Result 161 states and 213 transitions. [2020-07-20 22:47:43,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 22:47:43,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-07-20 22:47:43,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:47:43,282 INFO L225 Difference]: With dead ends: 161 [2020-07-20 22:47:43,282 INFO L226 Difference]: Without dead ends: 128 [2020-07-20 22:47:43,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:47:43,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-07-20 22:47:43,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-07-20 22:47:43,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-20 22:47:43,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 174 transitions. [2020-07-20 22:47:43,296 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 174 transitions. Word has length 47 [2020-07-20 22:47:43,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:47:43,296 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 174 transitions. [2020-07-20 22:47:43,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 22:47:43,296 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 174 transitions. [2020-07-20 22:47:43,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-20 22:47:43,299 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:47:43,299 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:47:43,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:43,513 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:47:43,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:47:43,514 INFO L82 PathProgramCache]: Analyzing trace with hash -367196113, now seen corresponding path program 1 times [2020-07-20 22:47:43,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:47:43,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23355538] [2020-07-20 22:47:43,515 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:43,737 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 22:47:43,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:47:43,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 22:47:43,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:47:43,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 22:47:43,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:47:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 22:47:43,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23355538] [2020-07-20 22:47:43,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:47:43,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-07-20 22:47:43,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293942943] [2020-07-20 22:47:43,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 22:47:43,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:47:43,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 22:47:43,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-20 22:47:43,921 INFO L87 Difference]: Start difference. First operand 128 states and 174 transitions. Second operand 9 states. [2020-07-20 22:47:44,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:47:44,162 INFO L93 Difference]: Finished difference Result 176 states and 231 transitions. [2020-07-20 22:47:44,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 22:47:44,163 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-07-20 22:47:44,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:47:44,165 INFO L225 Difference]: With dead ends: 176 [2020-07-20 22:47:44,165 INFO L226 Difference]: Without dead ends: 142 [2020-07-20 22:47:44,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 96 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-07-20 22:47:44,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-07-20 22:47:44,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-07-20 22:47:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-07-20 22:47:44,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 190 transitions. [2020-07-20 22:47:44,180 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 190 transitions. Word has length 53 [2020-07-20 22:47:44,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:47:44,181 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 190 transitions. [2020-07-20 22:47:44,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 22:47:44,181 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 190 transitions. [2020-07-20 22:47:44,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 22:47:44,183 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:47:44,183 