/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 BIGGEST_EQUIVALENCE_CLASS --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_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 23:37:11,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 23:37:11,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 23:37:11,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 23:37:11,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 23:37:11,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 23:37:11,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 23:37:11,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 23:37:11,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 23:37:11,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 23:37:11,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 23:37:11,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 23:37:11,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 23:37:11,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 23:37:11,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 23:37:11,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 23:37:11,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 23:37:11,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 23:37:11,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 23:37:11,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 23:37:11,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 23:37:11,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 23:37:11,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 23:37:11,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 23:37:11,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 23:37:11,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 23:37:11,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 23:37:11,189 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 23:37:11,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 23:37:11,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-21 23:37:11,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 23:37:11,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 23:37:11,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 23:37:11,198 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 [2020-07-21 23:37:11,215 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 23:37:11,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 23:37:11,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 23:37:11,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 23:37:11,217 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 23:37:11,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 23:37:11,218 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 23:37:11,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 23:37:11,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 23:37:11,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 23:37:11,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 23:37:11,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 23:37:11,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 23:37:11,219 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 23:37:11,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 23:37:11,220 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 23:37:11,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 23:37:11,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 23:37:11,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 23:37:11,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 23:37:11,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 23:37:11,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:37:11,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 23:37:11,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 23:37:11,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 23:37:11,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 23:37:11,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:37:11,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 23:37:11,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 23:37:11,222 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 -> BIGGEST_EQUIVALENCE_CLASS 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 [2020-07-21 23:37:11,547 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 23:37:11,562 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 23:37:11,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 23:37:11,568 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 23:37:11,569 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 23:37:11,570 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c [2020-07-21 23:37:11,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/826344833/87ae472dc90b42a5805bad75d471e1dc/FLAG1876b1010 [2020-07-21 23:37:12,257 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 23:37:12,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c [2020-07-21 23:37:12,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/826344833/87ae472dc90b42a5805bad75d471e1dc/FLAG1876b1010 [2020-07-21 23:37:12,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/826344833/87ae472dc90b42a5805bad75d471e1dc [2020-07-21 23:37:12,493 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 23:37:12,497 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 23:37:12,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 23:37:12,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 23:37:12,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 23:37:12,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:37:12" (1/1) ... [2020-07-21 23:37:12,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c780d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:12, skipping insertion in model container [2020-07-21 23:37:12,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:37:12" (1/1) ... [2020-07-21 23:37:12,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 23:37:12,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 23:37:13,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:37:13,077 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 23:37:13,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:37:13,209 INFO L208 MainTranslator]: Completed translation [2020-07-21 23:37:13,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:13 WrapperNode [2020-07-21 23:37:13,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 23:37:13,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 23:37:13,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 23:37:13,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 23:37:13,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:13" (1/1) ... [2020-07-21 23:37:13,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:13" (1/1) ... [2020-07-21 23:37:13,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:13" (1/1) ... [2020-07-21 23:37:13,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:13" (1/1) ... [2020-07-21 23:37:13,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:13" (1/1) ... [2020-07-21 23:37:13,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:13" (1/1) ... [2020-07-21 23:37:13,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:13" (1/1) ... [2020-07-21 23:37:13,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 23:37:13,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 23:37:13,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 23:37:13,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 23:37:13,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:13" (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 [2020-07-21 23:37:13,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 23:37:13,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 23:37:13,430 