/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 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 [2020-07-20 14:48:37,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:48:37,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:48:37,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:48:37,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:48:37,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:48:37,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:48:37,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:48:37,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:48:37,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:48:37,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:48:37,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:48:37,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:48:37,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:48:37,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:48:37,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:48:37,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:48:37,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:48:37,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:48:37,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:48:37,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:48:37,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:48:37,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:48:37,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:48:37,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:48:37,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:48:37,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:48:37,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:48:37,541 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 14:48:37,577 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:48:37,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:48:37,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:48:37,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:48:37,585 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:48:37,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:48:37,585 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:48:37,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:48:37,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:48:37,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:48:37,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:48:37,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:48:37,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:48:37,588 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:48:37,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:48:37,588 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:48:37,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:48:37,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:48:37,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:48:37,590 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:48:37,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:48:37,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:48:37,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:48:37,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:48:37,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:48:37,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:48:37,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:48:37,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:48:37,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:48:37,592 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 -> 4 [2020-07-20 14:48:37,920 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:48:37,936 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:48:37,940 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:48:37,942 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:48:37,942 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:48:37,944 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c [2020-07-20 14:48:38,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6760c32a4/c24f942aeb2747038b0929ea2bc9d4ec/FLAGeb8b89973 [2020-07-20 14:48:38,672 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:48:38,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c [2020-07-20 14:48:38,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6760c32a4/c24f942aeb2747038b0929ea2bc9d4ec/FLAGeb8b89973 [2020-07-20 14:48:38,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6760c32a4/c24f942aeb2747038b0929ea2bc9d4ec [2020-07-20 14:48:38,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:48:38,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:48:38,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:48:38,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:48:38,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:48:38,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:48:38" (1/1) ... [2020-07-20 14:48:38,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38342db0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:48:38, skipping insertion in model container [2020-07-20 14:48:38,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:48:38" (1/1) ... [2020-07-20 14:48:38,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:48:39,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:48:39,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:48:39,478 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:48:39,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:48:39,578 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:48:39,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:48:39 WrapperNode [2020-07-20 14:48:39,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:48:39,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:48:39,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:48:39,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:48:39,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:48:39" (1/1) ... [2020-07-20 14:48:39,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:48:39" (1/1) ... [2020-07-20 