/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 22:47:35,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 22:47:35,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 22:47:35,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 22:47:35,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 22:47:35,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 22:47:35,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 22:47:35,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 22:47:35,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 22:47:35,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 22:47:35,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 22:47:35,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 22:47:35,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 22:47:35,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 22:47:35,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 22:47:35,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 22:47:35,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 22:47:35,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 22:47:35,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 22:47:35,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 22:47:35,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 22:47:35,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 22:47:35,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 22:47:35,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 22:47:35,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 22:47:35,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 22:47:35,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 22:47:35,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 22:47:35,488 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 22:47:35,507 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 22:47:35,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 22:47:35,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 22:47:35,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 22:47:35,509 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 22:47:35,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 22:47:35,510 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 22:47:35,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 22:47:35,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 22:47:35,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 22:47:35,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 22:47:35,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 22:47:35,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 22:47:35,511 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 22:47:35,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 22:47:35,512 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 22:47:35,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 22:47:35,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 22:47:35,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 22:47:35,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 22:47:35,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 22:47:35,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:47:35,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 22:47:35,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 22:47:35,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 22:47:35,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 22:47:35,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:35,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 22:47:35,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 22:47:35,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 22:47:35,834 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 22:47:35,862 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 22:47:35,869 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 22:47:35,871 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 22:47:35,871 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 22:47:35,872 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2020-07-20 22:47:35,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c0b0dd65/e3e1902e371d46498ca9ed27db79b03f/FLAG4b7aad6be [2020-07-20 22:47:36,634 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 22:47:36,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2020-07-20 22:47:36,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c0b0dd65/e3e1902e371d46498ca9ed27db79b03f/FLAG4b7aad6be [2020-07-20 22:47:36,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c0b0dd65/e3e1902e371d46498ca9ed27db79b03f [2020-07-20 22:47:36,858 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 22:47:36,861 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 22:47:36,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 22:47:36,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 22:47:36,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 22:47:36,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:47:36" (1/1) ... [2020-07-20 22:47:36,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76dca2e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:36, skipping insertion in model container [2020-07-20 22:47:36,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:47:36" (1/1) ... [2020-07-20 22:47:36,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 22:47:36,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 22:47:37,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:47:37,442 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 22:47:37,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:47:37,556 INFO L208 MainTranslator]: Completed translation [2020-07-20 22:47:37,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:37 WrapperNode [2020-07-20 22:47:37,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 22:47:37,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 22:47:37,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 22:47:37,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 22:47:37,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:37" (1/1) ... [2020-07-20 