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 23:37:13,430 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-07-21 23:37:13,431 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2020-07-21 23:37:13,432 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2020-07-21 23:37:13,432 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2020-07-21 23:37:13,432 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2020-07-21 23:37:13,432 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2020-07-21 23:37:13,432 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2020-07-21 23:37:13,434 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2020-07-21 23:37:13,434 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 23:37:13,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 23:37:13,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 23:37:13,435 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 23:37:13,436 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 23:37:13,436 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-07-21 23:37:13,436 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-21 23:37:13,437 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-07-21 23:37:13,437 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2020-07-21 23:37:13,437 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2020-07-21 23:37:13,438 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2020-07-21 23:37:13,439 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2020-07-21 23:37:13,439 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 23:37:13,439 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2020-07-21 23:37:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2020-07-21 23:37:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-21 23:37:13,441 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 23:37:13,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 23:37:13,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 23:37:13,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 23:37:13,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 23:37:13,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 23:37:13,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 23:37:13,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 23:37:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 23:37:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 23:37:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 23:37:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-21 23:37:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 23:37:14,493 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 23:37:14,494 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-21 23:37:14,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:37:14 BoogieIcfgContainer [2020-07-21 23:37:14,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 23:37:14,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 23:37:14,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 23:37:14,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 23:37:14,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:37:12" (1/3) ... [2020-07-21 23:37:14,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a76599b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:37:14, skipping insertion in model container [2020-07-21 23:37:14,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:37:13" (2/3) ... [2020-07-21 23:37:14,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a76599b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:37:14, skipping insertion in model container [2020-07-21 23:37:14,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:37:14" (3/3) ... [2020-07-21 23:37:14,510 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_5.c [2020-07-21 23:37:14,522 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 23:37:14,530 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 23:37:14,543 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 23:37:14,570 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 23:37:14,570 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 23:37:14,570 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 23:37:14,570 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 23:37:14,571 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 23:37:14,571 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 23:37:14,571 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 23:37:14,571 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 23:37:14,596 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-07-21 23:37:14,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-21 23:37:14,608 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:37:14,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:37:14,610 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:37:14,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:37:14,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1328586124, now seen corresponding path program 1 times [2020-07-21 23:37:14,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:37:14,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033237406] [2020-07-21 23:37:14,629 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 [2020-07-21 23:37:14,973 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:37:14,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:37:14,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 23:37:15,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:37:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:37:15,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:37:15,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033237406] [2020-07-21 23:37:15,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:37:15,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:37:15,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147594689] [2020-07-21 23:37:15,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:37:15,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:37:15,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:37:15,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:37:15,106 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 3 states. [2020-07-21 23:37:15,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:37:15,210 INFO L93 Difference]: Finished difference Result 264 states and 407 transitions. [2020-07-21 23:37:15,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:37:15,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-07-21 23:37:15,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:37:15,229 INFO L225 Difference]: With dead ends: 264 [2020-07-21 23:37:15,229 INFO L226 Difference]: Without dead ends: 141 [2020-07-21 23:37:15,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:37:15,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-07-21 23:37:15,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 121. [2020-07-21 23:37:15,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-21 23:37:15,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 168 transitions. [2020-07-21 23:37:15,315 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 168 transitions. Word has length 43 [2020-07-21 23:37:15,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:37:15,316 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 168 transitions. [2020-07-21 23:37:15,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:37:15,316 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 168 transitions. [2020-07-21 23:37:15,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-21 23:37:15,321 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:37:15,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:37:15,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:37:15,525 