/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 NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 14:30:11,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 14:30:11,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 14:30:11,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 14:30:11,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 14:30:11,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 14:30:11,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 14:30:11,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 14:30:11,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 14:30:11,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 14:30:11,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 14:30:11,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 14:30:11,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 14:30:11,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 14:30:11,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 14:30:11,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 14:30:11,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 14:30:11,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 14:30:11,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 14:30:11,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 14:30:11,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 14:30:11,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 14:30:11,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 14:30:11,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 14:30:11,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 14:30:11,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 14:30:11,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 14:30:11,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 14:30:11,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 14:30:11,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-21 14:30:11,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 14:30:11,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 14:30:11,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 14:30:11,689 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 14:30:11,706 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 14:30:11,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 14:30:11,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 14:30:11,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 14:30:11,708 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 14:30:11,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 14:30:11,709 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 14:30:11,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 14:30:11,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 14:30:11,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 14:30:11,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 14:30:11,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 14:30:11,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 14:30:11,710 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 14:30:11,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 14:30:11,711 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 14:30:11,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 14:30:11,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 14:30:11,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 14:30:11,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 14:30:11,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 14:30:11,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 14:30:11,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 14:30:11,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 14:30:11,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 14:30:11,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 14:30:11,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:11,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 14:30:11,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 14:30:11,713 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 -> NUM_FUNCTIONS 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 -> 2 [2020-07-21 14:30:12,019 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 14:30:12,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 14:30:12,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 14:30:12,044 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 14:30:12,045 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 14:30:12,046 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c [2020-07-21 14:30:12,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cf720f83/24d106c920e049619df36b5bc4d54692/FLAG1fe4c5440 [2020-07-21 14:30:12,784 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 14:30:12,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_3.c [2020-07-21 14:30:12,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cf720f83/24d106c920e049619df36b5bc4d54692/FLAG1fe4c5440 [2020-07-21 14:30:13,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cf720f83/24d106c920e049619df36b5bc4d54692 [2020-07-21 14:30:13,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 14:30:13,058 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 14:30:13,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 14:30:13,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 14:30:13,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 14:30:13,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:30:13" (1/1) ... [2020-07-21 14:30:13,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@246c3d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:13, skipping insertion in model container [2020-07-21 14:30:13,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:30:13" (1/1) ... [2020-07-21 14:30:13,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 14:30:13,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 14:30:13,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:30:13,585 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 14:30:13,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:30:13,705 INFO L208 MainTranslator]: Completed translation [2020-07-21 14:30:13,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:13 