/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 02:07:39,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 02:07:39,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 02:07:39,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 02:07:39,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 02:07:39,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 02:07:39,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 02:07:39,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 02:07:39,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 02:07:39,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 02:07:39,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 02:07:39,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 02:07:39,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 02:07:39,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 02:07:39,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 02:07:39,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 02:07:39,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 02:07:39,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 02:07:39,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 02:07:39,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 02:07:39,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 02:07:39,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 02:07:39,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 02:07:39,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 02:07:39,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 02:07:39,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 02:07:39,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 02:07:39,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 02:07:39,585 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 02:07:39,601 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 02:07:39,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 02:07:39,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 02:07:39,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 02:07:39,606 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 02:07:39,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 02:07:39,606 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 02:07:39,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 02:07:39,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 02:07:39,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 02:07:39,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 02:07:39,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 02:07:39,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 02:07:39,610 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 02:07:39,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 02:07:39,610 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 02:07:39,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 02:07:39,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 02:07:39,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 02:07:39,612 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 02:07:39,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 02:07:39,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 02:07:39,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 02:07:39,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 02:07:39,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 02:07:39,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 02:07:39,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:39,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 02:07:39,614 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 02:07:39,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 02:07:39,898 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 02:07:39,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 02:07:39,914 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 02:07:39,916 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 02:07:39,916 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 02:07:39,917 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c [2020-07-21 02:07:40,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36a9377cb/10725aa62fb44e9086cc055f4db538cc/FLAGdfcf87745 [2020-07-21 02:07:40,542 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 02:07:40,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c [2020-07-21 02:07:40,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36a9377cb/10725aa62fb44e9086cc055f4db538cc/FLAGdfcf87745 [2020-07-21 02:07:40,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36a9377cb/10725aa62fb44e9086cc055f4db538cc [2020-07-21 02:07:40,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 02:07:40,866 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 02:07:40,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 02:07:40,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 02:07:40,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 02:07:40,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:07:40" (1/1) ... [2020-07-21 02:07:40,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2efca680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:40, skipping insertion in model container [2020-07-21 02:07:40,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:07:40" (1/1) ... [2020-07-21 02:07:40,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 02:07:40,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 02:07:41,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 02:07:41,389 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 02:07:41,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 02:07:41,493 INFO L208 MainTranslator]: Completed translation [2020-07-21 02:07:41,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:41 WrapperNode [2020-07-21 02:07:41,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 02:07:41,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 02:07:41,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 02:07:41,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 02:07:41,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:41" (1/1) ... [2020-07-21 02:07:41,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:41" (1/1) ... [2020-07-21 02:07:41,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:41" (1/1) ... [2020-07-21 02:07:41,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:41" (1/1) ... [2020-07-21 02:07:41,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:41" (1/1) ... [2020-07-21 02:07:41,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:41" (1/1) ... [2020-07-21 02:07:41,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:41" (1/1) ... [2020-07-21 02:07:41,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 02:07:41,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 02:07:41,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 02:07:41,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 02:07:41,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 02:07:41,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 02:07:41,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 02:07:41,733 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 02:07:41,733 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-07-21 02:07:41,734 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2020-07-21 02:07:41,735 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2020-07-21 02:07:41,735 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2020-07-21 02:07:41,735 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2020-07-21 02:07:41,735 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2020-07-21 02:07:41,737 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2020-07-21 