14:48:39,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:48:39" (1/1) ... [2020-07-20 14:48:39,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:48:39" (1/1) ... [2020-07-20 14:48:39,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:48:39" (1/1) ... [2020-07-20 14:48:39,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:48:39" (1/1) ... [2020-07-20 14:48:39,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:48:39" (1/1) ... [2020-07-20 14:48:39,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:48:39,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:48:39,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:48:39,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:48:39,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:48:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:48:39,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:48:39,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:48:39,754 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 14:48:39,754 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-07-20 14:48:39,755 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2020-07-20 14:48:39,755 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2020-07-20 14:48:39,756 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2020-07-20 14:48:39,756 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2020-07-20 14:48:39,756 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2020-07-20 14:48:39,756 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2020-07-20 14:48:39,757 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2020-07-20 14:48:39,757 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:48:39,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 14:48:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:48:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 14:48:39,759 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 14:48:39,759 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-07-20 14:48:39,759 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-20 14:48:39,759 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-07-20 14:48:39,760 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2020-07-20 14:48:39,761 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2020-07-20 14:48:39,761 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2020-07-20 14:48:39,761 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2020-07-20 14:48:39,761 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 14:48:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2020-07-20 14:48:39,764 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2020-07-20 14:48:39,764 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-20 14:48:39,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:48:39,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 14:48:39,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 14:48:39,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 14:48:39,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 14:48:39,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 14:48:39,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 14:48:39,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 14:48:39,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 14:48:39,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 14:48:39,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:48:39,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 14:48:39,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:48:42,810 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:48:42,811 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-20 14:48:42,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:48:42 BoogieIcfgContainer [2020-07-20 14:48:42,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:48:42,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:48:42,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:48:42,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:48:42,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:48:38" (1/3) ... [2020-07-20 14:48:42,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679d7f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:48:42, skipping insertion in model container [2020-07-20 14:48:42,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:48:39" (2/3) ... [2020-07-20 14:48:42,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679d7f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:48:42, skipping insertion in model container [2020-07-20 14:48:42,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:48:42" (3/3) ... [2020-07-20 14:48:42,827 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_5.c [2020-07-20 14:48:42,837 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:48:42,846 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:48:42,858 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:48:42,884 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:48:42,884 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:48:42,884 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:48:42,885 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:48:42,885 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:48:42,885 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:48:42,885 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:48:42,885 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:48:42,910 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-07-20 14:48:42,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-20 14:48:42,921 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:48:42,922 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] [2020-07-20 14:48:42,923 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:48:42,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:48:42,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1328586124, now seen corresponding path program 1 times [2020-07-20 14:48:42,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:48:42,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100860409] [2020-07-20 14:48:42,937 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:48:43,193 