22:47:37,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:37" (1/1) ... [2020-07-20 22:47:37,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:37" (1/1) ... [2020-07-20 22:47:37,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:37" (1/1) ... [2020-07-20 22:47:37,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:37" (1/1) ... [2020-07-20 22:47:37,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:37" (1/1) ... [2020-07-20 22:47:37,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:37" (1/1) ... [2020-07-20 22:47:37,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 22:47:37,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 22:47:37,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 22:47:37,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 22:47:37,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:47:37,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 22:47:37,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 22:47:37,807 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 22:47:37,807 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-07-20 22:47:37,808 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2020-07-20 22:47:37,808 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2020-07-20 22:47:37,809 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2020-07-20 22:47:37,809 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2020-07-20 22:47:37,809 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2020-07-20 22:47:37,810 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2020-07-20 22:47:37,811 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2020-07-20 22:47:37,812 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 22:47:37,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 22:47:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 22:47:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 22:47:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 22:47:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-07-20 22:47:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-20 22:47:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-07-20 22:47:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2020-07-20 22:47:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2020-07-20 22:47:37,818 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2020-07-20 22:47:37,818 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2020-07-20 22:47:37,818 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 22:47:37,818 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2020-07-20 22:47:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2020-07-20 22:47:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-20 22:47:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 22:47:37,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 22:47:37,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 22:47:37,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 22:47:37,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 22:47:37,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 22:47:37,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 22:47:37,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 22:47:37,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 22:47:37,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 22:47:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 22:47:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 22:47:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 22:47:39,369 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 22:47:39,369 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-20 22:47:39,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:47:39 BoogieIcfgContainer [2020-07-20 22:47:39,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 22:47:39,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 22:47:39,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 22:47:39,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 22:47:39,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:47:36" (1/3) ... [2020-07-20 22:47:39,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7c5a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:47:39, skipping insertion in model container [2020-07-20 22:47:39,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:47:37" (2/3) ... [2020-07-20 22:47:39,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7c5a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:47:39, skipping insertion in model container [2020-07-20 22:47:39,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:47:39" (3/3) ... [2020-07-20 22:47:39,396 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_2.c [2020-07-20 22:47:39,415 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 22:47:39,431 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 22:47:39,451 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 22:47:39,483 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 22:47:39,483 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 22:47:39,483 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 22:47:39,484 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 22:47:39,484 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 22:47:39,484 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 22:47:39,484 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 22:47:39,485 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 22:47:39,518 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-07-20 22:47:39,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-20 22:47:39,534 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:47:39,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:47:39,537 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:47:39,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:47:39,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1652927245, now seen corresponding path program 1 times [2020-07-20 22:47:39,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:47:39,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822982008] [2020-07-20 