WrapperNode [2020-07-21 14:30:13,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 14:30:13,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 14:30:13,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 14:30:13,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 14:30:13,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:13" (1/1) ... [2020-07-21 14:30:13,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:13" (1/1) ... [2020-07-21 14:30:13,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:13" (1/1) ... [2020-07-21 14:30:13,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:13" (1/1) ... [2020-07-21 14:30:13,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:13" (1/1) ... [2020-07-21 14:30:13,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:13" (1/1) ... [2020-07-21 14:30:13,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:13" (1/1) ... [2020-07-21 14:30:13,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 14:30:13,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 14:30:13,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 14:30:13,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 14:30:13,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:13" (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 14:30:13,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 14:30:13,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 14:30:13,908 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 14:30:13,908 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-07-21 14:30:13,909 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2020-07-21 14:30:13,909 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2020-07-21 14:30:13,910 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2020-07-21 14:30:13,910 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2020-07-21 14:30:13,910 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2020-07-21 14:30:13,910 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2020-07-21 14:30:13,911 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2020-07-21 14:30:13,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 14:30:13,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 14:30:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 14:30:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 14:30:13,914 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 14:30:13,914 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-07-21 14:30:13,914 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-21 14:30:13,914 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-07-21 14:30:13,915 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2020-07-21 14:30:13,915 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2020-07-21 14:30:13,915 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2020-07-21 14:30:13,915 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2020-07-21 14:30:13,916 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 14:30:13,916 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2020-07-21 14:30:13,917 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2020-07-21 14:30:13,917 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-21 14:30:13,917 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 14:30:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 14:30:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 14:30:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 14:30:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 14:30:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 14:30:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 14:30:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 14:30:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 14:30:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 14:30:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 14:30:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-21 14:30:13,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 14:30:15,607 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 14:30:15,607 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-21 14:30:15,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:30:15 BoogieIcfgContainer [2020-07-21 14:30:15,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 14:30:15,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 14:30:15,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 14:30:15,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 14:30:15,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:30:13" (1/3) ... [2020-07-21 14:30:15,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d44b23f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:30:15, skipping insertion in model container [2020-07-21 14:30:15,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:13" (2/3) ... [2020-07-21 14:30:15,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d44b23f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:30:15, skipping insertion in model container [2020-07-21 14:30:15,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:30:15" (3/3) ... [2020-07-21 14:30:15,633 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_3.c [2020-07-21 14:30:15,645 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 14:30:15,655 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 14:30:15,670 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 14:30:15,699 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 14:30:15,700 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 14:30:15,700 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 14:30:15,700 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 14:30:15,700 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 14:30:15,701 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 14:30:15,701 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 14:30:15,701 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 14:30:15,727 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-07-21 14:30:15,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-21 14:30:15,739 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:30:15,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:30:15,742 