02:07:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2020-07-21 02:07:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 02:07:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 02:07:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 02:07:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 02:07:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 02:07:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-07-21 02:07:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-21 02:07:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-07-21 02:07:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2020-07-21 02:07:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2020-07-21 02:07:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2020-07-21 02:07:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2020-07-21 02:07:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 02:07:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2020-07-21 02:07:41,745 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2020-07-21 02:07:41,745 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-21 02:07:41,745 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 02:07:41,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 02:07:41,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 02:07:41,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 02:07:41,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 02:07:41,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 02:07:41,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 02:07:41,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 02:07:41,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 02:07:41,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 02:07:41,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 02:07:41,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-21 02:07:41,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 02:07:42,754 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 02:07:42,755 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-21 02:07:42,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:07:42 BoogieIcfgContainer [2020-07-21 02:07:42,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 02:07:42,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 02:07:42,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 02:07:42,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 02:07:42,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:07:40" (1/3) ... [2020-07-21 02:07:42,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c715027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:07:42, skipping insertion in model container [2020-07-21 02:07:42,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:41" (2/3) ... [2020-07-21 02:07:42,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c715027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:07:42, skipping insertion in model container [2020-07-21 02:07:42,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:07:42" (3/3) ... [2020-07-21 02:07:42,770 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_5.c [2020-07-21 02:07:42,779 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 02:07:42,786 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 02:07:42,800 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 02:07:42,822 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 02:07:42,823 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 02:07:42,823 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 02:07:42,823 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 02:07:42,823 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 02:07:42,823 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 02:07:42,824 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 02:07:42,824 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 02:07:42,845 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-07-21 02:07:42,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-21 02:07:42,858 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:42,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:42,860 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:42,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:42,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1328586124, now seen corresponding path program 1 times [2020-07-21 02:07:42,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:42,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133495826] [2020-07-21 02:07:42,878 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:43,205 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:07:43,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:43,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 02:07:43,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:43,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:07:43,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:07:43,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133495826] [2020-07-21 02:07:43,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:07:43,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:07:43,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824297722] [2020-07-21 02:07:43,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:07:43,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:43,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:07:43,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:43,301 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 3 states. [2020-07-21 02:07:43,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:43,404 INFO L93 Difference]: Finished difference Result 264 states and 407 transitions. [2020-07-21 02:07:43,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:07:43,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-07-21 02:07:43,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:43,423 INFO L225 Difference]: With dead ends: 264 [2020-07-21 02:07:43,423 INFO L226 Difference]: Without dead ends: 141 [2020-07-21 02:07:43,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:43,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-07-21 02:07:43,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 121. [2020-07-21 02:07:43,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-21 02:07:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 168 transitions. [2020-07-21 02:07:43,497 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 168 transitions. Word has length 43 [2020-07-21 02:07:43,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:43,498 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 168 transitions. [2020-07-21 02:07:43,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:07:43,498 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 168 transitions. [2020-07-21 02:07:43,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-21 02:07:43,502 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:43,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:43,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:43,719 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:43,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:43,720 INFO L82 PathProgramCache]: Analyzing trace with hash -294008176, now seen corresponding path program 1 times [2020-07-21 02:07:43,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:43,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164316022] [2020-07-21 02:07:43,722 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:43,910 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:07:43,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:43,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 