22:47:39,561 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:39,977 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 22:47:39,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:47:39,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 22:47:40,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:47:40,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:47:40,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:47:40,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822982008] [2020-07-20 22:47:40,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:47:40,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:47:40,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255539295] [2020-07-20 22:47:40,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:47:40,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:47:40,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:47:40,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:47:40,136 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2020-07-20 22:47:40,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:47:40,255 INFO L93 Difference]: Finished difference Result 262 states and 403 transitions. [2020-07-20 22:47:40,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:47:40,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-07-20 22:47:40,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:47:40,279 INFO L225 Difference]: With dead ends: 262 [2020-07-20 22:47:40,279 INFO L226 Difference]: Without dead ends: 140 [2020-07-20 22:47:40,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:47:40,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-07-20 22:47:40,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 120. [2020-07-20 22:47:40,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-20 22:47:40,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 166 transitions. [2020-07-20 22:47:40,374 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 166 transitions. Word has length 39 [2020-07-20 22:47:40,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:47:40,378 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 166 transitions. [2020-07-20 22:47:40,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:47:40,379 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 166 transitions. [2020-07-20 22:47:40,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-20 22:47:40,387 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:47:40,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:47:40,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:40,602 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:47:40,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:47:40,603 INFO L82 PathProgramCache]: Analyzing trace with hash -296822387, now seen corresponding path program 1 times [2020-07-20 22:47:40,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:47:40,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960719608] [2020-07-20 22:47:40,605 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:40,868 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 22:47:40,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:47:40,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 22:47:40,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:47:40,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 22:47:40,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:47:40,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960719608] [2020-07-20 22:47:40,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:47:40,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:47:40,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667488625] [2020-07-20 22:47:40,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:47:40,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:47:40,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:47:40,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:47:40,924 INFO L87 Difference]: Start difference. First operand 120 states and 166 transitions. Second operand 3 states. [2020-07-20 22:47:40,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:47:40,985 INFO L93 Difference]: Finished difference Result 170 states and 230 transitions. [2020-07-20 22:47:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:47:40,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-07-20 22:47:40,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:47:40,991 INFO L225 Difference]: With dead ends: 170 [2020-07-20 22:47:40,991 INFO L226 Difference]: Without dead ends: 128 [2020-07-20 22:47:40,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:47:40,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-07-20 22:47:41,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 120. [2020-07-20 22:47:41,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-20 22:47:41,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 165 transitions. [2020-07-20 22:47:41,013 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 165 transitions. Word has length 41 [2020-07-20 22:47:41,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:47:41,013 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 165 transitions. [2020-07-20 22:47:41,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:47:41,013 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 165 transitions. [2020-07-20 22:47:41,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-20 22:47:41,016 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:47:41,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:47:41,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:41,231 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:47:41,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:47:41,232 INFO L82 PathProgramCache]: Analyzing trace with hash -469545370, now seen corresponding path program 1 times [2020-07-20 22:47:41,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:47:41,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693398805] [2020-07-20 22:47:41,234 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:41,455 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 