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:30:15,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:30:15,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1652927245, now seen corresponding path program 1 times [2020-07-21 14:30:15,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:30:15,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692671610] [2020-07-21 14:30:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:30:16,050 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:30:16,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:30:16,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 14:30:16,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:30:16,117 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 14:30:16,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:30:16,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692671610] [2020-07-21 14:30:16,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:30:16,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:30:16,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325533466] [2020-07-21 14:30:16,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:30:16,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:30:16,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:30:16,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:30:16,152 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2020-07-21 14:30:16,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:30:16,264 INFO L93 Difference]: Finished difference Result 262 states and 403 transitions. [2020-07-21 14:30:16,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:30:16,267 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-07-21 14:30:16,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:30:16,288 INFO L225 Difference]: With dead ends: 262 [2020-07-21 14:30:16,288 INFO L226 Difference]: Without dead ends: 140 [2020-07-21 14:30:16,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:30:16,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-07-21 14:30:16,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 120. [2020-07-21 14:30:16,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-21 14:30:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 166 transitions. [2020-07-21 14:30:16,389 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 166 transitions. Word has length 39 [2020-07-21 14:30:16,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:30:16,390 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 166 transitions. [2020-07-21 14:30:16,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:30:16,391 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 166 transitions. [2020-07-21 14:30:16,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-21 14:30:16,396 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:30:16,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:30:16,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:16,610 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:30:16,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:30:16,611 INFO L82 PathProgramCache]: Analyzing trace with hash -296822387, now seen corresponding path program 1 times [2020-07-21 14:30:16,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:30:16,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891263103] [2020-07-21 14:30:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:30:16,767 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:30:16,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:30:16,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 14:30:16,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:30:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 14:30:16,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:30:16,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891263103] [2020-07-21 14:30:16,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:30:16,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:30:16,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181752254] [2020-07-21 14:30:16,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:30:16,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:30:16,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:30:16,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:30:16,796 INFO L87 Difference]: Start difference. First operand 120 states and 166 transitions. Second operand 3 states. [2020-07-21 14:30:16,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:30:16,833 INFO L93 Difference]: Finished difference Result 170 states and 230 transitions. [2020-07-21 14:30:16,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:30:16,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-07-21 14:30:16,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:30:16,837 INFO L225 Difference]: With dead ends: 170 [2020-07-21 14:30:16,837 INFO L226 Difference]: Without dead ends: 128 [2020-07-21 14:30:16,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:30:16,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-07-21 14:30:16,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 120. [2020-07-21 14:30:16,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-21 14:30:16,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 165 transitions. [2020-07-21 14:30:16,856 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 165 transitions. Word has length 41 [2020-07-21 14:30:16,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:30:16,857 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 165 transitions. [2020-07-21 14:30:16,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:30:16,857 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 165 transitions. [2020-07-21 14:30:16,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 14:30:16,860 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:30:16,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:30:17,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:17,076 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:30:17,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:30:17,077 INFO L82 PathProgramCache]: Analyzing trace with hash -469545370, now seen corresponding path program 1 times [2020-07-21 