02:07:43,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:43,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:07:43,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:07:44,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 02:07:44,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164316022] [2020-07-21 02:07:44,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:07:44,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 02:07:44,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032606562] [2020-07-21 02:07:44,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 02:07:44,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:44,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 02:07:44,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 02:07:44,013 INFO L87 Difference]: Start difference. First operand 121 states and 168 transitions. Second operand 6 states. [2020-07-21 02:07:44,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:44,265 INFO L93 Difference]: Finished difference Result 308 states and 452 transitions. [2020-07-21 02:07:44,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 02:07:44,266 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-07-21 02:07:44,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:44,271 INFO L225 Difference]: With dead ends: 308 [2020-07-21 02:07:44,272 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 02:07:44,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-07-21 02:07:44,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 02:07:44,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 127. [2020-07-21 02:07:44,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-07-21 02:07:44,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 174 transitions. [2020-07-21 02:07:44,353 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 174 transitions. Word has length 45 [2020-07-21 02:07:44,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:44,354 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 174 transitions. [2020-07-21 02:07:44,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 02:07:44,354 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 174 transitions. [2020-07-21 02:07:44,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-21 02:07:44,360 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:44,361 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:44,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:44,562 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:44,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:44,563 INFO L82 PathProgramCache]: Analyzing trace with hash -375236310, now seen corresponding path program 1 times [2020-07-21 02:07:44,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:44,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894460855] [2020-07-21 02:07:44,564 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:44,845 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:07:44,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:44,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 02:07:44,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-07-21 02:07:44,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:07:44,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894460855] [2020-07-21 02:07:44,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:07:44,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:07:44,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613496683] [2020-07-21 02:07:44,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:07:44,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:44,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:07:44,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:44,871 INFO L87 Difference]: Start difference. First operand 127 states and 174 transitions. Second operand 3 states. [2020-07-21 02:07:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:44,919 INFO L93 Difference]: Finished difference Result 166 states and 223 transitions. [2020-07-21 02:07:44,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:07:44,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-07-21 02:07:44,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:44,922 INFO L225 Difference]: With dead ends: 166 [2020-07-21 02:07:44,922 INFO L226 Difference]: Without dead ends: 131 [2020-07-21 02:07:44,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:44,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-07-21 02:07:44,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-07-21 02:07:44,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-21 02:07:44,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 175 transitions. [2020-07-21 02:07:44,935 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 175 transitions. Word has length 55 [2020-07-21 02:07:44,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:44,935 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 175 transitions. [2020-07-21 02:07:44,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:07:44,936 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 175 transitions. [2020-07-21 02:07:44,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-21 02:07:44,938 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:44,938 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:45,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:45,152 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:45,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:45,153 INFO L82 PathProgramCache]: Analyzing trace with hash -2144510083, now seen corresponding path program 1 times [2020-07-21 02:07:45,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:45,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738914840] [2020-07-21 02:07:45,154 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:45,389 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:07:45,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:45,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 02:07:45,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-21 02:07:45,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:07:45,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738914840] [2020-07-21 02:07:45,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:07:45,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:07:45,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267937455] [2020-07-21 02:07:45,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:07:45,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:45,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:07:45,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:45,413 INFO L87 Difference]: Start difference. First operand 128 states and 175 transitions. Second operand 3 states. [2020-07-21 02:07:45,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:45,431 INFO L93 Difference]: Finished difference Result 180 states and 242 transitions. [2020-07-21 02:07:45,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:07:45,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-07-21 02:07:45,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:45,433 INFO L225 Difference]: With dead ends: 180 [2020-07-21 02:07:45,433 INFO L226 Difference]: Without dead ends: 136 [2020-07-21 02:07:45,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:45,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-21 02:07:45,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 128. [2020-07-21 02:07:45,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-21 02:07:45,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 174 transitions. [2020-07-21 02:07:45,444 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 174 transitions. Word has