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:37:15,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:37:15,526 INFO L82 PathProgramCache]: Analyzing trace with hash -294008176, now seen corresponding path program 1 times [2020-07-21 23:37:15,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:37:15,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365683690] [2020-07-21 23:37:15,528 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 [2020-07-21 23:37:15,763 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:37:15,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:37:15,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 23:37:15,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:37:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:37:15,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:37:15,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:37:15,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365683690] [2020-07-21 23:37:15,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:37:15,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 23:37:15,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025801649] [2020-07-21 23:37:15,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 23:37:15,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:37:15,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 23:37:15,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 23:37:15,913 INFO L87 Difference]: Start difference. First operand 121 states and 168 transitions. Second operand 6 states. [2020-07-21 23:37:16,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:37:16,159 INFO L93 Difference]: Finished difference Result 308 states and 452 transitions. [2020-07-21 23:37:16,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 23:37:16,160 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-07-21 23:37:16,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:37:16,165 INFO L225 Difference]: With dead ends: 308 [2020-07-21 23:37:16,165 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 23:37:16,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-07-21 23:37:16,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 23:37:16,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 127. [2020-07-21 23:37:16,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-07-21 23:37:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 174 transitions. [2020-07-21 23:37:16,225 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 174 transitions. Word has length 45 [2020-07-21 23:37:16,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:37:16,225 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 174 transitions. [2020-07-21 23:37:16,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 23:37:16,225 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 174 transitions. [2020-07-21 23:37:16,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-21 23:37:16,231 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:37:16,232 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:37:16,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:37:16,435 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:37:16,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:37:16,436 INFO L82 PathProgramCache]: Analyzing trace with hash -375236310, now seen corresponding path program 1 times [2020-07-21 23:37:16,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:37:16,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562970297] [2020-07-21 23:37:16,437 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 [2020-07-21 23:37:16,746 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:37:16,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:37:16,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 23:37:16,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:37:16,772 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-07-21 23:37:16,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:37:16,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562970297] [2020-07-21 23:37:16,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:37:16,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:37:16,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714613138] [2020-07-21 23:37:16,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:37:16,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:37:16,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:37:16,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:37:16,776 INFO L87 Difference]: Start difference. First operand 127 states and 174 transitions. Second operand 3 states. [2020-07-21 23:37:16,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:37:16,814 INFO L93 Difference]: Finished difference Result 166 states and 223 transitions. [2020-07-21 23:37:16,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:37:16,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-07-21 23:37:16,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:37:16,817 INFO L225 Difference]: With dead ends: 166 [2020-07-21 23:37:16,817 INFO L226 Difference]: Without dead ends: 131 [2020-07-21 23:37:16,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:37:16,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-07-21 23:37:16,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-07-21 23:37:16,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-21 23:37:16,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 175 transitions. [2020-07-21 23:37:16,833 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 175 transitions. Word has length 55 [2020-07-21 23:37:16,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:37:16,834 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 175 transitions. [2020-07-21 23:37:16,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:37:16,835 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 175 transitions. [2020-07-21 23:37:16,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-21 23:37:16,838 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:37:16,838 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:37:17,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:37:17,053 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:37:17,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:37:17,054 INFO L82 PathProgramCache]: Analyzing trace with hash -2144510083, now seen corresponding path program 1 times [2020-07-21 23:37:17,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:37:17,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533205443] [2020-07-21 23:37:17,055 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 [2020-07-21 23:37:17,324 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:37:17,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:37:17,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 23:37:17,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:37:17,359 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-21 23:37:17,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:37:17,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533205443] [2020-07-21 23:37:17,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:37:17,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:37:17,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403099269] [2020-07-21 23:37:17,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:37:17,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:37:17,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:37:17,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:37:17,362 INFO L87 Difference]: Start difference. First operand 128 states and 175 transitions. Second operand 3 states. [2020-07-21 23:37:17,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:37:17,388 