14:30:17,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:30:17,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999436717] [2020-07-21 14:30:17,078 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:30:17,253 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:30:17,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:30:17,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 14:30:17,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:30:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 14:30:17,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:30:17,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999436717] [2020-07-21 14:30:17,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:30:17,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:30:17,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152009670] [2020-07-21 14:30:17,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:30:17,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:30:17,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:30:17,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:30:17,302 INFO L87 Difference]: Start difference. First operand 120 states and 165 transitions. Second operand 3 states. [2020-07-21 14:30:17,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:30:17,354 INFO L93 Difference]: Finished difference Result 180 states and 246 transitions. [2020-07-21 14:30:17,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:30:17,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-07-21 14:30:17,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:30:17,358 INFO L225 Difference]: With dead ends: 180 [2020-07-21 14:30:17,359 INFO L226 Difference]: Without dead ends: 138 [2020-07-21 14:30:17,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:30:17,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-07-21 14:30:17,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 121. [2020-07-21 14:30:17,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-21 14:30:17,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 166 transitions. [2020-07-21 14:30:17,373 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 166 transitions. Word has length 42 [2020-07-21 14:30:17,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:30:17,374 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 166 transitions. [2020-07-21 14:30:17,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:30:17,374 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 166 transitions. [2020-07-21 14:30:17,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 14:30:17,377 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:30:17,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:30:17,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:17,592 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:30:17,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:30:17,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1206740640, now seen corresponding path program 1 times [2020-07-21 14:30:17,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:30:17,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304106023] [2020-07-21 14:30:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:30:17,768 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:30:17,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:30:17,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 14:30:17,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:30:17,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 14:30:17,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:30:17,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304106023] [2020-07-21 14:30:17,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:30:17,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 14:30:17,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964167384] [2020-07-21 14:30:17,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 14:30:17,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:30:17,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 14:30:17,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 14:30:17,811 INFO L87 Difference]: Start difference. First operand 121 states and 166 transitions. Second operand 4 states. [2020-07-21 14:30:17,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:30:17,874 INFO L93 Difference]: Finished difference Result 161 states and 213 transitions. [2020-07-21 14:30:17,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 14:30:17,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-07-21 14:30:17,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:30:17,877 INFO L225 Difference]: With dead ends: 161 [2020-07-21 14:30:17,877 INFO L226 Difference]: Without dead ends: 128 [2020-07-21 14:30:17,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 14:30:17,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-07-21 14:30:17,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-07-21 14:30:17,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-21 14:30:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 174 transitions. [2020-07-21 14:30:17,890 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 174 transitions. Word has length 47 [2020-07-21 14:30:17,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:30:17,890 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 174 transitions. [2020-07-21 14:30:17,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 14:30:17,890 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 174 transitions. [2020-07-21 14:30:17,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-21 14:30:17,893 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:30:17,893 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:30:18,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:18,108 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:30:18,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:30:18,109 INFO L82 PathProgramCache]: Analyzing trace with hash -367196113, now seen corresponding path program 1 times [2020-07-21 14:30:18,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:30:18,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285071748] [2020-07-21 14:30:18,111 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:30:18,264 