length 55 [2020-07-21 02:07:45,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:45,445 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 174 transitions. [2020-07-21 02:07:45,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:07:45,445 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 174 transitions. [2020-07-21 02:07:45,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-21 02:07:45,447 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:45,447 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:45,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:45,662 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:45,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:45,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1776861212, now seen corresponding path program 1 times [2020-07-21 02:07:45,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:45,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042469197] [2020-07-21 02:07:45,665 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:45,924 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:07:45,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:45,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 02:07:45,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-21 02:07:45,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:07:45,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042469197] [2020-07-21 02:07:45,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:07:45,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:07:45,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420884249] [2020-07-21 02:07:45,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:07:45,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:45,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:07:45,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:45,949 INFO L87 Difference]: Start difference. First operand 128 states and 174 transitions. Second operand 3 states. [2020-07-21 02:07:45,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:45,979 INFO L93 Difference]: Finished difference Result 190 states and 258 transitions. [2020-07-21 02:07:45,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:07:45,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-07-21 02:07:45,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:45,982 INFO L225 Difference]: With dead ends: 190 [2020-07-21 02:07:45,982 INFO L226 Difference]: Without dead ends: 146 [2020-07-21 02:07:45,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:45,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-07-21 02:07:45,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 129. [2020-07-21 02:07:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-07-21 02:07:45,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 175 transitions. [2020-07-21 02:07:45,993 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 175 transitions. Word has length 56 [2020-07-21 02:07:45,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:45,993 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 175 transitions. [2020-07-21 02:07:45,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:07:45,993 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 175 transitions. [2020-07-21 02:07:45,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-21 02:07:45,995 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:45,995 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:46,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:46,210 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:46,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:46,211 INFO L82 PathProgramCache]: Analyzing trace with hash 450483994, now seen corresponding path program 1 times [2020-07-21 02:07:46,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:46,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455871243] [2020-07-21 02:07:46,211 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:46,635 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 02:07:46,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:46,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 02:07:46,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:46,666 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 02:07:46,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:07:46,733 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 02:07:46,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455871243] [2020-07-21 02:07:46,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:07:46,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 02:07:46,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267517706] [2020-07-21 02:07:46,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 02:07:46,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:46,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 02:07:46,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 02:07:46,736 INFO L87 Difference]: Start difference. First operand 129 states and 175 transitions. Second operand 6 states. [2020-07-21 02:07:46,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:46,835 INFO L93 Difference]: Finished difference Result 176 states and 238 transitions. [2020-07-21 02:07:46,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 02:07:46,837 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-07-21 02:07:46,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:46,838 INFO L225 Difference]: With dead ends: 176 [2020-07-21 02:07:46,839 INFO L226 Difference]: Without dead ends: 141 [2020-07-21 02:07:46,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-07-21 02:07:46,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-07-21 02:07:46,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-07-21 02:07:46,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-07-21 02:07:46,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 193 transitions. [2020-07-21 02:07:46,848 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 193 transitions. Word has length 61 [2020-07-21 02:07:46,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:46,849 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 193 transitions. [2020-07-21 02:07:46,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 02:07:46,849 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 193 transitions. [2020-07-21 02:07:46,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-07-21 02:07:46,850 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:46,851 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:47,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:47,066 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:47,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:47,066 INFO L82 PathProgramCache]: Analyzing trace with hash -374866097, now seen corresponding path program 2 times [2020-07-21 02:07:47,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:47,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551311152] [2020-07-21 02:07:47,067 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:47,843 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 02:07:47,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:47,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 02:07:47,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:47,881 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 02:07:47,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:07:47,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551311152] [2020-07-21 02:07:47,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:07:47,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:07:47,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852430913] [2020-07-21 