INFO L93 Difference]: Finished difference Result 180 states and 242 transitions. [2020-07-21 23:37:17,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:37:17,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-07-21 23:37:17,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:37:17,391 INFO L225 Difference]: With dead ends: 180 [2020-07-21 23:37:17,391 INFO L226 Difference]: Without dead ends: 136 [2020-07-21 23:37:17,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:37:17,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-21 23:37:17,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 128. [2020-07-21 23:37:17,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-21 23:37:17,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 174 transitions. [2020-07-21 23:37:17,406 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 174 transitions. Word has length 55 [2020-07-21 23:37:17,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:37:17,406 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 174 transitions. [2020-07-21 23:37:17,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:37:17,407 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 174 transitions. [2020-07-21 23:37:17,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-21 23:37:17,409 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:37:17,409 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:37:17,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:37:17,625 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:37:17,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:37:17,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1776861212, now seen corresponding path program 1 times [2020-07-21 23:37:17,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:37:17,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582877593] [2020-07-21 23:37:17,628 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 [2020-07-21 23:37:17,962 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 23:37:17,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:37:17,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 23:37:17,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:37:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-21 23:37:18,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:37:18,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582877593] [2020-07-21 23:37:18,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:37:18,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:37:18,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164233088] [2020-07-21 23:37:18,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:37:18,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:37:18,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:37:18,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:37:18,007 INFO L87 Difference]: Start difference. First operand 128 states and 174 transitions. Second operand 3 states. [2020-07-21 23:37:18,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:37:18,045 INFO L93 Difference]: Finished difference Result 190 states and 258 transitions. [2020-07-21 23:37:18,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:37:18,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-07-21 23:37:18,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:37:18,049 INFO L225 Difference]: With dead ends: 190 [2020-07-21 23:37:18,049 INFO L226 Difference]: Without dead ends: 146 [2020-07-21 23:37:18,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:37:18,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-07-21 23:37:18,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 129. [2020-07-21 23:37:18,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-07-21 23:37:18,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 175 transitions. [2020-07-21 23:37:18,081 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 175 transitions. Word has length 56 [2020-07-21 23:37:18,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:37:18,087 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 175 transitions. [2020-07-21 23:37:18,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:37:18,087 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 175 transitions. [2020-07-21 23:37:18,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-21 23:37:18,091 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:37:18,092 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:37:18,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:37:18,307 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:37:18,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:37:18,308 INFO L82 PathProgramCache]: Analyzing trace with hash 450483994, now seen corresponding path program 1 times [2020-07-21 23:37:18,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:37:18,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181584328] [2020-07-21 23:37:18,309 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 [2020-07-21 23:37:18,753 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:37:18,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:37:18,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 23:37:18,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:37:18,787 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 23:37:18,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:37:18,862 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 23:37:18,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181584328] [2020-07-21 23:37:18,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:37:18,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 23:37:18,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089908880] [2020-07-21 23:37:18,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 23:37:18,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:37:18,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 23:37:18,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 23:37:18,867 INFO L87 Difference]: Start difference. First operand 129 states and 175 transitions. Second operand 6 states. [2020-07-21 23:37:18,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:37:18,968 INFO L93 Difference]: Finished difference Result 176 states and 238 transitions. [2020-07-21 23:37:18,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 23:37:18,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-07-21 23:37:18,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:37:18,971 INFO L225 Difference]: With dead ends: 176 [2020-07-21 23:37:18,972 INFO L226 Difference]: Without dead ends: 141 [2020-07-21 23:37:18,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-07-21 23:37:18,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-07-21 23:37:18,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-07-21 23:37:18,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-07-21 23:37:18,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 193 transitions. [2020-07-21 23:37:18,991 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 193 transitions. Word has length 61 [2020-07-21 23:37:18,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:37:18,992 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 193 transitions. [2020-07-21 23:37:18,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 23:37:18,992 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 193 transitions. [2020-07-21 23:37:18,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-07-21 23:37:18,995 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:37:18,995 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:37:19,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:37:19,210 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:37:19,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:37:19,211 