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:30:18,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:30:18,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 14:30:18,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:30:18,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 14:30:18,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:30:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 14:30:18,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285071748] [2020-07-21 14:30:18,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:30:18,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-07-21 14:30:18,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830067553] [2020-07-21 14:30:18,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 14:30:18,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:30:18,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 14:30:18,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-21 14:30:18,455 INFO L87 Difference]: Start difference. First operand 128 states and 174 transitions. Second operand 9 states. [2020-07-21 14:30:18,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:30:18,704 INFO L93 Difference]: Finished difference Result 176 states and 231 transitions. [2020-07-21 14:30:18,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 14:30:18,705 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-07-21 14:30:18,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:30:18,707 INFO L225 Difference]: With dead ends: 176 [2020-07-21 14:30:18,707 INFO L226 Difference]: Without dead ends: 142 [2020-07-21 14:30:18,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 96 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-07-21 14:30:18,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-07-21 14:30:18,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-07-21 14:30:18,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-07-21 14:30:18,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 190 transitions. [2020-07-21 14:30:18,721 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 190 transitions. Word has length 53 [2020-07-21 14:30:18,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:30:18,722 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 190 transitions. [2020-07-21 14:30:18,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 14:30:18,722 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 190 transitions. [2020-07-21 14:30:18,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-21 14:30:18,724 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:30:18,724 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:30:18,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:18,938 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:30:18,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:30:18,939 INFO L82 PathProgramCache]: Analyzing trace with hash -119201668, now seen corresponding path program 1 times [2020-07-21 14:30:18,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:30:18,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651658971] [2020-07-21 14:30:18,940 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 14:30:19,140 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:30:19,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:30:19,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 14:30:19,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:30:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-21 14:30:19,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:30:19,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651658971] [2020-07-21 14:30:19,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:30:19,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 14:30:19,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919066284] [2020-07-21 14:30:19,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 14:30:19,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:30:19,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 14:30:19,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 14:30:19,205 INFO L87 Difference]: Start difference. First operand 142 states and 190 transitions. Second operand 4 states. [2020-07-21 14:30:19,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:30:19,224 INFO L93 Difference]: Finished difference Result 142 states and 190 transitions. [2020-07-21 14:30:19,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 14:30:19,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-07-21 14:30:19,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:30:19,225 INFO L225 Difference]: With dead ends: 142 [2020-07-21 14:30:19,225 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 14:30:19,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 14:30:19,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 14:30:19,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 14:30:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 14:30:19,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 14:30:19,228 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-07-21 14:30:19,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:30:19,228 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 14:30:19,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 14:30:19,228 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 14:30:19,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 14:30:19,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:19,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 14:30:19,705 INFO L268 CegarLoopResult]: For program point Id_MCDC_100FINAL(lines 418 424) no Hoare annotation was computed. [2020-07-21 14:30:19,705 INFO L268 CegarLoopResult]: For program point Id_MCDC_100EXIT(lines 418 424) no Hoare annotation was computed. [2020-07-21 14:30:19,706 INFO L271 CegarLoopResult]: At program point Id_MCDC_100ENTRY(lines 418 424) the Hoare annotation is: true [2020-07-21 14:30:19,706 INFO L271 CegarLoopResult]: At program point L422(line 422) the Hoare annotation is: true [2020-07-21 14:30:19,706 INFO L268 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-07-21 14:30:19,706 INFO L271 CegarLoopResult]: At program point L403(line 403) the Hoare annotation is: true [2020-07-21 14:30:19,706 