22:47:41,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:47:41,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 22:47:41,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:47:41,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 22:47:41,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:47:41,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693398805] [2020-07-20 22:47:41,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:47:41,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:47:41,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667495778] [2020-07-20 22:47:41,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:47:41,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:47:41,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:47:41,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:47:41,527 INFO L87 Difference]: Start difference. First operand 120 states and 165 transitions. Second operand 3 states. [2020-07-20 22:47:41,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:47:41,620 INFO L93 Difference]: Finished difference Result 180 states and 246 transitions. [2020-07-20 22:47:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:47:41,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-07-20 22:47:41,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:47:41,632 INFO L225 Difference]: With dead ends: 180 [2020-07-20 22:47:41,636 INFO L226 Difference]: Without dead ends: 138 [2020-07-20 22:47:41,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:47:41,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-07-20 22:47:41,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 121. [2020-07-20 22:47:41,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-20 22:47:41,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 166 transitions. [2020-07-20 22:47:41,683 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 166 transitions. Word has length 42 [2020-07-20 22:47:41,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:47:41,684 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 166 transitions. [2020-07-20 22:47:41,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:47:41,684 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 166 transitions. [2020-07-20 22:47:41,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 22:47:41,696 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:47:41,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:47:41,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:41,908 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:47:41,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:47:41,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1206740640, now seen corresponding path program 1 times [2020-07-20 22:47:41,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:47:41,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266596980] [2020-07-20 22:47:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:42,136 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 22:47:42,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:47:42,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:47:42,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:47:42,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 22:47:42,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:47:42,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266596980] [2020-07-20 22:47:42,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:47:42,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 22:47:42,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456353163] [2020-07-20 22:47:42,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 22:47:42,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:47:42,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 22:47:42,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 22:47:42,181 INFO L87 Difference]: Start difference. First operand 121 states and 166 transitions. Second operand 4 states. [2020-07-20 22:47:42,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:47:42,255 INFO L93 Difference]: Finished difference Result 161 states and 213 transitions. [2020-07-20 22:47:42,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 22:47:42,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-07-20 22:47:42,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:47:42,259 INFO L225 Difference]: With dead ends: 161 [2020-07-20 22:47:42,262 INFO L226 Difference]: Without dead ends: 128 [2020-07-20 22:47:42,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:47:42,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-07-20 22:47:42,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-07-20 22:47:42,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-20 22:47:42,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 174 transitions. [2020-07-20 22:47:42,301 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 174 transitions. Word has length 47 [2020-07-20 22:47:42,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:47:42,301 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 174 transitions. [2020-07-20 22:47:42,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 22:47:42,302 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 174 transitions. [2020-07-20 22:47:42,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-20 22:47:42,305 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:47:42,306 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:47:42,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:42,521 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:47:42,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:47:42,522 INFO L82 PathProgramCache]: Analyzing trace with hash -367196113, now seen corresponding path program 1 times [2020-07-20 22:47:42,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:47:42,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284104479] [2020-07-20 22:47:42,524 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:42,755 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 