INFO L82 PathProgramCache]: Analyzing trace with hash -374866097, now seen corresponding path program 2 times [2020-07-21 23:37:19,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:37:19,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040750065] [2020-07-21 23:37:19,212 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:37:20,201 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:37:20,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:37:20,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 23:37:20,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:37:20,255 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 23:37:20,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:37:20,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040750065] [2020-07-21 23:37:20,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:37:20,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 23:37:20,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086324354] [2020-07-21 23:37:20,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 23:37:20,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:37:20,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 23:37:20,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 23:37:20,259 INFO L87 Difference]: Start difference. First operand 141 states and 193 transitions. Second operand 4 states. [2020-07-21 23:37:20,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:37:20,319 INFO L93 Difference]: Finished difference Result 185 states and 247 transitions. [2020-07-21 23:37:20,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 23:37:20,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-07-21 23:37:20,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:37:20,323 INFO L225 Difference]: With dead ends: 185 [2020-07-21 23:37:20,323 INFO L226 Difference]: Without dead ends: 153 [2020-07-21 23:37:20,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:37:20,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-07-21 23:37:20,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2020-07-21 23:37:20,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-07-21 23:37:20,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 209 transitions. [2020-07-21 23:37:20,341 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 209 transitions. Word has length 73 [2020-07-21 23:37:20,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:37:20,343 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 209 transitions. [2020-07-21 23:37:20,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 23:37:20,343 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 209 transitions. [2020-07-21 23:37:20,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-07-21 23:37:20,345 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:37:20,345 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2020-07-21 23:37:20,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:37:20,560 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:37:20,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:37:20,561 INFO L82 PathProgramCache]: Analyzing trace with hash -418943133, now seen corresponding path program 1 times [2020-07-21 23:37:20,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:37:20,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395116914] [2020-07-21 23:37:20,562 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:37:21,547 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:37:21,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:37:21,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 23:37:21,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:37:21,612 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 23:37:21,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:37:21,759 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 23:37:21,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395116914] [2020-07-21 23:37:21,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:37:21,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2020-07-21 23:37:21,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358321148] [2020-07-21 23:37:21,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 23:37:21,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:37:21,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 23:37:21,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-21 23:37:21,763 INFO L87 Difference]: Start difference. First operand 153 states and 209 transitions. Second operand 11 states. [2020-07-21 23:37:22,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:37:22,440 INFO L93 Difference]: Finished difference Result 260 states and 354 transitions. [2020-07-21 23:37:22,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 23:37:22,443 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2020-07-21 23:37:22,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:37:22,450 INFO L225 Difference]: With dead ends: 260 [2020-07-21 23:37:22,451 INFO L226 Difference]: Without dead ends: 222 [2020-07-21 23:37:22,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-07-21 23:37:22,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-07-21 23:37:22,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 198. [2020-07-21 23:37:22,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-07-21 23:37:22,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 269 transitions. [2020-07-21 23:37:22,467 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 269 transitions. Word has length 77 [2020-07-21 23:37:22,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:37:22,468 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 269 transitions. [2020-07-21 23:37:22,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 23:37:22,468 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 269 transitions. [2020-07-21 23:37:22,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-07-21 23:37:22,470 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:37:22,470 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1] [2020-07-21 23:37:22,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:37:22,683 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:37:22,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:37:22,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1212724599, now seen corresponding path program 2 times [2020-07-21 23:37:22,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:37:22,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362668184] [2020-07-21 23:37:22,686 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:37:25,198 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:37:25,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:37:25,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:37:25,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:37:25,267 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 23:37:25,289 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-07-21 23:37:25,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:37:25,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362668184] [2020-07-21 23:37:25,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:37:25,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 23:37:25,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238467393] [2020-07-21 23:37:25,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 23:37:25,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:37:25,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 23:37:25,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:37:25,293 INFO L87 Difference]: Start difference. First operand 198 states and 269 transitions. Second operand 5 states. [2020-07-21 23:37:25,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:37:25,345 