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:48:43,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:48:43,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 14:48:43,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:48:43,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:48:43,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:48:43,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100860409] [2020-07-20 14:48:43,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:48:43,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:48:43,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525905984] [2020-07-20 14:48:43,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:48:43,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:48:43,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:48:43,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:48:43,283 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 3 states. [2020-07-20 14:48:43,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:48:43,373 INFO L93 Difference]: Finished difference Result 264 states and 407 transitions. [2020-07-20 14:48:43,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:48:43,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-07-20 14:48:43,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:48:43,395 INFO L225 Difference]: With dead ends: 264 [2020-07-20 14:48:43,395 INFO L226 Difference]: Without dead ends: 141 [2020-07-20 14:48:43,401 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 [2020-07-20 14:48:43,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-07-20 14:48:43,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 121. [2020-07-20 14:48:43,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-20 14:48:43,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 168 transitions. [2020-07-20 14:48:43,472 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 168 transitions. Word has length 43 [2020-07-20 14:48:43,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:48:43,473 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 168 transitions. [2020-07-20 14:48:43,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:48:43,473 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 168 transitions. [2020-07-20 14:48:43,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 14:48:43,477 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:48:43,478 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] [2020-07-20 14:48:43,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:48:43,694 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:48:43,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:48:43,695 INFO L82 PathProgramCache]: Analyzing trace with hash -294008176, now seen corresponding path program 1 times [2020-07-20 14:48:43,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:48:43,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205876815] [2020-07-20 14:48:43,696 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:48:43,888 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:48:43,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:48:43,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 14:48:43,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:48:43,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:48:43,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:48:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:48:44,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205876815] [2020-07-20 14:48:44,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:48:44,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-20 14:48:44,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27856407] [2020-07-20 14:48:44,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:48:44,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:48:44,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:48:44,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:48:44,027 INFO L87 Difference]: Start difference. First operand 121 states and 168 transitions. Second operand 6 states. [2020-07-20 14:48:44,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:48:44,428 INFO L93 Difference]: Finished difference Result 308 states and 452 transitions. [2020-07-20 14:48:44,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:48:44,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-07-20 14:48:44,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:48:44,437 INFO L225 Difference]: With dead ends: 308 [2020-07-20 14:48:44,438 INFO L226 Difference]: Without dead ends: 203 [2020-07-20 14:48:44,447 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 [2020-07-20 14:48:44,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-20 14:48:44,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 127. [2020-07-20 14:48:44,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-07-20 14:48:44,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 174 transitions. [2020-07-20 14:48:44,485 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 174 transitions. Word has length 45 [2020-07-20 14:48:44,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:48:44,485 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 174 transitions. [2020-07-20 14:48:44,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:48:44,486 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 174 transitions. [2020-07-20 14:48:44,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 14:48:44,489 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:48:44,489 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] [2020-07-20 14:48:44,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:48:44,705 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:48:44,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:48:44,706 INFO L82 PathProgramCache]: Analyzing trace with hash -375236310, now seen corresponding path program 1 times [2020-07-20 14:48:44,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:48:44,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77816385] [2020-07-20 14:48:44,708 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:48:45,128 