22:47:42,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:47:42,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 22:47:42,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:47:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 22:47:42,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:47:43,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 22:47:43,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284104479] [2020-07-20 22:47:43,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:47:43,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-07-20 22:47:43,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116396252] [2020-07-20 22:47:43,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 22:47:43,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:47:43,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 22:47:43,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-20 22:47:43,009 INFO L87 Difference]: Start difference. First operand 128 states and 174 transitions. Second operand 9 states. [2020-07-20 22:47:43,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:47:43,336 INFO L93 Difference]: Finished difference Result 176 states and 231 transitions. [2020-07-20 22:47:43,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 22:47:43,337 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-07-20 22:47:43,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:47:43,342 INFO L225 Difference]: With dead ends: 176 [2020-07-20 22:47:43,342 INFO L226 Difference]: Without dead ends: 142 [2020-07-20 22:47:43,344 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 [2020-07-20 22:47:43,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-07-20 22:47:43,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-07-20 22:47:43,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-07-20 22:47:43,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 190 transitions. [2020-07-20 22:47:43,376 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 190 transitions. Word has length 53 [2020-07-20 22:47:43,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:47:43,376 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 190 transitions. [2020-07-20 22:47:43,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 22:47:43,377 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 190 transitions. [2020-07-20 22:47:43,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 22:47:43,382 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:47:43,382 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:47:43,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:43,598 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:47:43,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:47:43,598 INFO L82 PathProgramCache]: Analyzing trace with hash -119201668, now seen corresponding path program 1 times [2020-07-20 22:47:43,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:47:43,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398683070] [2020-07-20 22:47:43,599 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:43,897 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 22:47:43,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:47:43,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 22:47:43,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:47:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-20 22:47:43,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:47:43,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398683070] [2020-07-20 22:47:43,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:47:43,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 22:47:43,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248105444] [2020-07-20 22:47:43,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 22:47:43,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:47:43,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 22:47:43,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 22:47:43,983 INFO L87 Difference]: Start difference. First operand 142 states and 190 transitions. Second operand 4 states. [2020-07-20 22:47:44,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:47:44,003 INFO L93 Difference]: Finished difference Result 142 states and 190 transitions. [2020-07-20 22:47:44,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 22:47:44,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-07-20 22:47:44,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:47:44,005 INFO L225 Difference]: With dead ends: 142 [2020-07-20 22:47:44,005 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 22:47:44,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:47:44,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 22:47:44,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 22:47:44,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 22:47:44,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 22:47:44,007 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-07-20 22:47:44,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:47:44,008 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 22:47:44,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 22:47:44,008 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 22:47:44,008 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 22:47:44,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:47:44,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 22:47:44,496 INFO L268 CegarLoopResult]: For program point Id_MCDC_100FINAL(lines 418 424) no Hoare annotation was computed. [2020-07-20 22:47:44,496 INFO L268 CegarLoopResult]: For program point Id_MCDC_100EXIT(lines 418 424) no Hoare annotation was computed. [2020-07-20 22:47:44,496 INFO L271 CegarLoopResult]: At program point Id_MCDC_100ENTRY(lines 418 424) the Hoare annotation is: true [2020-07-20 22:47:44,497 INFO L271 CegarLoopResult]: At program point L422(line 422) the Hoare annotation is: true [2020-07-20 22:47:44,497 INFO L268 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-07-20 22:47:44,497 INFO L271 CegarLoopResult]: At program point L403(line 403) the Hoare annotation is: true [2020-07-20 22:47:44,497 INFO L268 