INFO L93 Difference]: Finished difference Result 267 states and 360 transitions. [2020-07-21 23:37:25,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 23:37:25,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-07-21 23:37:25,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:37:25,349 INFO L225 Difference]: With dead ends: 267 [2020-07-21 23:37:25,349 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 23:37:25,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 23:37:25,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 23:37:25,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 23:37:25,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 23:37:25,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 23:37:25,353 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2020-07-21 23:37:25,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:37:25,353 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 23:37:25,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 23:37:25,353 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 23:37:25,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 23:37:25,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:37:25,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 23:37:26,284 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-07-21 23:37:26,481 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-07-21 23:37:26,683 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-07-21 23:37:26,882 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-07-21 23:37:26,903 INFO L268 CegarLoopResult]: For program point Id_MCDC_100FINAL(lines 418 424) no Hoare annotation was computed. [2020-07-21 23:37:26,903 INFO L268 CegarLoopResult]: For program point Id_MCDC_100EXIT(lines 418 424) no Hoare annotation was computed. [2020-07-21 23:37:26,903 INFO L271 CegarLoopResult]: At program point Id_MCDC_100ENTRY(lines 418 424) the Hoare annotation is: true [2020-07-21 23:37:26,904 INFO L271 CegarLoopResult]: At program point L422(line 422) the Hoare annotation is: true [2020-07-21 23:37:26,904 INFO L268 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-07-21 23:37:26,904 INFO L264 CegarLoopResult]: At program point L403(line 403) the Hoare annotation is: (= 0 Id_MCDC_99_~Id_MCDC_140~0) [2020-07-21 23:37:26,904 INFO L268 CegarLoopResult]: For program point L403-1(line 403) no Hoare annotation was computed. [2020-07-21 23:37:26,904 INFO L271 CegarLoopResult]: At program point Id_MCDC_99ENTRY(lines 398 417) the Hoare annotation is: true [2020-07-21 23:37:26,904 INFO L268 CegarLoopResult]: For program point Id_MCDC_99EXIT(lines 398 417) no Hoare annotation was computed. [2020-07-21 23:37:26,905 INFO L268 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-07-21 23:37:26,905 INFO L268 CegarLoopResult]: For program point L406-2(lines 406 413) no Hoare annotation was computed. [2020-07-21 23:37:26,905 INFO L268 CegarLoopResult]: For program point L404-2(lines 404 414) no Hoare annotation was computed. [2020-07-21 23:37:26,905 INFO L271 CegarLoopResult]: At program point L404-3(lines 404 414) the Hoare annotation is: true [2020-07-21 23:37:26,905 INFO L271 CegarLoopResult]: At program point L404-4(lines 404 414) the Hoare annotation is: true [2020-07-21 23:37:26,905 INFO L268 CegarLoopResult]: For program point Id_MCDC_99FINAL(lines 398 417) no Hoare annotation was computed. [2020-07-21 23:37:26,906 INFO L268 CegarLoopResult]: For program point L221(line 221) no Hoare annotation was computed. [2020-07-21 23:37:26,906 INFO L268 CegarLoopResult]: For program point L213(line 213) no Hoare annotation was computed. [2020-07-21 23:37:26,906 INFO L268 CegarLoopResult]: For program point L209(line 209) no Hoare annotation was computed. [2020-07-21 23:37:26,906 INFO L268 CegarLoopResult]: For program point L209-2(line 209) no Hoare annotation was computed. [2020-07-21 23:37:26,906 INFO L271 CegarLoopResult]: At program point Id_MCDC_89ENTRY(lines 191 246) the Hoare annotation is: true [2020-07-21 23:37:26,906 INFO L268 CegarLoopResult]: For program point Id_MCDC_89EXIT(lines 191 246) no Hoare annotation was computed. [2020-07-21 23:37:26,906 INFO L268 CegarLoopResult]: For program point L234(lines 234 239) no Hoare annotation was computed. [2020-07-21 23:37:26,907 INFO L268 CegarLoopResult]: For program point L234-1(lines 232 244) no Hoare annotation was computed. [2020-07-21 23:37:26,907 INFO L268 CegarLoopResult]: For program point L218(line 218) no Hoare annotation was computed. [2020-07-21 23:37:26,907 INFO L268 CegarLoopResult]: For program point L218-2(line 218) no Hoare annotation was computed. [2020-07-21 23:37:26,907 INFO L268 CegarLoopResult]: For program point L210(line 210) no Hoare annotation was computed. [2020-07-21 23:37:26,907 INFO L268 CegarLoopResult]: For program point L202(lines 202 205) no Hoare annotation was computed. [2020-07-21 23:37:26,907 INFO L268 CegarLoopResult]: For program point Id_MCDC_89FINAL(lines 191 246) no Hoare annotation was computed. [2020-07-21 23:37:26,907 INFO L268 CegarLoopResult]: For program point L227(lines 227 230) no Hoare annotation was computed. [2020-07-21 23:37:26,907 INFO L268 CegarLoopResult]: For program point L219(line 219) no Hoare annotation was computed. [2020-07-21 23:37:26,907 INFO L268 CegarLoopResult]: For program point L215(line 215) no Hoare annotation was computed. [2020-07-21 23:37:26,907 INFO L268 CegarLoopResult]: For program point L215-2(line 215) no Hoare annotation was computed. [2020-07-21 23:37:26,907 INFO L271 CegarLoopResult]: At program point L207(lines 207 223) the Hoare annotation is: true [2020-07-21 23:37:26,908 INFO L268 CegarLoopResult]: For program point L232(line 232) no Hoare annotation was computed. [2020-07-21 23:37:26,908 INFO L268 CegarLoopResult]: For program point L232-2(line 232) no Hoare annotation was computed. [2020-07-21 23:37:26,908 INFO L268 CegarLoopResult]: For program point L232-3(line 232) no Hoare annotation was computed. [2020-07-21 23:37:26,908 INFO L268 CegarLoopResult]: For program point L232-5(lines 232 244) no Hoare annotation was computed. [2020-07-21 23:37:26,908 INFO L268 CegarLoopResult]: For program point L224-1(lines 224 231) no Hoare annotation was computed. [2020-07-21 23:37:26,908 INFO L271 CegarLoopResult]: At program point L224-3(lines 224 231) the Hoare annotation is: true [2020-07-21 23:37:26,908 INFO L268 CegarLoopResult]: For program point L224-4(lines 224 231) no Hoare annotation was computed. [2020-07-21 23:37:26,908 INFO L268 CegarLoopResult]: For program point L216(line 216) no Hoare annotation was computed. [2020-07-21 23:37:26,908 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-07-21 23:37:26,909 INFO L268 CegarLoopResult]: For program point L212-2(line 212) no Hoare annotation was computed. [2020-07-21 23:37:26,909 INFO L268 CegarLoopResult]: For program point L200(lines 200 206) no Hoare annotation was computed. [2020-07-21 23:37:26,909 INFO L268 CegarLoopResult]: For program point L200-2(lines 200 206) no Hoare annotation was computed. [2020-07-21 23:37:26,909 INFO L268 CegarLoopResult]: For program point L196(lines 196 199) no Hoare annotation was computed. [2020-07-21 23:37:26,909 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 425 456) the Hoare annotation is: true [2020-07-21 23:37:26,909 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 425 456) no Hoare annotation was computed. [2020-07-21 23:37:26,909 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 425 456) no Hoare annotation was computed. [2020-07-21 23:37:26,909 INFO L271 CegarLoopResult]: At program point L455(line 455) the Hoare annotation is: true [2020-07-21 23:37:26,909 INFO L268 CegarLoopResult]: For program point L450(lines 450 453) no Hoare annotation was