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:48:45,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:48:45,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 14:48:45,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:48:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-07-20 14:48:45,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:48:45,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77816385] [2020-07-20 14:48:45,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:48:45,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:48:45,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187413049] [2020-07-20 14:48:45,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:48:45,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:48:45,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:48:45,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:48:45,169 INFO L87 Difference]: Start difference. First operand 127 states and 174 transitions. Second operand 3 states. [2020-07-20 14:48:45,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:48:45,198 INFO L93 Difference]: Finished difference Result 178 states and 240 transitions. [2020-07-20 14:48:45,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:48:45,200 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-07-20 14:48:45,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:48:45,204 INFO L225 Difference]: With dead ends: 178 [2020-07-20 14:48:45,204 INFO L226 Difference]: Without dead ends: 135 [2020-07-20 14:48:45,205 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 [2020-07-20 14:48:45,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-07-20 14:48:45,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 127. [2020-07-20 14:48:45,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-07-20 14:48:45,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 173 transitions. [2020-07-20 14:48:45,231 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 173 transitions. Word has length 55 [2020-07-20 14:48:45,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:48:45,232 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 173 transitions. [2020-07-20 14:48:45,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:48:45,232 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 173 transitions. [2020-07-20 14:48:45,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-20 14:48:45,238 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:48:45,239 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, 1] [2020-07-20 14:48:45,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:48:45,440 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:48:45,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:48:45,441 INFO L82 PathProgramCache]: Analyzing trace with hash -7587439, now seen corresponding path program 1 times [2020-07-20 14:48:45,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:48:45,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384833629] [2020-07-20 14:48:45,442 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:48:45,879 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:48:45,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:48:45,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 14:48:45,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:48:45,912 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-07-20 14:48:45,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:48:45,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384833629] [2020-07-20 14:48:45,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:48:45,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:48:45,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395117560] [2020-07-20 14:48:45,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:48:45,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:48:45,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:48:45,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:48:45,916 INFO L87 Difference]: Start difference. First operand 127 states and 173 transitions. Second operand 3 states. [2020-07-20 14:48:45,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:48:45,962 INFO L93 Difference]: Finished difference Result 188 states and 256 transitions. [2020-07-20 14:48:45,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:48:45,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-07-20 14:48:45,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:48:45,966 INFO L225 Difference]: With dead ends: 188 [2020-07-20 14:48:45,966 INFO L226 Difference]: Without dead ends: 145 [2020-07-20 14:48:45,967 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 [2020-07-20 14:48:45,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-07-20 14:48:45,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 128. [2020-07-20 14:48:45,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-20 14:48:45,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 174 transitions. [2020-07-20 14:48:45,995 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 174 transitions. Word has length 56 [2020-07-20 14:48:45,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:48:45,996 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 174 transitions. [2020-07-20 14:48:45,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:48:45,998 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 174 transitions. [2020-07-20 14:48:45,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 14:48:45,999 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:48:45,999 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] [2020-07-20 14:48:46,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:48:46,202 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:48:46,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:48:46,203 INFO L82 PathProgramCache]: Analyzing trace with hash -360729933, now seen corresponding path program 1 times [2020-07-20 14:48:46,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:48:46,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495663611] [2020-07-20 14:48:46,204 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:48:46,486 