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:47:44,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:44,399 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:47:44,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:47:44,401 INFO L82 PathProgramCache]: Analyzing trace with hash -119201668, now seen corresponding path program 1 times [2020-07-20 22:47:44,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:47:44,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338460490] [2020-07-20 22:47:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:44,637 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:47:44,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:47:44,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 22:47:44,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:47:44,689 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-20 22:47:44,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:47:44,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338460490] [2020-07-20 22:47:44,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:47:44,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 22:47:44,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415902709] [2020-07-20 22:47:44,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 22:47:44,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:47:44,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 22:47:44,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 22:47:44,693 INFO L87 Difference]: Start difference. First operand 142 states and 190 transitions. Second operand 4 states. [2020-07-20 22:47:44,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:47:44,712 INFO L93 Difference]: Finished difference Result 142 states and 190 transitions. [2020-07-20 22:47:44,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 22:47:44,713 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-07-20 22:47:44,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:47:44,714 INFO L225 Difference]: With dead ends: 142 [2020-07-20 22:47:44,714 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 22:47:44,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:47:44,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 22:47:44,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 22:47:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 22:47:44,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 22:47:44,716 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-07-20 22:47:44,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:47:44,717 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 22:47:44,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 22:47:44,717 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 22:47:44,717 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 22:47:44,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:44,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 22:47:45,213 INFO L268 CegarLoopResult]: For program point Id_MCDC_100FINAL(lines 418 424) no Hoare annotation was computed. [2020-07-20 22:47:45,213 INFO L268 CegarLoopResult]: For program point Id_MCDC_100EXIT(lines 418 424) no Hoare annotation was computed. [2020-07-20 22:47:45,214 INFO L271 CegarLoopResult]: At program point Id_MCDC_100ENTRY(lines 418 424) the Hoare annotation is: true [2020-07-20 22:47:45,214 INFO L271 CegarLoopResult]: At program point L422(line 422) the Hoare annotation is: true [2020-07-20 22:47:45,214 INFO L268 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-07-20 22:47:45,214 INFO L271 CegarLoopResult]: At program point L403(line 403) the Hoare annotation is: true [2020-07-20 22:47:45,214 INFO L268 CegarLoopResult]: For program point L403-1(line 403) no Hoare annotation was computed. [2020-07-20 22:47:45,214 INFO L271 CegarLoopResult]: At program point Id_MCDC_99ENTRY(lines 398 417) the Hoare annotation is: true [2020-07-20 22:47:45,215 INFO L268 CegarLoopResult]: For program point Id_MCDC_99EXIT(lines 398 417) no Hoare annotation was computed. [2020-07-20 22:47:45,215 INFO L268 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-07-20 22:47:45,215 INFO L268 CegarLoopResult]: For program point L406-2(lines 406 413) no Hoare annotation was computed. [2020-07-20 22:47:45,215 INFO L268 CegarLoopResult]: For program point L404-2(lines 404 414) no Hoare annotation was computed. [2020-07-20 22:47:45,215 INFO L271 CegarLoopResult]: At program point L404-3(lines 404 414) the