INFO L268 CegarLoopResult]: For program point L403-1(line 403) no Hoare annotation was computed. [2020-07-21 14:30:19,706 INFO L271 CegarLoopResult]: At program point Id_MCDC_99ENTRY(lines 398 417) the Hoare annotation is: true [2020-07-21 14:30:19,706 INFO L268 CegarLoopResult]: For program point Id_MCDC_99EXIT(lines 398 417) no Hoare annotation was computed. [2020-07-21 14:30:19,707 INFO L268 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-07-21 14:30:19,707 INFO L268 CegarLoopResult]: For program point L406-2(lines 406 413) no Hoare annotation was computed. [2020-07-21 14:30:19,707 INFO L268 CegarLoopResult]: For program point L404-2(lines 404 414) no Hoare annotation was computed. [2020-07-21 14:30:19,707 INFO L271 CegarLoopResult]: At program point L404-3(lines 404 414) the Hoare annotation is: true [2020-07-21 14:30:19,707 INFO L271 CegarLoopResult]: At program point L404-4(lines 404 414) the Hoare annotation is: true [2020-07-21 14:30:19,707 INFO L268 CegarLoopResult]: For program point Id_MCDC_99FINAL(lines 398 417) no Hoare annotation was computed. [2020-07-21 14:30:19,707 INFO L268 CegarLoopResult]: For program point L221(line 221) no Hoare annotation was computed. [2020-07-21 14:30:19,708 INFO L268 CegarLoopResult]: For program point L213(line 213) no Hoare annotation was computed. [2020-07-21 14:30:19,708 INFO L268 CegarLoopResult]: For program point L209(line 209) no Hoare annotation was computed. [2020-07-21 14:30:19,708 INFO L268 CegarLoopResult]: For program point L209-2(line 209) no Hoare annotation was computed. [2020-07-21 14:30:19,708 INFO L271 CegarLoopResult]: At program point Id_MCDC_89ENTRY(lines 191 246) the Hoare annotation is: true [2020-07-21 14:30:19,708 INFO L268 CegarLoopResult]: For program point Id_MCDC_89EXIT(lines 191 246) no Hoare annotation was computed. [2020-07-21 14:30:19,708 INFO L268 CegarLoopResult]: For program point L234(lines 234 239) no Hoare annotation was computed. [2020-07-21 14:30:19,708 INFO L268 CegarLoopResult]: For program point L234-1(lines 232 244) no Hoare annotation was computed. [2020-07-21 14:30:19,709 INFO L268 CegarLoopResult]: For program point L218(line 218) no Hoare annotation was computed. [2020-07-21 14:30:19,709 INFO L268 CegarLoopResult]: For program point L218-2(line 218) no Hoare annotation was computed. [2020-07-21 14:30:19,709 INFO L268 CegarLoopResult]: For program point L210(line 210) no Hoare annotation was computed. [2020-07-21 14:30:19,709 INFO L268 CegarLoopResult]: For program point L202(lines 202 205) no Hoare annotation was computed. [2020-07-21 14:30:19,709 INFO L268 CegarLoopResult]: For program point Id_MCDC_89FINAL(lines 191 246) no Hoare annotation was computed. [2020-07-21 14:30:19,709 INFO L268 CegarLoopResult]: For program point L227(lines 227 230) no Hoare annotation was computed. [2020-07-21 14:30:19,709 INFO L268 CegarLoopResult]: For program point L219(line 219) no Hoare annotation was computed. [2020-07-21 14:30:19,709 INFO L268 CegarLoopResult]: For program point L215(line 215) no Hoare annotation was computed. [2020-07-21 14:30:19,710 INFO L268 CegarLoopResult]: For program point L215-2(line 215) no Hoare annotation was computed. [2020-07-21 14:30:19,710 INFO L271 CegarLoopResult]: At program point L207(lines 207 223) the Hoare annotation is: true [2020-07-21 14:30:19,710 INFO L268 CegarLoopResult]: For program point L232(line 232) no Hoare annotation was computed. [2020-07-21 14:30:19,710 INFO L268 CegarLoopResult]: For program point L232-2(line 232) no Hoare annotation was computed. [2020-07-21 14:30:19,710 INFO L268 CegarLoopResult]: For program point L232-3(line 232) no Hoare annotation was computed. [2020-07-21 14:30:19,710 INFO L268 CegarLoopResult]: For program point L232-5(lines 232 244) no Hoare annotation was computed. [2020-07-21 14:30:19,710 INFO L268 CegarLoopResult]: For program point L224-1(lines 224 231) no Hoare annotation was computed. [2020-07-21 14:30:19,711 INFO L271 CegarLoopResult]: At program point L224-3(lines 224 231) the Hoare annotation is: true [2020-07-21 14:30:19,711 INFO L268 CegarLoopResult]: For program point L224-4(lines 224 231) no Hoare annotation was computed. [2020-07-21 14:30:19,711 INFO L268 CegarLoopResult]: For program point L216(line 216) no Hoare annotation was computed. [2020-07-21 14:30:19,711 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-07-21 14:30:19,711 INFO L268 CegarLoopResult]: For program point L212-2(line 212) no Hoare annotation was computed. [2020-07-21 14:30:19,711 INFO L268 CegarLoopResult]: For program point L200(lines 200 206) no Hoare annotation was computed. [2020-07-21 14:30:19,711 INFO L268 CegarLoopResult]: For program point L200-2(lines 200 206) no Hoare annotation was computed. [2020-07-21 14:30:19,712 INFO L268 CegarLoopResult]: For program point L196(lines 196 199) no Hoare annotation was computed. [2020-07-21 14:30:19,712 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 425 456) the Hoare annotation is: true [2020-07-21 14:30:19,712 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 425 456) no Hoare annotation was computed. [2020-07-21 14:30:19,712 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 425 456) no Hoare annotation was computed. [2020-07-21 14:30:19,712 INFO L271 CegarLoopResult]: At program point L455(line 455) the Hoare annotation is: true [2020-07-21 14:30:19,712 INFO L268 CegarLoopResult]: For program point L450(lines 450 453) no Hoare annotation was computed. [2020-07-21 14:30:19,713 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-21 14:30:19,713 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 14:30:19,713 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-21 14:30:19,713 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-21 14:30:19,713 INFO L268 CegarLoopResult]: For program point L386-1(line 386) no Hoare annotation was computed. [2020-07-21 14:30:19,713 INFO L268 CegarLoopResult]: For program point L374-2(lines 374 391) no Hoare annotation was computed. [2020-07-21 14:30:19,713 INFO L271 CegarLoopResult]: At program point L374-3(lines 374 391) the Hoare annotation is: true [2020-07-21 14:30:19,713 INFO L268 CegarLoopResult]: For program point L374-4(lines 374 391) no Hoare annotation was computed. [2020-07-21 