computed. [2020-07-21 23:37:26,909 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-21 23:37:26,909 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 23:37:26,910 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-21 23:37:26,910 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-21 23:37:26,910 INFO L268 CegarLoopResult]: For program point L386-1(line 386) no Hoare annotation was computed. [2020-07-21 23:37:26,910 INFO L268 CegarLoopResult]: For program point L374-2(lines 374 391) no Hoare annotation was computed. [2020-07-21 23:37:26,910 INFO L271 CegarLoopResult]: At program point L374-3(lines 374 391) the Hoare annotation is: true [2020-07-21 23:37:26,910 INFO L268 CegarLoopResult]: For program point L374-4(lines 374 391) no Hoare annotation was computed. [2020-07-21 23:37:26,910 INFO L271 CegarLoopResult]: At program point Id_MCDC_97ENTRY(lines 329 397) the Hoare annotation is: true [2020-07-21 23:37:26,910 INFO L268 CegarLoopResult]: For program point Id_MCDC_97EXIT(lines 329 397) no Hoare annotation was computed. [2020-07-21 23:37:26,911 INFO L268 CegarLoopResult]: For program point L387(lines 387 390) no Hoare annotation was computed. [2020-07-21 23:37:26,911 INFO L268 CegarLoopResult]: For program point L354(lines 354 395) no Hoare annotation was computed. [2020-07-21 23:37:26,911 INFO L268 CegarLoopResult]: For program point L350-2(lines 350 353) no Hoare annotation was computed. [2020-07-21 23:37:26,911 INFO L264 CegarLoopResult]: At program point L350-3(lines 350 353) the Hoare annotation is: (= 6144 Id_MCDC_97_~Id_MCDC_123~0) [2020-07-21 23:37:26,911 INFO L268 CegarLoopResult]: For program point L350-4(lines 330 397) no Hoare annotation was computed. [2020-07-21 23:37:26,911 INFO L271 CegarLoopResult]: At program point L363(line 363) the Hoare annotation is: true [2020-07-21 23:37:26,911 INFO L268 CegarLoopResult]: For program point L363-1(lines 363 366) no Hoare annotation was computed. [2020-07-21 23:37:26,912 INFO L268 CegarLoopResult]: For program point Id_MCDC_97FINAL(lines 329 397) no Hoare annotation was computed. [2020-07-21 23:37:26,912 INFO L271 CegarLoopResult]: At program point L359(line 359) the Hoare annotation is: true [2020-07-21 23:37:26,912 INFO L268 CegarLoopResult]: For program point L359-1(lines 359 362) no Hoare annotation was computed. [2020-07-21 23:37:26,912 INFO L271 CegarLoopResult]: At program point L376(line 376) the Hoare annotation is: true [2020-07-21 23:37:26,912 INFO L268 CegarLoopResult]: For program point L376-1(lines 376 379) no Hoare annotation was computed. [2020-07-21 23:37:26,912 INFO L268 CegarLoopResult]: For program point L356-2(lines 356 394) no Hoare annotation was computed. [2020-07-21 23:37:26,912 INFO L271 CegarLoopResult]: At program point L356-3(lines 356 394) the Hoare annotation is: true [2020-07-21 23:37:26,913 INFO L271 CegarLoopResult]: At program point L369(line 369) the Hoare annotation is: true [2020-07-21 23:37:26,913 INFO L268 CegarLoopResult]: For program point L369-1(lines 369 372) no Hoare annotation was computed. [2020-07-21 23:37:26,913 INFO L271 CegarLoopResult]: At program point L386(line 386) the Hoare annotation is: true [2020-07-21 23:37:26,913 INFO L271 CegarLoopResult]: At program point Id_MCDC_95ENTRY(lines 278 297) the Hoare annotation is: true [2020-07-21 23:37:26,913 INFO L268 CegarLoopResult]: For program point Id_MCDC_95EXIT(lines 278 297) no Hoare annotation was computed. [2020-07-21 23:37:26,913 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-07-21 23:37:26,913 INFO L264 CegarLoopResult]: At program point L294(line 294) the Hoare annotation is: (and (or (= 4 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4))) (or (= 3 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 3))) (or (and (not (< 2 (mod |Id_MCDC_95_#in~Id_MCDC_93| 4294967296))) (not (< (mod |Id_MCDC_95_#in~Id_MCDC_93| 4294967296) 2))) (< 2 (mod Id_MCDC_95_~Id_MCDC_93 4294967296))) (or (and (not (< (mod (+ |Id_MCDC_95_#in~Id_MCDC_93| 4294967295) 4294967296) 2)) (not (< 2 (mod (+ |Id_MCDC_95_#in~Id_MCDC_93| 4294967295) 4294967296)))) (< (mod (+ Id_MCDC_95_~Id_MCDC_93 4294967295) 4294967296) 2) (< 2 (mod (+ Id_MCDC_95_~Id_MCDC_93 4294967295) 4294967296)))) [2020-07-21 23:37:26,914 INFO L264 CegarLoopResult]: At program point L296-2(line 296) the Hoare annotation is: (and (or (= 4 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4))) (or (and (not (< 2 (mod (+ |Id_MCDC_95_#in~Id_MCDC_93| 4294967295) 4294967296))) (not (< (mod (+ |Id_MCDC_95_#in~Id_MCDC_93| 4294967295) 4294967296) 2))) (and |Id_MCDC_95_#t~short23| (or (< 2 (mod (+ Id_MCDC_95_~Id_MCDC_93 4294967295) 4294967296)) (< (mod (+ Id_MCDC_95_~Id_MCDC_93 4294967295) 4294967296) 2)))) (or (= 3 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 3))) (or (and |Id_MCDC_95_#t~short23| (< 2 (mod Id_MCDC_95_~Id_MCDC_93 4294967296))) (and (not (< (mod |Id_MCDC_95_#in~Id_MCDC_93| 4294967296) 2)) (not (< 2 (mod |Id_MCDC_95_#in~Id_MCDC_93| 4294967296)))))) [2020-07-21 23:37:26,914 INFO L268 CegarLoopResult]: For program point L294-1(line 294) no Hoare annotation was computed. [2020-07-21 23:37:26,914 INFO L268 CegarLoopResult]: For program point L296-3(line 296) no Hoare annotation was computed. [2020-07-21 23:37:26,914 INFO L264 CegarLoopResult]: At program point L288(line 288) the Hoare annotation is: (let ((.cse0 (< 2 (mod Id_MCDC_95_~Id_MCDC_93 4294967296)))) (and (or (and (or (< 2 (mod (+ Id_MCDC_95_~Id_MCDC_93 4294967295) 4294967296)) (< (mod (+ Id_MCDC_95_~Id_MCDC_93 4294967295) 4294967296) 2)) (or .cse0 (< (mod Id_MCDC_95_~Id_MCDC_93 4294967296) 2))) (and (not (< 2 (mod (+ |Id_MCDC_95_#in~Id_MCDC_93| 4294967295) 4294967296))) (not (< (mod (+ |Id_MCDC_95_#in~Id_MCDC_93| 4294967295) 4294967296) 2)))) (or (= 4 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4))) (or .cse0 (and (not (< (mod |Id_MCDC_95_#in~Id_MCDC_93| 4294967296) 2)) (not (< 2 (mod |Id_MCDC_95_#in~Id_MCDC_93| 4294967296))))) (or (= 3 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 3))))) [2020-07-21 23:37:26,914 INFO L268 CegarLoopResult]: For program point L288-1(line 288) no Hoare annotation was computed. [2020-07-21 23:37:26,914 INFO L268 CegarLoopResult]: For program point L286(lines 286 293) no Hoare annotation was computed. [2020-07-21 23:37:26,914 INFO L268 CegarLoopResult]: For program point L286-2(lines 286 293) no Hoare annotation was computed. [2020-07-21 23:37:26,914 INFO L268 CegarLoopResult]: For program point L282(lines 282 285) no Hoare annotation was computed. [2020-07-21 23:37:26,915 INFO L264 CegarLoopResult]: At program point L295(line 295) the Hoare annotation is: (and (or (and (not (< 2 (mod |Id_MCDC_95_#in~Id_MCDC_93| 4294967296))) (not (< (mod |Id_MCDC_95_#in~Id_MCDC_93| 4294967296) 2))) (< 2 (mod Id_MCDC_95_~Id_MCDC_93 4294967296))) (or (= 4 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4))) (or (and (not (< (mod (+ |Id_MCDC_95_#in~Id_MCDC_93| 4294967295) 4294967296) 2)) (not (< 2 (mod (+ |Id_MCDC_95_#in~Id_MCDC_93| 4294967295) 4294967296)))) (< 2 (mod (+ Id_MCDC_95_~Id_MCDC_93 4294967295) 4294967296)) (< (mod (+ Id_MCDC_95_~Id_MCDC_93 4294967295) 4294967296) 2)) (or (= 3 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 3)))) [2020-07-21 23:37:26,915 INFO L268 CegarLoopResult]: For program point L295-1(line 295) no Hoare annotation was computed. [2020-07-21 23:37:26,915 INFO L268 CegarLoopResult]: For program point Id_MCDC_95FINAL(lines 278 297) no Hoare annotation was computed. [2020-07-21 23:37:26,915 INFO L268 CegarLoopResult]: For program point L316(lines 316 321) no Hoare annotation was computed. [2020-07-21 23:37:26,915 INFO L268 CegarLoopResult]: For program point L316-1(lines 314 326) no Hoare annotation was computed. [2020-07-21 23:37:26,915 INFO L268 CegarLoopResult]: For program point