Hoare annotation is: true [2020-07-20 22:47:45,215 INFO L271 CegarLoopResult]: At program point L404-4(lines 404 414) the Hoare annotation is: true [2020-07-20 22:47:45,215 INFO L268 CegarLoopResult]: For program point Id_MCDC_99FINAL(lines 398 417) no Hoare annotation was computed. [2020-07-20 22:47:45,216 INFO L268 CegarLoopResult]: For program point L221(line 221) no Hoare annotation was computed. [2020-07-20 22:47:45,216 INFO L268 CegarLoopResult]: For program point L213(line 213) no Hoare annotation was computed. [2020-07-20 22:47:45,216 INFO L268 CegarLoopResult]: For program point L209(line 209) no Hoare annotation was computed. [2020-07-20 22:47:45,216 INFO L268 CegarLoopResult]: For program point L209-2(line 209) no Hoare annotation was computed. [2020-07-20 22:47:45,216 INFO L271 CegarLoopResult]: At program point Id_MCDC_89ENTRY(lines 191 246) the Hoare annotation is: true [2020-07-20 22:47:45,216 INFO L268 CegarLoopResult]: For program point Id_MCDC_89EXIT(lines 191 246) no Hoare annotation was computed. [2020-07-20 22:47:45,216 INFO L268 CegarLoopResult]: For program point L234(lines 234 239) no Hoare annotation was computed. [2020-07-20 22:47:45,216 INFO L268 CegarLoopResult]: For program point L234-1(lines 232 244) no Hoare annotation was computed. [2020-07-20 22:47:45,217 INFO L268 CegarLoopResult]: For program point L218(line 218) no Hoare annotation was computed. [2020-07-20 22:47:45,217 INFO L268 CegarLoopResult]: For program point L218-2(line 218) no Hoare annotation was computed. [2020-07-20 22:47:45,217 INFO L268 CegarLoopResult]: For program point L210(line 210) no Hoare annotation was computed. [2020-07-20 22:47:45,217 INFO L268 CegarLoopResult]: For program point L202(lines 202 205) no Hoare annotation was computed. [2020-07-20 22:47:45,217 INFO L268 CegarLoopResult]: For program point Id_MCDC_89FINAL(lines 191 246) no Hoare annotation was computed. [2020-07-20 22:47:45,217 INFO L268 CegarLoopResult]: For program point L227(lines 227 230) no Hoare annotation was computed. [2020-07-20 22:47:45,217 INFO L268 CegarLoopResult]: For program point L219(line 219) no Hoare annotation was computed. [2020-07-20 22:47:45,217 INFO L268 CegarLoopResult]: For program point L215(line 215) no Hoare annotation was computed. [2020-07-20 22:47:45,218 INFO L268 CegarLoopResult]: For program point L215-2(line 215) no Hoare annotation was computed. [2020-07-20 22:47:45,218 INFO L271 CegarLoopResult]: At program point L207(lines 207 223) the Hoare annotation is: true [2020-07-20 22:47:45,218 INFO L268 CegarLoopResult]: For program point L232(line 232) no Hoare annotation was computed. [2020-07-20 22:47:45,218 INFO L268 CegarLoopResult]: For program point L232-2(line 232) no Hoare annotation was computed. [2020-07-20 22:47:45,218 INFO L268 CegarLoopResult]: For program point L232-3(line 232) no Hoare annotation was computed. [2020-07-20 22:47:45,218 INFO L268 CegarLoopResult]: For program point L232-5(lines 232 244) no Hoare annotation was computed. [2020-07-20 22:47:45,218 INFO L268 CegarLoopResult]: For program point L224-1(lines 224 231) no Hoare annotation was computed. [2020-07-20 22:47:45,218 INFO L271 CegarLoopResult]: At program point L224-3(lines 224 231) the Hoare annotation is: true [2020-07-20 22:47:45,219 INFO L268 CegarLoopResult]: For program point L224-4(lines 224 231) no Hoare annotation was computed. [2020-07-20 22:47:45,219 INFO L268 CegarLoopResult]: For program point L216(line 216) no Hoare annotation was computed. [2020-07-20 22:47:45,219 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-07-20 22:47:45,219 INFO L268 CegarLoopResult]: For program point L212-2(line 212) no Hoare annotation was computed. [2020-07-20 22:47:45,219 INFO L268 CegarLoopResult]: For program point L200(lines 200 206) no Hoare annotation was computed. [2020-07-20 22:47:45,219 INFO L268 CegarLoopResult]: For program point L200-2(lines 200 206) no Hoare annotation was computed. [2020-07-20 22:47:45,219 INFO L268 CegarLoopResult]: For program point L196(lines 196 199) no Hoare annotation was computed. [2020-07-20 22:47:45,220 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 425 456) the Hoare annotation is: true [2020-07-20 22:47:45,220 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 425 456) no Hoare annotation was computed. [2020-07-20 22:47:45,220 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 425 456) no Hoare annotation was computed. [2020-07-20 22:47:45,220 INFO L271 CegarLoopResult]: At program point L455(line 455) the Hoare annotation is: true [2020-07-20 22:47:45,220 INFO L268 CegarLoopResult]: For program point L450(lines 450 453) no Hoare annotation was computed. [2020-07-20 22:47:45,220 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 22:47:45,220 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 22:47:45,221 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 22:47:45,221 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 22:47:45,221 INFO L268 CegarLoopResult]: For program point L386-1(line 386) no Hoare annotation was computed. [2020-07-20 22:47:45,221 INFO L268 CegarLoopResult]: For program point L374-2(lines 374 391) no Hoare annotation was computed. [2020-07-20 22:47:45,221 INFO L271 CegarLoopResult]: At program point L374-3(lines 374 391) the Hoare annotation is: true [2020-07-20 22:47:45,221 INFO L268 CegarLoopResult]: For program point L374-4(lines 374 391) no Hoare annotation was computed. [2020-07-20 22:47:45,221 INFO L271 CegarLoopResult]: At program point Id_MCDC_97ENTRY(lines 329 397) the Hoare annotation is: true [2020-07-20 22:47:45,222 INFO L268 CegarLoopResult]: For program point Id_MCDC_97EXIT(lines 329 397) no Hoare annotation was computed. [2020-07-20 22:47:45,222 INFO L268 CegarLoopResult]: For program point L387(lines 387 390) no Hoare annotation was computed. [2020-07-20 22:47:45,222 INFO L268 CegarLoopResult]: For program point L354(lines 354 395) no Hoare annotation was computed. [2020-07-20 22:47:45,222 INFO L268 CegarLoopResult]: For program point L350-2(lines 350 353) no Hoare annotation was computed. [2020-07-20 22:47:45,222 INFO L264 CegarLoopResult]: At program point L350-3(lines 350 353) the Hoare annotation is: (= 6144 Id_MCDC_97_~Id_MCDC_123~0) [2020-07-20 22:47:45,222 INFO L268 CegarLoopResult]: For program point L350-4(lines 330 397) no Hoare annotation was computed. [2020-07-20 22:47:45,223 INFO L271 CegarLoopResult]: At program point L363(line 363) the Hoare annotation is: true [2020-07-20 22:47:45,223 INFO L268 CegarLoopResult]: For program point L363-1(lines 363 366) no Hoare annotation was computed. [2020-07-20 22:47:45,223 INFO L268 CegarLoopResult]: For program point Id_MCDC_97FINAL(lines 329 397) no Hoare annotation was computed. [2020-07-20 22:47:45,223 INFO L271 CegarLoopResult]: At program point L359(line 359) the Hoare annotation is: true [2020-07-20 22:47:45,223 INFO L268 CegarLoopResult]: For program point L359-1(lines 359 362) no Hoare annotation was computed. [2020-07-20 22:47:45,223 INFO L271 CegarLoopResult]: At program point L376(line 376) the Hoare annotation is: true [2020-07-20 22:47:45,223 INFO L268 CegarLoopResult]: For program point L376-1(lines 376 379) no Hoare annotation was computed. [2020-07-20 22:47:45,224 INFO L268 CegarLoopResult]: For program point L356-2(lines 356 394) no Hoare annotation was computed. [2020-07-20 22:47:45,224 INFO L271 CegarLoopResult]: At program point L356-3(lines 356 394) the Hoare annotation is: true [2020-07-20 22:47:45,224 INFO L271 CegarLoopResult]: At program point L369(line 369) the Hoare annotation is: true [2020-07-20 22:47:45,224 INFO L268 CegarLoopResult]: For program point L369-1(lines 369 372) no Hoare annotation was computed. [2020-07-20 22:47:45,224 INFO L271 CegarLoopResult]: At program point L386(line 386) the Hoare annotation is: true [2020-07-20 22:47:45,224 INFO L264 CegarLoopResult]: At program point L288(line 288) the Hoare annotation is: (= |Id_MCDC_95_#in~Id_MCDC_93| Id_MCDC_95_~Id_MCDC_93) [2020-07-20 22:47:45,225 INFO L268 CegarLoopResult]: For program point L288-1(line 288) no Hoare annotation was computed. [2020-07-20 22:47:45,225 INFO L268 CegarLoopResult]: For program point L286(lines 286 293) no Hoare annotation was computed. [2020-07-20 22:47:45,225 INFO L268 CegarLoopResult]: For program point L286-2(lines 286 293) no Hoare annotation was computed. [2020-07-20 22:47:45,225 INFO L268 CegarLoopResult]: For program point L282(lines 282 285) no Hoare annotation was computed. [2020-07-20 22:47:45,225 INFO L271 CegarLoopResult]: At program point Id_MCDC_95ENTRY(lines 278 297) the Hoare annotation is: true [2020-07-20 22:47:45,225 INFO L268 CegarLoopResult]: For program point Id_MCDC_95EXIT(lines 278 297) no Hoare annotation was computed. [2020-07-20 22:47:45,225 INFO L264 CegarLoopResult]: At program point L295(line 295) the Hoare annotation is: (= |Id_MCDC_95_#in~Id_MCDC_93| Id_MCDC_95_~Id_MCDC_93) [2020-07-20 22:47:45,226 INFO L264 