14:30:19,714 INFO L271 CegarLoopResult]: At program point Id_MCDC_97ENTRY(lines 329 397) the Hoare annotation is: true [2020-07-21 14:30:19,714 INFO L268 CegarLoopResult]: For program point Id_MCDC_97EXIT(lines 329 397) no Hoare annotation was computed. [2020-07-21 14:30:19,714 INFO L268 CegarLoopResult]: For program point L387(lines 387 390) no Hoare annotation was computed. [2020-07-21 14:30:19,714 INFO L268 CegarLoopResult]: For program point L354(lines 354 395) no Hoare annotation was computed. [2020-07-21 14:30:19,714 INFO L268 CegarLoopResult]: For program point L350-2(lines 350 353) no Hoare annotation was computed. [2020-07-21 14:30:19,714 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 14:30:19,715 INFO L268 CegarLoopResult]: For program point L350-4(lines 330 397) no Hoare annotation was computed. [2020-07-21 14:30:19,715 INFO L271 CegarLoopResult]: At program point L363(line 363) the Hoare annotation is: true [2020-07-21 14:30:19,715 INFO L268 CegarLoopResult]: For program point L363-1(lines 363 366) no Hoare annotation was computed. [2020-07-21 14:30:19,715 INFO L268 CegarLoopResult]: For program point Id_MCDC_97FINAL(lines 329 397) no Hoare annotation was computed. [2020-07-21 14:30:19,715 INFO L271 CegarLoopResult]: At program point L359(line 359) the Hoare annotation is: true [2020-07-21 14:30:19,715 INFO L268 CegarLoopResult]: For program point L359-1(lines 359 362) no Hoare annotation was computed. [2020-07-21 14:30:19,715 INFO L271 CegarLoopResult]: At program point L376(line 376) the Hoare annotation is: true [2020-07-21 14:30:19,716 INFO L268 CegarLoopResult]: For program point L376-1(lines 376 379) no Hoare annotation was computed. [2020-07-21 14:30:19,716 INFO L268 CegarLoopResult]: For program point L356-2(lines 356 394) no Hoare annotation was computed. [2020-07-21 14:30:19,716 INFO L271 CegarLoopResult]: At program point L356-3(lines 356 394) the Hoare annotation is: true [2020-07-21 14:30:19,716 INFO L271 CegarLoopResult]: At program point L369(line 369) the Hoare annotation is: true [2020-07-21 14:30:19,716 INFO L268 CegarLoopResult]: For program point L369-1(lines 369 372) no Hoare annotation was computed. [2020-07-21 14:30:19,716 INFO L271 CegarLoopResult]: At program point L386(line 386) the Hoare annotation is: true [2020-07-21 14:30:19,716 INFO L264 CegarLoopResult]: At program point L288(line 288) the Hoare annotation is: (= |Id_MCDC_95_#in~Id_MCDC_93| Id_MCDC_95_~Id_MCDC_93) [2020-07-21 14:30:19,717 INFO L268 CegarLoopResult]: For program point L288-1(line 288) no Hoare annotation was computed. [2020-07-21 14:30:19,717 INFO L268 CegarLoopResult]: For program point L286(lines 286 293) no Hoare annotation was computed. [2020-07-21 14:30:19,717 INFO L268 CegarLoopResult]: For program point L286-2(lines 286 293) no Hoare annotation was computed. [2020-07-21 14:30:19,717 INFO L268 CegarLoopResult]: For program point L282(lines 282 285) no Hoare annotation was computed. [2020-07-21 14:30:19,717 INFO L271 CegarLoopResult]: At program point Id_MCDC_95ENTRY(lines 278 297) the Hoare annotation is: true [2020-07-21 14:30:19,717 INFO L268 CegarLoopResult]: For program point Id_MCDC_95EXIT(lines 278 297) no Hoare annotation was computed. [2020-07-21 14:30:19,718 INFO L264 CegarLoopResult]: At program point L295(line 295) the Hoare annotation is: (= |Id_MCDC_95_#in~Id_MCDC_93| Id_MCDC_95_~Id_MCDC_93) [2020-07-21 14:30:19,718 INFO L264 CegarLoopResult]: At program point L294(line 294) the Hoare annotation is: (= |Id_MCDC_95_#in~Id_MCDC_93| Id_MCDC_95_~Id_MCDC_93) [2020-07-21 14:30:19,718 INFO L268 CegarLoopResult]: For program point L295-1(line 295) no Hoare annotation was computed. [2020-07-21 14:30:19,718 INFO L268 CegarLoopResult]: For program point L294-1(line 294) no Hoare annotation was computed. [2020-07-21 14:30:19,718 INFO L268 CegarLoopResult]: For program point Id_MCDC_95FINAL(lines 278 297) no Hoare annotation was computed. [2020-07-21 14:30:19,718 INFO L268 CegarLoopResult]: For program point L316(lines 316 321) no Hoare annotation was computed. [2020-07-21 14:30:19,719 INFO L268 CegarLoopResult]: For program point L316-1(lines 314 326) no Hoare annotation was computed. [2020-07-21 14:30:19,719 INFO L268 CegarLoopResult]: For program point L314(line 314) no Hoare annotation was computed. [2020-07-21 14:30:19,719 INFO L268 CegarLoopResult]: For program point L314-2(line 314) no Hoare annotation was computed. [2020-07-21 14:30:19,719 INFO L268 CegarLoopResult]: For program point L314-3(line 314) no Hoare annotation was computed. [2020-07-21 14:30:19,719 INFO L268 CegarLoopResult]: For program point L314-5(lines 314 326) no Hoare annotation was computed. [2020-07-21 14:30:19,719 INFO L268 CegarLoopResult]: For program point L306-1(lines 306 313) no Hoare annotation was computed. [2020-07-21 14:30:19,720 INFO L271 CegarLoopResult]: At program point L306-3(lines 306 313) the Hoare annotation is: true [2020-07-21 14:30:19,720 INFO L268 CegarLoopResult]: For program point L302(lines 302 305) no Hoare annotation was computed. [2020-07-21 14:30:19,720 INFO L268 CegarLoopResult]: For program point L306-4(lines 306 313) no Hoare annotation was computed. [2020-07-21 14:30:19,720 INFO L268 CegarLoopResult]: For program point Id_MCDC_96FINAL(lines 298 328) no Hoare annotation was computed. [2020-07-21 14:30:19,720 INFO L268 CegarLoopResult]: For program point L309(lines 309 312) no Hoare annotation was computed. [2020-07-21 14:30:19,720 INFO L271 CegarLoopResult]: At program point Id_MCDC_96ENTRY(lines 298 328) the Hoare annotation is: true [2020-07-21 14:30:19,720 INFO L268 CegarLoopResult]: For program point Id_MCDC_96EXIT(lines 298 328) no Hoare annotation was computed. [2020-07-21 14:30:19,720 INFO L268 CegarLoopResult]: For program point Id_MCDC_92EXIT(lines 247 277) no Hoare annotation was computed. [2020-07-21 14:30:19,721 INFO L268 CegarLoopResult]: For program point Id_MCDC_92FINAL(lines 247 277) no Hoare annotation was computed. [2020-07-21 14:30:19,721 INFO L268 CegarLoopResult]: For program point L259(lines 259 267) no Hoare annotation was computed. [2020-07-21 14:30:19,721 INFO L268 CegarLoopResult]: For program point L253(lines 253 267) no Hoare annotation was computed. [2020-07-21 14:30:19,721 INFO