L314(line 314) no Hoare annotation was computed. [2020-07-21 23:37:26,915 INFO L268 CegarLoopResult]: For program point L314-2(line 314) no Hoare annotation was computed. [2020-07-21 23:37:26,915 INFO L268 CegarLoopResult]: For program point L314-3(line 314) no Hoare annotation was computed. [2020-07-21 23:37:26,915 INFO L268 CegarLoopResult]: For program point L314-5(lines 314 326) no Hoare annotation was computed. [2020-07-21 23:37:26,915 INFO L268 CegarLoopResult]: For program point L306-1(lines 306 313) no Hoare annotation was computed. [2020-07-21 23:37:26,915 INFO L271 CegarLoopResult]: At program point L306-3(lines 306 313) the Hoare annotation is: true [2020-07-21 23:37:26,915 INFO L268 CegarLoopResult]: For program point L302(lines 302 305) no Hoare annotation was computed. [2020-07-21 23:37:26,916 INFO L268 CegarLoopResult]: For program point L306-4(lines 306 313) no Hoare annotation was computed. [2020-07-21 23:37:26,916 INFO L268 CegarLoopResult]: For program point Id_MCDC_96FINAL(lines 298 328) no Hoare annotation was computed. [2020-07-21 23:37:26,916 INFO L268 CegarLoopResult]: For program point L309(lines 309 312) no Hoare annotation was computed. [2020-07-21 23:37:26,916 INFO L271 CegarLoopResult]: At program point Id_MCDC_96ENTRY(lines 298 328) the Hoare annotation is: true [2020-07-21 23:37:26,916 INFO L268 CegarLoopResult]: For program point Id_MCDC_96EXIT(lines 298 328) no Hoare annotation was computed. [2020-07-21 23:37:26,916 INFO L268 CegarLoopResult]: For program point L253(lines 253 267) no Hoare annotation was computed. [2020-07-21 23:37:26,916 INFO L271 CegarLoopResult]: At program point Id_MCDC_92ENTRY(lines 247 277) the Hoare annotation is: true [2020-07-21 23:37:26,916 INFO L268 CegarLoopResult]: For program point Id_MCDC_92EXIT(lines 247 277) no Hoare annotation was computed. [2020-07-21 23:37:26,916 INFO L268 CegarLoopResult]: For program point Id_MCDC_92FINAL(lines 247 277) no Hoare annotation was computed. [2020-07-21 23:37:26,916 INFO L271 CegarLoopResult]: At program point L270(line 270) the Hoare annotation is: true [2020-07-21 23:37:26,917 INFO L268 CegarLoopResult]: For program point L270-1(line 270) no Hoare annotation was computed. [2020-07-21 23:37:26,917 INFO L268 CegarLoopResult]: For program point L268-1(lines 248 277) no Hoare annotation was computed. [2020-07-21 23:37:26,917 INFO L268 CegarLoopResult]: For program point L268-2(lines 268 275) no Hoare annotation was computed. [2020-07-21 23:37:26,917 INFO L268 CegarLoopResult]: For program point L259(lines 259 267) no Hoare annotation was computed. [2020-07-21 23:37:26,917 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:37:26,917 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:37:26,917 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:37:26,917 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:37:26,917 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 23:37:26,917 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:37:26,917 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:37:26,918 INFO L268 CegarLoopResult]: For program point avoid_zeroEXIT(lines 7 13) no Hoare annotation was computed. [2020-07-21 23:37:26,918 INFO L268 CegarLoopResult]: For program point L9(lines 9 12) no Hoare annotation was computed. [2020-07-21 23:37:26,918 INFO L268 CegarLoopResult]: For program point L9-2(lines 7 13) no Hoare annotation was computed. [2020-07-21 23:37:26,918 INFO L271 CegarLoopResult]: At program point avoid_zeroENTRY(lines 7 13) the Hoare annotation is: true [2020-07-21 23:37:26,918 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 457 464) the Hoare annotation is: true [2020-07-21 23:37:26,918 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 23:37:26,918 INFO L268 CegarLoopResult]: For program point L459(lines 459 462) no Hoare annotation was computed. [2020-07-21 23:37:26,918 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 457 464) no Hoare annotation was computed. [2020-07-21 23:37:26,919 INFO L268 CegarLoopResult]: For program point L459-2(lines 457 464) no Hoare annotation was computed. [2020-07-21 23:37:26,919 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 461) no Hoare annotation was computed. [2020-07-21 23:37:26,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:37:26 BoogieIcfgContainer [2020-07-21 23:37:26,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 23:37:26,940 INFO L168 Benchmark]: Toolchain (without parser) took 14445.06 ms. Allocated memory was 143.1 MB in the beginning and 301.5 MB in the end (delta: 158.3 MB). Free memory was 100.4 MB in the beginning and 87.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 171.2 MB. Max. memory is 7.1 GB. [2020-07-21 23:37:26,941 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 143.1 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 23:37:26,942 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.76 ms. Allocated memory was 143.1 MB in the beginning and 201.9 MB in the end (delta: 58.7 MB). Free memory was 100.2 MB in the beginning and 171.9 MB in the end (delta: -71.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-07-21 23:37:26,943 INFO L168 Benchmark]: Boogie Preprocessor took 106.33 ms. Allocated memory is still 201.9 MB. Free memory was 171.9 MB in the beginning and 167.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-07-21 23:37:26,943 INFO L168 Benchmark]: RCFGBuilder took 1181.77 ms. Allocated memory is still 201.9 MB. Free memory was 167.6 MB in the beginning and 104.5 MB in the end (delta: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2020-07-21 23:37:26,944 INFO L168 Benchmark]: TraceAbstraction took 12437.00 ms. Allocated memory was 201.9 MB in the beginning and 301.5 MB in the end (delta: 99.6 MB). Free memory was 104.5 MB in the beginning and 87.5 MB in the end (delta: 17.0 MB). Peak memory consumption was 116.6 MB. Max. memory is 7.1 GB. [2020-07-21 23:37:26,948 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 143.1 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 711.76 ms. Allocated memory was 143.1 MB in the beginning and 201.9 MB in the end (delta: 58.7 MB). Free memory was 100.2 MB in the beginning and 171.9 MB in the end (delta: -71.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.33 ms. Allocated memory is still 201.9 MB. Free memory was 171.9 MB in the beginning and 167.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1181.77 ms. Allocated memory is still 201.9 MB. Free memory was 167.6 MB in the beginning and 104.5 MB in the end (delta: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12437.00 ms. Allocated memory was 201.9 MB in the beginning and 301.5 MB in the end (delta: 99.6 MB). Free memory was 104.5 MB in the beginning and 87.5 MB in the end (delta: 17.0 MB). Peak memory consumption was 116.6 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, 133 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.9s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1614 SDtfs, 350 SDslu, 3418 SDs, 0 SdLazy, 333 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 732 GetRequests, 692 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 148 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 238 PreInvPairs, 279 NumberOfFragments, 324 HoareAnnotationTreeSize, 238 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 34 FomulaSimplificationsInter, 416 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 5.5s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 546 NumberOfCodeBlocks, 376 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 717 ConstructedInterpolants, 0 QuantifiedInterpolants, 57355 SizeOfPredicates, 15 NumberOfNonLiveVariables, 5208 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 271/281 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...