02:07:47,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:07:47,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:47,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:07:47,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:07:47,885 INFO L87 Difference]: Start difference. First operand 141 states and 193 transitions. Second operand 4 states. [2020-07-21 02:07:47,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:47,956 INFO L93 Difference]: Finished difference Result 185 states and 247 transitions. [2020-07-21 02:07:47,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:07:47,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-07-21 02:07:47,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:47,959 INFO L225 Difference]: With dead ends: 185 [2020-07-21 02:07:47,959 INFO L226 Difference]: Without dead ends: 153 [2020-07-21 02:07:47,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:07:47,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-07-21 02:07:47,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2020-07-21 02:07:47,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-07-21 02:07:47,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 209 transitions. [2020-07-21 02:07:47,979 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 209 transitions. Word has length 73 [2020-07-21 02:07:47,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:47,980 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 209 transitions. [2020-07-21 02:07:47,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:07:47,980 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 209 transitions. [2020-07-21 02:07:47,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-07-21 02:07:47,983 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:47,983 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:48,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:48,197 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:48,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:48,197 INFO L82 PathProgramCache]: Analyzing trace with hash -418943133, now seen corresponding path program 1 times [2020-07-21 02:07:48,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:48,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310578872] [2020-07-21 02:07:48,200 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:49,329 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 02:07:49,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:49,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 02:07:49,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 02:07:49,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:07:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 02:07:49,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310578872] [2020-07-21 02:07:49,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:07:49,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2020-07-21 02:07:49,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862303191] [2020-07-21 02:07:49,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 02:07:49,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:49,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 02:07:49,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-21 02:07:49,508 INFO L87 Difference]: Start difference. First operand 153 states and 209 transitions. Second operand 11 states. [2020-07-21 02:07:50,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:50,131 INFO L93 Difference]: Finished difference Result 260 states and 354 transitions. [2020-07-21 02:07:50,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 02:07:50,132 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2020-07-21 02:07:50,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:50,135 INFO L225 Difference]: With dead ends: 260 [2020-07-21 02:07:50,135 INFO L226 Difference]: Without dead ends: 222 [2020-07-21 02:07:50,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-07-21 02:07:50,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-07-21 02:07:50,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 198. [2020-07-21 02:07:50,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-07-21 02:07:50,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 269 transitions. [2020-07-21 02:07:50,157 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 269 transitions. Word has length 77 [2020-07-21 02:07:50,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:50,158 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 269 transitions. [2020-07-21 02:07:50,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 02:07:50,158 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 269 transitions. [2020-07-21 02:07:50,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-07-21 02:07:50,160 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:50,160 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:50,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:50,376 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:50,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:50,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1212724599, now seen corresponding path program 2 times [2020-07-21 02:07:50,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:50,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320724768] [2020-07-21 02:07:50,378 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:53,119 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:07:53,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:53,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 02:07:53,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:53,187 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 02:07:53,205 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-07-21 02:07:53,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:07:53,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320724768] [2020-07-21 02:07:53,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:07:53,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 02:07:53,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569132733] [2020-07-21 02:07:53,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 02:07:53,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:53,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 02:07:53,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:07:53,208 INFO L87 Difference]: Start difference. First operand 198 states and 269 transitions. Second operand 5 states. [2020-07-21 02:07:53,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:53,246 INFO L93 Difference]: Finished difference Result 267 states and 360 transitions. [2020-07-21 02:07:53,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 02:07:53,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-07-21 02:07:53,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:53,248 INFO L225 Difference]: With dead ends: 267 [2020-07-21 02:07:53,248 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 02:07:53,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 02:07:53,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 02:07:53,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 02:07:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 02:07:53,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 02:07:53,251 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2020-07-21 02:07:53,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:53,251 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 02:07:53,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 02:07:53,252 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 02:07:53,252 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 