L271 CegarLoopResult]: At program point Id_MCDC_92ENTRY(lines 247 277) the Hoare annotation is: true [2020-07-21 14:30:19,721 INFO L271 CegarLoopResult]: At program point L272(line 272) the Hoare annotation is: true [2020-07-21 14:30:19,721 INFO L268 CegarLoopResult]: For program point L272-1(line 272) no Hoare annotation was computed. [2020-07-21 14:30:19,721 INFO L271 CegarLoopResult]: At program point L270(line 270) the Hoare annotation is: true [2020-07-21 14:30:19,722 INFO L268 CegarLoopResult]: For program point L270-1(line 270) no Hoare annotation was computed. [2020-07-21 14:30:19,722 INFO L268 CegarLoopResult]: For program point L268-1(lines 248 277) no Hoare annotation was computed. [2020-07-21 14:30:19,722 INFO L268 CegarLoopResult]: For program point L268-2(lines 268 275) no Hoare annotation was computed. [2020-07-21 14:30:19,722 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 14:30:19,722 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 14:30:19,722 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 14:30:19,722 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 14:30:19,722 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 14:30:19,723 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 14:30:19,723 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 14:30:19,723 INFO L268 CegarLoopResult]: For program point avoid_zeroEXIT(lines 7 13) no Hoare annotation was computed. [2020-07-21 14:30:19,723 INFO L268 CegarLoopResult]: For program point L9(lines 9 12) no Hoare annotation was computed. [2020-07-21 14:30:19,723 INFO L268 CegarLoopResult]: For program point L9-2(lines 7 13) no Hoare annotation was computed. [2020-07-21 14:30:19,723 INFO L271 CegarLoopResult]: At program point avoid_zeroENTRY(lines 7 13) the Hoare annotation is: true [2020-07-21 14:30:19,723 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 457 464) the Hoare annotation is: true [2020-07-21 14:30:19,724 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 14:30:19,724 INFO L268 CegarLoopResult]: For program point L459(lines 459 462) no Hoare annotation was computed. [2020-07-21 14:30:19,724 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 457 464) no Hoare annotation was computed. [2020-07-21 14:30:19,724 INFO L268 CegarLoopResult]: For program point L459-2(lines 457 464) no Hoare annotation was computed. [2020-07-21 14:30:19,724 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 461) no Hoare annotation was computed. [2020-07-21 14:30:19,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:30:19 BoogieIcfgContainer [2020-07-21 14:30:19,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 14:30:19,752 INFO L168 Benchmark]: Toolchain (without parser) took 6694.79 ms. Allocated memory was 137.9 MB in the beginning and 248.5 MB in the end (delta: 110.6 MB). Free memory was 101.6 MB in the beginning and 116.6 MB in the end (delta: -14.9 MB). Peak memory consumption was 95.7 MB. Max. memory is 7.1 GB. [2020-07-21 14:30:19,753 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 137.9 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 14:30:19,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.99 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 101.2 MB in the beginning and 172.6 MB in the end (delta: -71.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-07-21 14:30:19,756 INFO L168 Benchmark]: Boogie Preprocessor took 99.62 ms. Allocated memory is still 202.4 MB. Free memory was 172.6 MB in the beginning and 168.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-07-21 14:30:19,757 INFO L168 Benchmark]: RCFGBuilder took 1811.05 ms. Allocated memory is still 202.4 MB. Free memory was 168.6 MB in the beginning and 106.2 MB in the end (delta: 62.4 MB). Peak memory consumption was 62.4 MB. Max. memory is 7.1 GB. [2020-07-21 14:30:19,762 INFO L168 Benchmark]: TraceAbstraction took 4129.35 ms. Allocated memory was 202.4 MB in the beginning and 248.5 MB in the end (delta: 46.1 MB). Free memory was 106.2 MB in the beginning and 116.6 MB in the end (delta: -10.4 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2020-07-21 14:30:19,775 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 137.9 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 647.99 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 101.2 MB in the beginning and 172.6 MB in the end (delta: -71.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.62 ms. Allocated memory is still 202.4 MB. Free memory was 172.6 MB in the beginning and 168.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1811.05 ms. Allocated memory is still 202.4 MB. Free memory was 168.6 MB in the beginning and 106.2 MB in the end (delta: 62.4 MB). Peak memory consumption was 62.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4129.35 ms. Allocated memory was 202.4 MB in the beginning and 248.5 MB in the end (delta: 46.1 MB). Free memory was 106.2 MB in the beginning and 116.6 MB in the end (delta: -10.4 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 461]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 207]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 224]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 404]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 374]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 350]: Loop Invariant Derived loop invariant: 6144 == Id_MCDC_123 - InvariantResult [Line: 306]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 356]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 132 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1017 SDtfs, 106 SDslu, 2073 SDs, 0 SdLazy, 103 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 330 GetRequests, 308 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 45 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 135 PreInvPairs, 163 NumberOfFragments, 42 HoareAnnotationTreeSize, 135 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 34 FomulaSimplificationsInter, 87 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 277 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 19255 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2378 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 16/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...