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:48:46,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:48:46,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:48:46,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:48:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-20 14:48:46,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:48:46,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495663611] [2020-07-20 14:48:46,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:48:46,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 14:48:46,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041801835] [2020-07-20 14:48:46,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 14:48:46,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:48:46,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 14:48:46,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 14:48:46,519 INFO L87 Difference]: Start difference. First operand 128 states and 174 transitions. Second operand 4 states. [2020-07-20 14:48:46,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:48:46,564 INFO L93 Difference]: Finished difference Result 172 states and 228 transitions. [2020-07-20 14:48:46,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 14:48:46,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-07-20 14:48:46,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:48:46,566 INFO L225 Difference]: With dead ends: 172 [2020-07-20 14:48:46,566 INFO L226 Difference]: Without dead ends: 140 [2020-07-20 14:48:46,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:48:46,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-07-20 14:48:46,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-07-20 14:48:46,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-20 14:48:46,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2020-07-20 14:48:46,578 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 57 [2020-07-20 14:48:46,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:48:46,579 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2020-07-20 14:48:46,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 14:48:46,579 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2020-07-20 14:48:46,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-20 14:48:46,581 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:48:46,581 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 14:48:46,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:48:46,795 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:48:46,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:48:46,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1182319835, now seen corresponding path program 1 times [2020-07-20 14:48:46,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:48:46,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126481706] [2020-07-20 14:48:46,798 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:48:48,349 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:48:48,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:48:48,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:48:48,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:48:48,409 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:48:48,434 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-07-20 14:48:48,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:48:48,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126481706] [2020-07-20 14:48:48,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:48:48,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:48:48,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965768541] [2020-07-20 14:48:48,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:48:48,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:48:48,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:48:48,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:48:48,438 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand 5 states. [2020-07-20 14:48:48,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:48:48,737 INFO L93 Difference]: Finished difference Result 176 states and 236 transitions. [2020-07-20 14:48:48,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:48:48,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-07-20 14:48:48,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:48:48,742 INFO L225 Difference]: With dead ends: 176 [2020-07-20 14:48:48,742 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:48:48,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:48:48,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:48:48,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:48:48,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:48:48,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:48:48,745 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2020-07-20 14:48:48,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:48:48,745 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:48:48,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:48:48,745 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:48:48,745 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:48:48,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:48:48,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:48:49,256 INFO L268 CegarLoopResult]: For program point Id_MCDC_100FINAL(lines 418 424) no Hoare annotation was computed. [2020-07-20 14:48:49,257 INFO L268 CegarLoopResult]: For program point Id_MCDC_100EXIT(lines 418 424) no Hoare annotation was computed. [2020-07-20 14:48:49,257 INFO L271 CegarLoopResult]: At program point Id_MCDC_100ENTRY(lines 418 424) the Hoare annotation is: true [2020-07-20 14:48:49,257 INFO L271 CegarLoopResult]: At program point L422(line 422) the Hoare annotation is: true [2020-07-20 14:48:49,258 INFO L268 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-07-20 14:48:49,258 INFO L271 CegarLoopResult]: At program point L403(line 403) the Hoare annotation is: true [2020-07-20 14:48:49,258 INFO L268 CegarLoopResult]: For program point L403-1(line 403) no Hoare annotation was computed. [2020-07-20 14:48:49,258 