CegarLoopResult]: At program point L294(line 294) the Hoare annotation is: (= |Id_MCDC_95_#in~Id_MCDC_93| Id_MCDC_95_~Id_MCDC_93) [2020-07-20 22:47:45,226 INFO L268 CegarLoopResult]: For program point L295-1(line 295) no Hoare annotation was computed. [2020-07-20 22:47:45,226 INFO L268 CegarLoopResult]: For program point L294-1(line 294) no Hoare annotation was computed. [2020-07-20 22:47:45,226 INFO L268 CegarLoopResult]: For program point Id_MCDC_95FINAL(lines 278 297) no Hoare annotation was computed. [2020-07-20 22:47:45,226 INFO L268 CegarLoopResult]: For program point L316(lines 316 321) no Hoare annotation was computed. [2020-07-20 22:47:45,226 INFO L268 CegarLoopResult]: For program point L316-1(lines 314 326) no Hoare annotation was computed. [2020-07-20 22:47:45,226 INFO L268 CegarLoopResult]: For program point L314(line 314) no Hoare annotation was computed. [2020-07-20 22:47:45,227 INFO L268 CegarLoopResult]: For program point L314-2(line 314) no Hoare annotation was computed. [2020-07-20 22:47:45,227 INFO L268 CegarLoopResult]: For program point L314-3(line 314) no Hoare annotation was computed. [2020-07-20 22:47:45,227 INFO L268 CegarLoopResult]: For program point L314-5(lines 314 326) no Hoare annotation was computed. [2020-07-20 22:47:45,227 INFO L268 CegarLoopResult]: For program point L306-1(lines 306 313) no Hoare annotation was computed. [2020-07-20 22:47:45,227 INFO L271 CegarLoopResult]: At program point L306-3(lines 306 313) the Hoare annotation is: true [2020-07-20 22:47:45,227 INFO L268 CegarLoopResult]: For program point L302(lines 302 305) no Hoare annotation was computed. [2020-07-20 22:47:45,227 INFO L268 CegarLoopResult]: For program point L306-4(lines 306 313) no Hoare annotation was computed. [2020-07-20 22:47:45,228 INFO L268 CegarLoopResult]: For program point Id_MCDC_96FINAL(lines 298 328) no Hoare annotation was computed. [2020-07-20 22:47:45,228 INFO L268 CegarLoopResult]: For program point L309(lines 309 312) no Hoare annotation was computed. [2020-07-20 22:47:45,228 INFO L271 CegarLoopResult]: At program point Id_MCDC_96ENTRY(lines 298 328) the Hoare annotation is: true [2020-07-20 22:47:45,228 INFO L268 CegarLoopResult]: For program point Id_MCDC_96EXIT(lines 298 328) no Hoare annotation was computed. [2020-07-20 22:47:45,228 INFO L268 CegarLoopResult]: For program point Id_MCDC_92EXIT(lines 247 277) no Hoare annotation was computed. [2020-07-20 22:47:45,228 INFO L268 CegarLoopResult]: For program point Id_MCDC_92FINAL(lines 247 277) no Hoare annotation was computed. [2020-07-20 22:47:45,228 INFO L268 CegarLoopResult]: For program point L259(lines 259 267) no Hoare annotation was computed. [2020-07-20 22:47:45,229 INFO L268 CegarLoopResult]: For program point L253(lines 253 267) no Hoare annotation was computed. [2020-07-20 22:47:45,229 INFO L271 CegarLoopResult]: At program point Id_MCDC_92ENTRY(lines 247 277) the Hoare annotation is: true [2020-07-20 22:47:45,229 INFO L271 CegarLoopResult]: At program point L272(line 272) the Hoare annotation is: true [2020-07-20 22:47:45,229 INFO L268 CegarLoopResult]: For program point L272-1(line 272) no Hoare annotation was computed. [2020-07-20 22:47:45,229 INFO L271 CegarLoopResult]: At program point L270(line 270) the Hoare annotation is: true [2020-07-20 22:47:45,229 INFO L268 CegarLoopResult]: For program point L270-1(line 270) no Hoare annotation was computed. [2020-07-20 22:47:45,229 INFO L268 CegarLoopResult]: For program point L268-1(lines 248 277) no Hoare annotation was computed. [2020-07-20 22:47:45,229 INFO L268 CegarLoopResult]: For program point L268-2(lines 268 275) no Hoare annotation was computed. [2020-07-20 22:47:45,230 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:47:45,230 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 22:47:45,230 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:47:45,230 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:47:45,230 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 22:47:45,230 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 22:47:45,230 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:47:45,231 INFO L268 CegarLoopResult]: For program point avoid_zeroEXIT(lines 7 13) no Hoare annotation was computed. [2020-07-20 22:47:45,231 INFO L268 CegarLoopResult]: For program point L9(lines 9 12) no Hoare annotation was computed. [2020-07-20 22:47:45,231 INFO L268 CegarLoopResult]: For program point L9-2(lines 7 13) no Hoare annotation was