CegarLoopResult]: For program point L403-1(line 403) no Hoare annotation was computed. [2020-07-20 22:47:44,497 INFO L271 CegarLoopResult]: At program point Id_MCDC_99ENTRY(lines 398 417) the Hoare annotation is: true [2020-07-20 22:47:44,497 INFO L268 CegarLoopResult]: For program point Id_MCDC_99EXIT(lines 398 417) no Hoare annotation was computed. [2020-07-20 22:47:44,498 INFO L268 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-07-20 22:47:44,498 INFO L268 CegarLoopResult]: For program point L406-2(lines 406 413) no Hoare annotation was computed. [2020-07-20 22:47:44,498 INFO L268 CegarLoopResult]: For program point L404-2(lines 404 414) no Hoare annotation was computed. [2020-07-20 22:47:44,498 INFO L271 CegarLoopResult]: At program point L404-3(lines 404 414) the Hoare annotation is: true [2020-07-20 22:47:44,498 INFO L271 CegarLoopResult]: At program point L404-4(lines 404 414) the Hoare annotation is: true [2020-07-20 22:47:44,498 INFO L268 CegarLoopResult]: For program point Id_MCDC_99FINAL(lines 398 417) no Hoare annotation was computed. [2020-07-20 22:47:44,498 INFO L268 CegarLoopResult]: For program point L221(line 221) no Hoare annotation was computed. [2020-07-20 22:47:44,499 INFO L268 CegarLoopResult]: For program point L213(line 213) no Hoare annotation was computed. [2020-07-20 22:47:44,499 INFO L268 CegarLoopResult]: For program point L209(line 209) no Hoare annotation was computed. [2020-07-20 22:47:44,499 INFO L268 CegarLoopResult]: For program point L209-2(line 209) no Hoare annotation was computed. [2020-07-20 22:47:44,499 INFO L271 CegarLoopResult]: At program point Id_MCDC_89ENTRY(lines 191 246) the Hoare annotation is: true [2020-07-20 22:47:44,499 INFO L268 CegarLoopResult]: For program point Id_MCDC_89EXIT(lines 191 246) no Hoare annotation was computed. [2020-07-20 22:47:44,499 INFO L268 CegarLoopResult]: For program point L234(lines 234 239) no Hoare annotation was computed. [2020-07-20 22:47:44,499 INFO L268 CegarLoopResult]: For program point L234-1(lines 232 244) no Hoare annotation was computed. [2020-07-20 22:47:44,500 INFO L268 CegarLoopResult]: For program point L218(line 218) no Hoare annotation was computed. [2020-07-20 22:47:44,500 INFO L268 CegarLoopResult]: For program point L218-2(line 218) no Hoare annotation was computed. [2020-07-20 22:47:44,500 INFO L268 CegarLoopResult]: For program point L210(line 210) no Hoare annotation was computed. [2020-07-20 22:47:44,500 INFO L268 CegarLoopResult]: For program point L202(lines 202 205) no Hoare annotation was computed. [2020-07-20 22:47:44,500 INFO L268 CegarLoopResult]: For program point Id_MCDC_89FINAL(lines 191 246) no Hoare annotation was computed. [2020-07-20 22:47:44,500 INFO L268 CegarLoopResult]: For program point L227(lines 227 230) no Hoare annotation was computed. [2020-07-20 22:47:44,500 INFO L268 CegarLoopResult]: For program point L219(line 219) no Hoare annotation was computed. [2020-07-20 22:47:44,501 INFO L268 CegarLoopResult]: For program point L215(line 215) no Hoare annotation was computed. [2020-07-20 22:47:44,501 INFO L268 CegarLoopResult]: For program point L215-2(line 215) no Hoare annotation was computed. [2020-07-20 22:47:44,501 INFO L271 CegarLoopResult]: At program point L207(lines 207 223) the Hoare annotation is: true [2020-07-20 22:47:44,501 INFO L268 CegarLoopResult]: For program point L232(line 232) no Hoare annotation was computed. [2020-07-20 22:47:44,501 INFO L268 CegarLoopResult]: For program point L232-2(line 232) no Hoare annotation was computed. [2020-07-20 22:47:44,501 INFO L268 CegarLoopResult]: For program point L232-3(line 232) no Hoare annotation was computed. [2020-07-20 22:47:44,502 INFO L268 CegarLoopResult]: For program point L232-5(lines 232 244) no Hoare annotation was computed. [2020-07-20 22:47:44,502 INFO L268 CegarLoopResult]: For program point L224-1(lines 224 231) no Hoare annotation was computed. [2020-07-20 22:47:44,502 INFO L271 CegarLoopResult]: At program point L224-3(lines 224 231) the Hoare annotation is: true [2020-07-20 22:47:44,502 INFO L268 CegarLoopResult]: For program point L224-4(lines 224 231) no Hoare annotation was computed. [2020-07-20 22:47:44,502 INFO L268 CegarLoopResult]: For program point L216(line 216) no Hoare annotation was computed. [2020-07-20 22:47:44,502 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-07-20 22:47:44,503 INFO L268 CegarLoopResult]: For program point L212-2(line 212) no Hoare annotation was computed. [2020-07-20 22:47:44,503 INFO L268 CegarLoopResult]: For program point L200(lines 200 206) no Hoare annotation was computed. [2020-07-20 22:47:44,503 INFO L268 CegarLoopResult]: For program point L200-2(lines 200 206) no Hoare annotation was computed. [2020-07-20 22:47:44,503 INFO L268 CegarLoopResult]: For program point L196(lines 196 199) no Hoare annotation was computed. [2020-07-20 22:47:44,503 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 425 456) the Hoare annotation is: true [2020-07-20 22:47:44,503 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 425 456) no Hoare annotation was computed. [2020-07-20 22:47:44,504 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 425 456) no Hoare annotation was computed. [2020-07-20 22:47:44,504 INFO L271 CegarLoopResult]: At program point L455(line 455) the Hoare annotation is: true [2020-07-20 22:47:44,504 INFO L268 CegarLoopResult]: For program point L450(lines 450 453) no Hoare annotation was computed. [2020-07-20 22:47:44,504 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 22:47:44,504 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 22:47:44,504 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 22:47:44,505 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 22:47:44,505 INFO L268 CegarLoopResult]: For program point L386-1(line 386) no Hoare annotation was computed. [2020-07-20 22:47:44,505 INFO L268 CegarLoopResult]: For program point L374-2(lines 374 391) no Hoare annotation was computed. [2020-07-20 22:47:44,505 INFO L271 CegarLoopResult]: At program point L374-3(lines 374 391) the Hoare annotation is: true [2020-07-20 22:47:44,505 INFO L268 