INFO L271 CegarLoopResult]: At program point Id_MCDC_99ENTRY(lines 398 417) the Hoare annotation is: true [2020-07-20 14:48:49,258 INFO L268 CegarLoopResult]: For program point Id_MCDC_99EXIT(lines 398 417) no Hoare annotation was computed. [2020-07-20 14:48:49,258 INFO L268 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-07-20 14:48:49,259 INFO L268 CegarLoopResult]: For program point L406-2(lines 406 413) no Hoare annotation was computed. [2020-07-20 14:48:49,259 INFO L268 CegarLoopResult]: For program point L404-2(lines 404 414) no Hoare annotation was computed. [2020-07-20 14:48:49,259 INFO L271 CegarLoopResult]: At program point L404-3(lines 404 414) the Hoare annotation is: true [2020-07-20 14:48:49,259 INFO L271 CegarLoopResult]: At program point L404-4(lines 404 414) the Hoare annotation is: true [2020-07-20 14:48:49,259 INFO L268 CegarLoopResult]: For program point Id_MCDC_99FINAL(lines 398 417) no Hoare annotation was computed. [2020-07-20 14:48:49,259 INFO L268 CegarLoopResult]: For program point L221(line 221) no Hoare annotation was computed. [2020-07-20 14:48:49,260 INFO L268 CegarLoopResult]: For program point L213(line 213) no Hoare annotation was computed. [2020-07-20 14:48:49,260 INFO L268 CegarLoopResult]: For program point L209(line 209) no Hoare annotation was computed. [2020-07-20 14:48:49,260 INFO L268 CegarLoopResult]: For program point L209-2(line 209) no Hoare annotation was computed. [2020-07-20 14:48:49,260 INFO L271 CegarLoopResult]: At program point Id_MCDC_89ENTRY(lines 191 246) the Hoare annotation is: true [2020-07-20 14:48:49,260 INFO L268 CegarLoopResult]: For program point Id_MCDC_89EXIT(lines 191 246) no Hoare annotation was computed. [2020-07-20 14:48:49,260 INFO L268 CegarLoopResult]: For program point L234(lines 234 239) no Hoare annotation was computed. [2020-07-20 14:48:49,261 INFO L268 CegarLoopResult]: For program point L234-1(lines 232 244) no Hoare annotation was computed. [2020-07-20 14:48:49,261 INFO L268 CegarLoopResult]: For program point L218(line 218) no Hoare annotation was computed. [2020-07-20 14:48:49,261 INFO L268 CegarLoopResult]: For program point L218-2(line 218) no Hoare annotation was computed. [2020-07-20 14:48:49,261 INFO L268 CegarLoopResult]: For program point L210(line 210) no Hoare annotation was computed. [2020-07-20 14:48:49,261 INFO L268 CegarLoopResult]: For program point L202(lines 202 205) no Hoare annotation was computed. [2020-07-20 14:48:49,261 INFO L268 CegarLoopResult]: For program point Id_MCDC_89FINAL(lines 191 246) no Hoare annotation was computed. [2020-07-20 14:48:49,262 INFO L268 CegarLoopResult]: For program point L227(lines 227 230) no Hoare annotation was computed. [2020-07-20 14:48:49,262 INFO L268 CegarLoopResult]: For program point L219(line 219) no Hoare annotation was computed. [2020-07-20 14:48:49,262 INFO L268 CegarLoopResult]: For program point L215(line 215) no Hoare annotation was computed. [2020-07-20 14:48:49,262 INFO L268 CegarLoopResult]: For program point L215-2(line 215) no Hoare annotation was computed. [2020-07-20 14:48:49,262 INFO L271 CegarLoopResult]: At program point L207(lines 207 223) the Hoare annotation is: true [2020-07-20 14:48:49,262 INFO L268 CegarLoopResult]: For program point L232(line 232) no Hoare annotation was computed. [2020-07-20 14:48:49,263 INFO L268 CegarLoopResult]: For program point L232-2(line 232) no Hoare annotation was computed. [2020-07-20 14:48:49,263 INFO L268 CegarLoopResult]: For program point L232-3(line 232) no Hoare annotation was computed. [2020-07-20 14:48:49,263 INFO L268 CegarLoopResult]: For program point L232-5(lines 232 244) no Hoare annotation was computed. [2020-07-20 14:48:49,263 INFO L268 CegarLoopResult]: For program point L224-1(lines 224 231) no Hoare annotation was computed. [2020-07-20 14:48:49,263 INFO L271 CegarLoopResult]: At program point L224-3(lines 224 231) the Hoare annotation is: true [2020-07-20 14:48:49,263 INFO L268 CegarLoopResult]: For program point L224-4(lines 224 231) no Hoare annotation was computed. [2020-07-20 14:48:49,264 INFO L268 CegarLoopResult]: For program point L216(line 216) no Hoare annotation was computed. [2020-07-20 14:48:49,264 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-07-20 14:48:49,264 INFO L268 CegarLoopResult]: For program point L212-2(line 212) no Hoare annotation was computed. [2020-07-20 14:48:49,264 INFO L268 CegarLoopResult]: For program point L200(lines 200 206) no Hoare annotation was computed. [2020-07-20 14:48:49,264 INFO L268 CegarLoopResult]: For program point L200-2(lines 200 206) no Hoare annotation was computed. [2020-07-20 14:48:49,264 INFO L268 CegarLoopResult]: For program point L196(lines 196 199) no Hoare annotation was computed. [2020-07-20 14:48:49,264 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 425 456) the Hoare annotation is: true [2020-07-20 14:48:49,265 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 425 456) no Hoare annotation was computed. [2020-07-20 14:48:49,265 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 425 456) no Hoare annotation was computed. [2020-07-20 14:48:49,265 INFO L271 CegarLoopResult]: At program point L455(line 455) the Hoare annotation is: true [2020-07-20 14:48:49,265 INFO L268 CegarLoopResult]: For program point L450(lines 450 453) no Hoare annotation was computed. [2020-07-20 14:48:49,265 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 14:48:49,265 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 14:48:49,266 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 14:48:49,266 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 14:48:49,266 INFO L268 CegarLoopResult]: For program point L386-1(line 386) no Hoare annotation was computed. [2020-07-20 14:48:49,266 INFO L268 CegarLoopResult]: For program point L374-2(lines 374 391) no Hoare annotation was computed. [2020-07-20 14:48:49,266 INFO L271 CegarLoopResult]: At program point L374-3(lines 374 391) the Hoare annotation is: true [2020-07-20 14:48:49,266 INFO L268 CegarLoopResult]: For program point L374-4(lines 374 391) no Hoare annotation was computed. [2020-07-20 14:48:49,267 INFO L271 