computed. [2020-07-20 22:47:45,231 INFO L271 CegarLoopResult]: At program point avoid_zeroENTRY(lines 7 13) the Hoare annotation is: true [2020-07-20 22:47:45,231 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 457 464) the Hoare annotation is: true [2020-07-20 22:47:45,231 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-20 22:47:45,231 INFO L268 CegarLoopResult]: For program point L459(lines 459 462) no Hoare annotation was computed. [2020-07-20 22:47:45,231 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 457 464) no Hoare annotation was computed. [2020-07-20 22:47:45,232 INFO L268 CegarLoopResult]: For program point L459-2(lines 457 464) no Hoare annotation was computed. [2020-07-20 22:47:45,232 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 461) no Hoare annotation was computed. [2020-07-20 22:47:45,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:47:45 BoogieIcfgContainer [2020-07-20 22:47:45,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 22:47:45,255 INFO L168 Benchmark]: Toolchain (without parser) took 6055.00 ms. Allocated memory was 138.4 MB in the beginning and 249.6 MB in the end (delta: 111.1 MB). Free memory was 102.4 MB in the beginning and 121.8 MB in the end (delta: -19.4 MB). Peak memory consumption was 91.7 MB. Max. memory is 7.1 GB. [2020-07-20 22:47:45,256 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 22:47:45,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 600.46 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 172.3 MB in the end (delta: -70.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-07-20 22:47:45,258 INFO L168 Benchmark]: Boogie Preprocessor took 92.09 ms. Allocated memory is still 201.9 MB. Free memory was 172.3 MB in the beginning and 167.9 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-07-20 22:47:45,259 INFO L168 Benchmark]: RCFGBuilder took 1036.32 ms. Allocated memory is still 201.9 MB. Free memory was 167.9 MB in the beginning and 106.0 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 7.1 GB. [2020-07-20 22:47:45,260 INFO L168 Benchmark]: TraceAbstraction took 4316.21 ms. Allocated memory was 201.9 MB in the beginning and 249.6 MB in the end (delta: 47.7 MB). Free memory was 106.0 MB in the beginning and 121.8 MB in the end (delta: -15.8 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. [2020-07-20 22:47:45,264 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 600.46 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 172.3 MB in the end (delta: -70.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.09 ms. Allocated memory is still 201.9 MB. Free memory was 172.3 MB in the beginning and 167.9 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1036.32 ms. Allocated memory is still 201.9 MB. Free memory was 167.9 MB in the beginning and 106.0 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4316.21 ms. Allocated memory was 201.9 MB in the beginning and 249.6 MB in the end (delta: 47.7 MB). Free memory was 106.0 MB in the beginning and 121.8 MB in the end (delta: -15.8 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 461]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 207]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 224]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 404]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 374]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 350]: Loop Invariant Derived loop invariant: 6144 == Id_MCDC_123 - InvariantResult [Line: 306]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 356]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 132 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1017 SDtfs, 106 SDslu, 2073 SDs, 0 SdLazy, 103 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 330 GetRequests, 308 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=5, 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, 6 MinimizatonAttempts, 45 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 135 PreInvPairs, 163 NumberOfFragments, 42 HoareAnnotationTreeSize, 135 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 34 FomulaSimplificationsInter, 87 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 277 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 19255 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2191 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 16/20 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 proved your program to be correct! Received shutdown request...