CegarLoopResult]: For program point L374-4(lines 374 391) no Hoare annotation was computed. [2020-07-20 22:47:44,505 INFO L271 CegarLoopResult]: At program point Id_MCDC_97ENTRY(lines 329 397) the Hoare annotation is: true [2020-07-20 22:47:44,506 INFO L268 CegarLoopResult]: For program point Id_MCDC_97EXIT(lines 329 397) no Hoare annotation was computed. [2020-07-20 22:47:44,506 INFO L268 CegarLoopResult]: For program point L387(lines 387 390) no Hoare annotation was computed. [2020-07-20 22:47:44,506 INFO L268 CegarLoopResult]: For program point L354(lines 354 395) no Hoare annotation was computed. [2020-07-20 22:47:44,506 INFO L268 CegarLoopResult]: For program point L350-2(lines 350 353) no Hoare annotation was computed. [2020-07-20 22:47:44,506 INFO L264 CegarLoopResult]: At program point L350-3(lines 350 353) the Hoare annotation is: (= 6144 Id_MCDC_97_~Id_MCDC_123~0) [2020-07-20 22:47:44,506 INFO L268 CegarLoopResult]: For program point L350-4(lines 330 397) no Hoare annotation was computed. [2020-07-20 22:47:44,506 INFO L271 CegarLoopResult]: At program point L363(line 363) the Hoare annotation is: true [2020-07-20 22:47:44,507 INFO L268 CegarLoopResult]: For program point L363-1(lines 363 366) no Hoare annotation was computed. [2020-07-20 22:47:44,507 INFO L268 CegarLoopResult]: For program point Id_MCDC_97FINAL(lines 329 397) no Hoare annotation was computed. [2020-07-20 22:47:44,507 INFO L271 CegarLoopResult]: At program point L359(line 359) the Hoare annotation is: true [2020-07-20 22:47:44,507 INFO L268 CegarLoopResult]: For program point L359-1(lines 359 362) no Hoare annotation was computed. [2020-07-20 22:47:44,507 INFO L271 CegarLoopResult]: At program point L376(line 376) the Hoare annotation is: true [2020-07-20 22:47:44,507 INFO L268 CegarLoopResult]: For program point L376-1(lines 376 379) no Hoare annotation was computed. [2020-07-20 22:47:44,508 INFO L268 CegarLoopResult]: For program point L356-2(lines 356 394) no Hoare annotation was computed. [2020-07-20 22:47:44,508 INFO L271 CegarLoopResult]: At program point L356-3(lines 356 394) the Hoare annotation is: true [2020-07-20 22:47:44,508 INFO L271 CegarLoopResult]: At program point L369(line 369) the Hoare annotation is: true [2020-07-20 22:47:44,508 INFO L268 CegarLoopResult]: For program point L369-1(lines 369 372) no Hoare annotation was computed. [2020-07-20 22:47:44,508 INFO L271 CegarLoopResult]: At program point L386(line 386) the Hoare annotation is: true [2020-07-20 22:47:44,508 INFO L264 CegarLoopResult]: At program point L288(line 288) the Hoare annotation is: (= |Id_MCDC_95_#in~Id_MCDC_93| Id_MCDC_95_~Id_MCDC_93) [2020-07-20 22:47:44,509 INFO L268 CegarLoopResult]: For program point L288-1(line 288) no Hoare annotation was computed. [2020-07-20 22:47:44,509 INFO L268 CegarLoopResult]: For program point L286(lines 286 293) no Hoare annotation was computed. [2020-07-20 22:47:44,509 INFO L268 CegarLoopResult]: For program point L286-2(lines 286 293) no Hoare annotation was computed. [2020-07-20 22:47:44,509 INFO L268 CegarLoopResult]: For program point L282(lines 282 285) no Hoare annotation was computed. [2020-07-20 22:47:44,510 INFO L271 CegarLoopResult]: At program point Id_MCDC_95ENTRY(lines 278 297) the Hoare annotation is: true [2020-07-20 22:47:44,510 INFO L268 CegarLoopResult]: For program point Id_MCDC_95EXIT(lines 278 297) no Hoare annotation was computed. [2020-07-20 22:47:44,510 INFO L264 CegarLoopResult]: At program point L295(line 295) the Hoare annotation is: (= |Id_MCDC_95_#in~Id_MCDC_93| Id_MCDC_95_~Id_MCDC_93) [2020-07-20 22:47:44,510 INFO L264 CegarLoopResult]: At program point L294(line 294) the Hoare annotation is: (= |Id_MCDC_95_#in~Id_MCDC_93| Id_MCDC_95_~Id_MCDC_93) [2020-07-20 22:47:44,510 INFO L268 CegarLoopResult]: For program point L295-1(line 295) no Hoare annotation was computed. [2020-07-20 22:47:44,510 INFO L268 CegarLoopResult]: For program point L294-1(line 294) no Hoare annotation was computed. [2020-07-20 22:47:44,510 INFO L268 CegarLoopResult]: For program point Id_MCDC_95FINAL(lines 278 297) no Hoare annotation was computed. [2020-07-20 22:47:44,511 INFO L268 CegarLoopResult]: For program point L316(lines 316 321) no Hoare annotation was computed. [2020-07-20 22:47:44,511 INFO L268 CegarLoopResult]: For program point L316-1(lines 314 326) no Hoare annotation was computed. [2020-07-20 22:47:44,511 INFO L268 CegarLoopResult]: For program point L314(line 314) no Hoare annotation was computed. [2020-07-20 22:47:44,511 INFO L268 CegarLoopResult]: For program point L314-2(line 314) no Hoare annotation was computed. [2020-07-20 22:47:44,511 INFO L268 CegarLoopResult]: For program point L314-3(line 314) no Hoare annotation was computed. [2020-07-20 22:47:44,511 INFO L268 CegarLoopResult]: For program point L314-5(lines 314 326) no Hoare annotation was computed. [2020-07-20 22:47:44,511 INFO L268 CegarLoopResult]: For program point L306-1(lines 306 313) no Hoare annotation was computed. [2020-07-20 22:47:44,512 INFO L271 CegarLoopResult]: At program point L306-3(lines 306 313) the Hoare annotation is: true [2020-07-20 22:47:44,512 INFO L268 CegarLoopResult]: For program point L302(lines 302 305) no Hoare annotation was computed. [2020-07-20 22:47:44,512 INFO L268 CegarLoopResult]: For program point L306-4(lines 306 313) no Hoare annotation was computed. [2020-07-20 22:47:44,512 INFO L268 CegarLoopResult]: For program point Id_MCDC_96FINAL(lines 298 328) no Hoare annotation was computed. [2020-07-20 22:47:44,512 INFO L268 CegarLoopResult]: For program point L309(lines 309 312) no Hoare annotation was computed. [2020-07-20 22:47:44,512 INFO L271 CegarLoopResult]: At program point Id_MCDC_96ENTRY(lines 298 328) the Hoare annotation is: true [2020-07-20 22:47:44,513 INFO L268 CegarLoopResult]: For program point Id_MCDC_96EXIT(lines 298 328) no Hoare annotation was computed. [2020-07-20 22:47:44,513 INFO L268 CegarLoopResult]: For program point Id_MCDC_92EXIT(lines 247 277) no Hoare annotation was computed. [2020-07-20 22:47:44,513 INFO L268 CegarLoopResult]: For program point Id_MCDC_92FINAL(lines 247 277) no Hoare