CegarLoopResult]: At program point Id_MCDC_97ENTRY(lines 329 397) the Hoare annotation is: true [2020-07-20 14:48:49,267 INFO L268 CegarLoopResult]: For program point Id_MCDC_97EXIT(lines 329 397) no Hoare annotation was computed. [2020-07-20 14:48:49,267 INFO L268 CegarLoopResult]: For program point L387(lines 387 390) no Hoare annotation was computed. [2020-07-20 14:48:49,267 INFO L268 CegarLoopResult]: For program point L354(lines 354 395) no Hoare annotation was computed. [2020-07-20 14:48:49,267 INFO L268 CegarLoopResult]: For program point L350-2(lines 350 353) no Hoare annotation was computed. [2020-07-20 14:48:49,267 INFO L264 CegarLoopResult]: At program point L350-3(lines 350 353) the Hoare annotation is: (= 6144 Id_MCDC_97_~Id_MCDC_123~0) [2020-07-20 14:48:49,268 INFO L268 CegarLoopResult]: For program point L350-4(lines 330 397) no Hoare annotation was computed. [2020-07-20 14:48:49,268 INFO L271 CegarLoopResult]: At program point L363(line 363) the Hoare annotation is: true [2020-07-20 14:48:49,268 INFO L268 CegarLoopResult]: For program point L363-1(lines 363 366) no Hoare annotation was computed. [2020-07-20 14:48:49,268 INFO L268 CegarLoopResult]: For program point Id_MCDC_97FINAL(lines 329 397) no Hoare annotation was computed. [2020-07-20 14:48:49,268 INFO L271 CegarLoopResult]: At program point L359(line 359) the Hoare annotation is: true [2020-07-20 14:48:49,268 INFO L268 CegarLoopResult]: For program point L359-1(lines 359 362) no Hoare annotation was computed. [2020-07-20 14:48:49,269 INFO L271 CegarLoopResult]: At program point L376(line 376) the Hoare annotation is: true [2020-07-20 14:48:49,269 INFO L268 CegarLoopResult]: For program point L376-1(lines 376 379) no Hoare annotation was computed. [2020-07-20 14:48:49,269 INFO L268 CegarLoopResult]: For program point L356-2(lines 356 394) no Hoare annotation was computed. [2020-07-20 14:48:49,269 INFO L271 CegarLoopResult]: At program point L356-3(lines 356 394) the Hoare annotation is: true [2020-07-20 14:48:49,269 INFO L271 CegarLoopResult]: At program point L369(line 369) the Hoare annotation is: true [2020-07-20 14:48:49,269 INFO L268 CegarLoopResult]: For program point L369-1(lines 369 372) no Hoare annotation was computed. [2020-07-20 14:48:49,269 INFO L271 CegarLoopResult]: At program point L386(line 386) the Hoare annotation is: true [2020-07-20 14:48:49,270 INFO L271 CegarLoopResult]: At program point Id_MCDC_95ENTRY(lines 278 297) the Hoare annotation is: true [2020-07-20 14:48:49,270 INFO L268 CegarLoopResult]: For program point Id_MCDC_95EXIT(lines 278 297) no Hoare annotation was computed. [2020-07-20 14:48:49,270 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-07-20 14:48:49,270 INFO L264 CegarLoopResult]: At program point L294(line 294) the Hoare annotation is: (or (= 4 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4))) [2020-07-20 14:48:49,270 INFO L264 CegarLoopResult]: At program point L296-2(line 296) the Hoare annotation is: (and |Id_MCDC_95_#t~short23| (or (= 4 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4)))) [2020-07-20 14:48:49,271 INFO L268 CegarLoopResult]: For program point L294-1(line 294) no Hoare annotation was computed. [2020-07-20 14:48:49,271 INFO L268 CegarLoopResult]: For program point L296-3(line 296) no Hoare annotation was computed. [2020-07-20 14:48:49,271 INFO L264 CegarLoopResult]: At program point L288(line 288) the Hoare annotation is: (or (= 4 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4))) [2020-07-20 14:48:49,271 INFO L268 CegarLoopResult]: For program point L288-1(line 288) no Hoare annotation was computed. [2020-07-20 14:48:49,271 INFO L268 CegarLoopResult]: For program point L286(lines 286 293) no Hoare annotation was computed. [2020-07-20 14:48:49,271 INFO L268 CegarLoopResult]: For program point L286-2(lines 286 293) no Hoare annotation was computed. [2020-07-20 14:48:49,271 INFO L268 CegarLoopResult]: For program point L282(lines 282 285) no Hoare annotation was computed. [2020-07-20 14:48:49,272 INFO L264 CegarLoopResult]: At program point L295(line 295) the Hoare annotation is: (or (= 4 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4))) [2020-07-20 14:48:49,272 INFO L268 CegarLoopResult]: For program point L295-1(line 295) no Hoare annotation was computed. [2020-07-20 14:48:49,272 INFO L268 CegarLoopResult]: For program point Id_MCDC_95FINAL(lines 278 297) no Hoare annotation was computed. [2020-07-20 14:48:49,272 INFO L268 CegarLoopResult]: For program point L316(lines 316 321) no Hoare annotation was computed. [2020-07-20 14:48:49,272 INFO L268 CegarLoopResult]: For program point L316-1(lines 314 326) no Hoare annotation was computed. [2020-07-20 14:48:49,272 INFO L268 CegarLoopResult]: For program point L314(line 314) no Hoare annotation was computed. [2020-07-20 14:48:49,272 INFO L268 CegarLoopResult]: For program point L314-2(line 314) no Hoare annotation was computed. [2020-07-20 14:48:49,272 INFO L268 CegarLoopResult]: For program point L314-3(line 314) no Hoare annotation was computed. [2020-07-20 14:48:49,273 INFO L268 CegarLoopResult]: For program point L314-5(lines 314 326) no Hoare annotation was computed. [2020-07-20 14:48:49,273 INFO L268 CegarLoopResult]: For program point L306-1(lines 306 313) no Hoare annotation was computed. [2020-07-20 14:48:49,273 INFO L271 CegarLoopResult]: At program point L306-3(lines 306 313) the Hoare annotation is: true [2020-07-20 14:48:49,273 INFO L268 CegarLoopResult]: For program point L302(lines 302 305) no Hoare annotation was computed. [2020-07-20 14:48:49,273 INFO L268 CegarLoopResult]: For program point L306-4(lines 306 313) no Hoare annotation was computed. [2020-07-20 14:48:49,273 INFO L268 CegarLoopResult]: For program point Id_MCDC_96FINAL(lines 298 328) no Hoare annotation was computed. [2020-07-20 14:48:49,273 INFO L268 CegarLoopResult]: For program point L309(lines 309 312) no Hoare annotation was computed. [2020-07-20 14:48:49,273 INFO L271 CegarLoopResult]: At program point Id_MCDC_96ENTRY(lines 298 328) the Hoare annotation is: true [2020-07-20 14:48:49,274 INFO L268 CegarLoopResult]: For program point Id_MCDC_96EXIT(lines 298 328) no Hoare annotation was computed. [2020-07-20 14:48:49,274 INFO L268 CegarLoopResult]: For program point L253(lines 253 267) no Hoare annotation was computed. [2020-07-20 14:48:49,274 INFO L271 CegarLoopResult]: At program point Id_MCDC_92ENTRY(lines 247 277) the Hoare annotation is: true [2020-07-20 14:48:49,274 INFO L268 CegarLoopResult]: For program point Id_MCDC_92EXIT(lines 247 277) no Hoare annotation was computed. [2020-07-20 14:48:49,274 INFO L268 CegarLoopResult]: For program point Id_MCDC_92FINAL(lines 247 277) no Hoare annotation was computed. [2020-07-20 14:48:49,274 INFO L271 CegarLoopResult]: At program point L270(line 270) the Hoare annotation is: true [2020-07-20 14:48:49,274 INFO L268 CegarLoopResult]: For program point L270-1(line 270) no Hoare annotation was computed. [2020-07-20 14:48:49,275 INFO L268 CegarLoopResult]: For program point L268-1(lines 248 277) no Hoare annotation was computed. [2020-07-20 14:48:49,275 INFO L268 CegarLoopResult]: For program point L268-2(lines 268 275) no Hoare annotation was computed. [2020-07-20 14:48:49,275 INFO L268 CegarLoopResult]: For program point L259(lines 259 267) no Hoare annotation was computed. [2020-07-20 14:48:49,275 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:48:49,275 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:48:49,275 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:48:49,275 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:48:49,276 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 14:48:49,276 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:48:49,276 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:48:49,276 INFO L268 CegarLoopResult]: For program point avoid_zeroEXIT(lines 7 13) no Hoare annotation was computed. [2020-07-20 14:48:49,276 INFO L268 CegarLoopResult]: For program point L9(lines 9 12) no Hoare annotation was computed. [2020-07-20 14:48:49,276 INFO L268 CegarLoopResult]: For program point L9-2(lines 7 13) no Hoare annotation was computed. [2020-07-20 14:48:49,276 INFO L271 CegarLoopResult]: At program point avoid_zeroENTRY(lines 7 13) the Hoare annotation is: true [2020-07-20 14:48:49,277 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 457 464) the Hoare annotation is: true [2020-07-20 14:48:49,277 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-20 14:48:49,277 INFO L268 CegarLoopResult]: For program point L459(lines 459 462) no Hoare annotation was computed. [2020-07-20 14:48:49,277 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 457 464) no Hoare annotation was computed. [2020-07-20 14:48:49,277 INFO L268 CegarLoopResult]: For program point L459-2(lines 457 464) no Hoare annotation was computed. [2020-07-20 14:48:49,278 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 461) no Hoare annotation was computed. [2020-07-20 14:48:49,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:48:49 BoogieIcfgContainer [2020-07-20 14:48:49,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:48:49,302 INFO L168 Benchmark]: Toolchain (without parser) took 10383.45 ms. Allocated memory was 145.2 MB in the beginning and 245.9 MB in the end (delta: 100.7 MB). Free memory was 101.5 MB in the beginning and 88.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 113.3 MB. Max. memory is 7.1 GB. [2020-07-20 14:48:49,303 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 145.2 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-20 14:48:49,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.62 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 101.1 MB in the beginning and 172.6 MB in the end (delta: -71.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-07-20 14:48:49,304 INFO L168 Benchmark]: Boogie Preprocessor took 101.45 ms. Allocated memory is still 202.4 MB. Free memory was 172.6 MB in the beginning and 168.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-07-20 14:48:49,305 INFO L168 Benchmark]: RCFGBuilder took 3136.87 ms. Allocated memory is still 202.4 MB. Free memory was 168.3 MB in the beginning and 105.7 MB in the end (delta: 62.6 MB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB. [2020-07-20 14:48:49,306 INFO L168 Benchmark]: TraceAbstraction took 6479.57 ms. Allocated memory was 202.4 MB in the beginning and 245.9 MB in the end (delta: 43.5 MB). Free memory was 105.1 MB in the beginning and 88.8 MB in the end (delta: 16.2 MB). Peak memory consumption was 59.8 MB. Max. memory is 7.1 GB. [2020-07-20 14:48:49,310 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 145.2 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 653.62 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 101.1 MB in the beginning and 172.6 MB in the end (delta: -71.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.45 ms. Allocated memory is still 202.4 MB. Free memory was 172.6 MB in the beginning and 168.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3136.87 ms. Allocated memory is still 202.4 MB. Free memory was 168.3 MB in the beginning and 105.7 MB in the end (delta: 62.6 MB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6479.57 ms. Allocated memory was 202.4 MB in the beginning and 245.9 MB in the end (delta: 43.5 MB). Free memory was 105.1 MB in the beginning and 88.8 MB in the end (delta: 16.2 MB). Peak memory consumption was 59.8 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, 133 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1080 SDtfs, 181 SDslu, 1833 SDs, 0 SdLazy, 114 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 363 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred 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, 121 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 160 PreInvPairs, 185 NumberOfFragments, 66 HoareAnnotationTreeSize, 160 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 34 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 321 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 359 ConstructedInterpolants, 0 QuantifiedInterpolants, 21643 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2411 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 80/82 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...