annotation was computed. [2020-07-20 22:47:44,513 INFO L268 CegarLoopResult]: For program point L259(lines 259 267) no Hoare annotation was computed. [2020-07-20 22:47:44,513 INFO L268 CegarLoopResult]: For program point L253(lines 253 267) no Hoare annotation was computed. [2020-07-20 22:47:44,513 INFO L271 CegarLoopResult]: At program point Id_MCDC_92ENTRY(lines 247 277) the Hoare annotation is: true [2020-07-20 22:47:44,513 INFO L271 CegarLoopResult]: At program point L272(line 272) the Hoare annotation is: true [2020-07-20 22:47:44,514 INFO L268 CegarLoopResult]: For program point L272-1(line 272) no Hoare annotation was computed. [2020-07-20 22:47:44,514 INFO L271 CegarLoopResult]: At program point L270(line 270) the Hoare annotation is: true [2020-07-20 22:47:44,514 INFO L268 CegarLoopResult]: For program point L270-1(line 270) no Hoare annotation was computed. [2020-07-20 22:47:44,514 INFO L268 CegarLoopResult]: For program point L268-1(lines 248 277) no Hoare annotation was computed. [2020-07-20 22:47:44,514 INFO L268 CegarLoopResult]: For program point L268-2(lines 268 275) no Hoare annotation was computed. [2020-07-20 22:47:44,514 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:47:44,514 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 22:47:44,515 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:47:44,515 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:47:44,515 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 22:47:44,515 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 22:47:44,515 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:47:44,515 INFO L268 CegarLoopResult]: For program point avoid_zeroEXIT(lines 7 13) no Hoare annotation was computed. [2020-07-20 22:47:44,515 INFO L268 CegarLoopResult]: For program point L9(lines 9 12) no Hoare annotation was computed. [2020-07-20 22:47:44,516 INFO L268 CegarLoopResult]: For program point L9-2(lines 7 13) no Hoare annotation was computed. [2020-07-20 22:47:44,516 INFO L271 CegarLoopResult]: At program point avoid_zeroENTRY(lines 7 13) the Hoare annotation is: true [2020-07-20 22:47:44,516 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 457 464) the Hoare annotation is: true [2020-07-20 22:47:44,516 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-20 22:47:44,516 INFO L268 CegarLoopResult]: For program point L459(lines 459 462) no Hoare annotation was computed. [2020-07-20 22:47:44,516 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 457 464) no Hoare annotation was computed. [2020-07-20 22:47:44,516 INFO L268 CegarLoopResult]: For program point L459-2(lines 457 464) no Hoare annotation was computed. [2020-07-20 22:47:44,517 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 461) no Hoare annotation was computed. [2020-07-20 22:47:44,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:47:44 BoogieIcfgContainer [2020-07-20 22:47:44,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 22:47:44,549 INFO L168 Benchmark]: Toolchain (without parser) took 7688.11 ms. Allocated memory was 144.2 MB in the beginning and 250.1 MB in the end (delta: 105.9 MB). Free memory was 99.5 MB in the beginning and 125.2 MB in the end (delta: -25.7 MB). Peak memory consumption was 80.2 MB. Max. memory is 7.1 GB. [2020-07-20 22:47:44,551 INFO L168 Benchmark]: CDTParser took 0.80 ms. Allocated memory is still 144.2 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 22:47:44,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.24 ms. Allocated memory was 144.2 MB in the beginning and 202.9 MB in the end (delta: 58.7 MB). Free memory was 99.1 MB in the beginning and 173.0 MB in the end (delta: -73.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-07-20 22:47:44,553 INFO L168 Benchmark]: Boogie Preprocessor took 118.54 ms. Allocated memory is still 202.9 MB. Free memory was 173.0 MB in the beginning and 168.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-20 22:47:44,554 INFO L168 Benchmark]: RCFGBuilder took 1701.82 ms. Allocated memory is still 202.9 MB. Free memory was 168.9 MB in the beginning and 106.7 MB in the end (delta: 62.2 MB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB. [2020-07-20 22:47:44,555 INFO L168 Benchmark]: TraceAbstraction took 5163.37 ms. Allocated memory was 202.9 MB in the beginning and 250.1 MB in the end (delta: 47.2 MB). Free memory was 106.1 MB in the beginning and 125.2 MB in the end (delta: -19.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-07-20 22:47:44,559 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 ms. Allocated memory is still 144.2 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 696.24 ms. Allocated memory was 144.2 MB in the beginning and 202.9 MB in the end (delta: 58.7 MB). Free memory was 99.1 MB in the beginning and 173.0 MB in the end (delta: -73.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.54 ms. Allocated memory is still 202.9 MB. Free memory was 173.0 MB in the beginning and 168.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1701.82 ms. Allocated memory is still 202.9 MB. Free memory was 168.9 MB in the beginning and 106.7 MB in the end (delta: 62.2 MB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5163.37 ms. Allocated memory was 202.9 MB in the beginning and 250.1 MB in the end (delta: 47.2 MB). Free memory was 106.1 MB in the beginning and 125.2 MB in the end (delta: -19.1 MB). Peak memory consumption was 28.1 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: 4.7s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.8s, 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, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 45 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 135 PreInvPairs, 163 NumberOfFragments, 42 HoareAnnotationTreeSize, 135 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 34 FomulaSimplificationsInter, 87 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 277 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 19255 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2191 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 16/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...