02:07:53,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:53,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 02:07:53,991 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-07-21 02:07:54,196 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-07-21 02:07:54,380 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-07-21 02:07:54,605 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-07-21 02:07:54,630 INFO L268 CegarLoopResult]: For program point Id_MCDC_100FINAL(lines 418 424) no Hoare annotation was computed. [2020-07-21 02:07:54,630 INFO L268 CegarLoopResult]: For program point Id_MCDC_100EXIT(lines 418 424) no Hoare annotation was computed. [2020-07-21 02:07:54,631 INFO L271 CegarLoopResult]: At program point Id_MCDC_100ENTRY(lines 418 424) the Hoare annotation is: true [2020-07-21 02:07:54,631 INFO L271 CegarLoopResult]: At program point L422(line 422) the Hoare annotation is: true [2020-07-21 02:07:54,631 INFO L268 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-07-21 02:07:54,631 INFO L264 CegarLoopResult]: At program point L403(line 403) the Hoare annotation is: (= 0 Id_MCDC_99_~Id_MCDC_140~0) [2020-07-21 02:07:54,631 INFO L268 CegarLoopResult]: For program point L403-1(line 403) no Hoare annotation was computed. [2020-07-21 02:07:54,631 INFO L271 CegarLoopResult]: At program point Id_MCDC_99ENTRY(lines 398 417) the Hoare annotation is: true [2020-07-21 02:07:54,632 INFO L268 CegarLoopResult]: For program point Id_MCDC_99EXIT(lines 398 417) no Hoare annotation was computed. [2020-07-21 02:07:54,632 INFO L268 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-07-21 02:07:54,632 INFO L268 CegarLoopResult]: For program point L406-2(lines 406 413) no Hoare annotation was computed. [2020-07-21 02:07:54,632 INFO L268 CegarLoopResult]: For program point L404-2(lines 404 414) no Hoare annotation was computed. [2020-07-21 02:07:54,632 INFO L271 CegarLoopResult]: At program point L404-3(lines 404 414) the Hoare annotation is: true [2020-07-21 02:07:54,632 INFO L271 CegarLoopResult]: At program point L404-4(lines 404 414) the Hoare annotation is: true [2020-07-21 02:07:54,632 INFO L268 CegarLoopResult]: For program point Id_MCDC_99FINAL(lines 398 417) no Hoare annotation was computed. [2020-07-21 02:07:54,632 INFO L268 CegarLoopResult]: For program point L221(line 221) no Hoare annotation was computed. [2020-07-21 02:07:54,633 INFO L268 CegarLoopResult]: For program point L213(line 213) no Hoare annotation was computed. [2020-07-21 02:07:54,633 INFO L268 CegarLoopResult]: For program point L209(line 209) no Hoare annotation was computed. [2020-07-21 02:07:54,633 INFO L268 CegarLoopResult]: For program point L209-2(line 209) no Hoare annotation was computed. [2020-07-21 02:07:54,633 INFO L271 CegarLoopResult]: At program point Id_MCDC_89ENTRY(lines 191 246) the Hoare annotation is: true [2020-07-21 02:07:54,633 INFO L268 CegarLoopResult]: For program point Id_MCDC_89EXIT(lines 191 246) no Hoare annotation was computed. [2020-07-21 02:07:54,633 INFO L268 CegarLoopResult]: For program point L234(lines 234 239) no Hoare annotation was computed. [2020-07-21 02:07:54,633 INFO L268 CegarLoopResult]: For program point L234-1(lines 232 244) no Hoare annotation was computed. [2020-07-21 02:07:54,634 INFO L268 CegarLoopResult]: For program point L218(line 218) no Hoare annotation was computed. [2020-07-21 02:07:54,634 INFO L268 CegarLoopResult]: For program point L218-2(line 218) no Hoare annotation was computed. [2020-07-21 02:07:54,634 INFO L268 CegarLoopResult]: For program point L210(line 210) no Hoare annotation was computed. [2020-07-21 02:07:54,634 INFO L268 CegarLoopResult]: For program point L202(lines 202 205) no Hoare annotation was computed. [2020-07-21 02:07:54,634 INFO L268 CegarLoopResult]: For program point Id_MCDC_89FINAL(lines 191 246) no Hoare annotation was computed. [2020-07-21 02:07:54,634 INFO L268 CegarLoopResult]: For program point L227(lines 227 230) no Hoare annotation was computed. [2020-07-21 02:07:54,634 INFO L268 CegarLoopResult]: For program point L219(line 219) no Hoare annotation was computed. [2020-07-21 02:07:54,634 INFO L268 CegarLoopResult]: For program point L215(line 215) no Hoare annotation was computed. [2020-07-21 02:07:54,635 INFO L268 CegarLoopResult]: For program point L215-2(line 215) no Hoare annotation was computed. [2020-07-21 02:07:54,635 INFO L271 CegarLoopResult]: At program point L207(lines 207 223) the Hoare annotation is: true [2020-07-21 02:07:54,635 INFO L268 CegarLoopResult]: For program point L232(line 232) no Hoare annotation was computed. [2020-07-21 02:07:54,635 INFO L268 CegarLoopResult]: For program point L232-2(line 232) no Hoare annotation was computed. [2020-07-21 02:07:54,635 INFO L268 CegarLoopResult]: For program point L232-3(line 232) no Hoare annotation was computed. [2020-07-21 02:07:54,635 INFO L268 CegarLoopResult]: For program point L232-5(lines 232 244) no Hoare annotation was computed. [2020-07-21 02:07:54,635 INFO L268 CegarLoopResult]: For program point L224-1(lines 224 231) no Hoare annotation was computed. [2020-07-21 02:07:54,636 INFO L271 CegarLoopResult]: At program point L224-3(lines 224 231) the Hoare annotation is: true [2020-07-21 02:07:54,636 INFO L268 CegarLoopResult]: For program point L224-4(lines 224 231) no Hoare annotation was computed. [2020-07-21 02:07:54,636 INFO L268 CegarLoopResult]: For program point L216(line 216) no Hoare annotation was computed. [2020-07-21 02:07:54,636 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-07-21 02:07:54,636 INFO L268 CegarLoopResult]: For program point L212-2(line 212) no Hoare annotation was computed. [2020-07-21 02:07:54,636 INFO L268 CegarLoopResult]: For program point L200(lines 200 206) no Hoare annotation was computed. [2020-07-21 02:07:54,636 INFO L268 CegarLoopResult]: For program point L200-2(lines 200 206) no Hoare annotation was computed. [2020-07-21 02:07:54,637 INFO L268 CegarLoopResult]: For program point L196(lines 196 199) no Hoare annotation was computed. [2020-07-21 02:07:54,637 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 425 456) the Hoare annotation is: true [2020-07-21 02:07:54,637 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 425 456) no Hoare annotation was computed. [2020-07-21 02:07:54,637 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 425 456) no Hoare annotation was computed. [2020-07-21 02:07:54,637 INFO L271 CegarLoopResult]: At program point L455(line 455) the Hoare annotation is: true [2020-07-21 02:07:54,637 INFO L268 CegarLoopResult]: For program point L450(lines 450 453) no Hoare annotation was computed. [2020-07-21 02:07:54,637 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-21 02:07:54,637 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 02:07:54,638 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-21 02:07:54,638 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-21 02:07:54,638 INFO L268 CegarLoopResult]: For program point L386-1(line 386) no Hoare annotation was computed. [2020-07-21 02:07:54,638 INFO L268 CegarLoopResult]: For program point L374-2(lines 374 391) no Hoare annotation was computed. [2020-07-21 02:07:54,638 INFO L271 CegarLoopResult]: At program point L374-3(lines 374 391) the Hoare annotation is: true [2020-07-21 02:07:54,638 INFO L268 CegarLoopResult]: For program point L374-4(lines 374 391) no Hoare annotation was computed. [2020-07-21 02:07:54,638 INFO L271 CegarLoopResult]: At program point Id_MCDC_97ENTRY(lines 329 397) the Hoare annotation is: true [2020-07-21 02:07:54,639 INFO L268 CegarLoopResult]: For program point Id_MCDC_97EXIT(lines 329 397) no Hoare annotation was computed. [2020-07-21 02:07:54,639 INFO L268 CegarLoopResult]: For program point L387(lines 387 390) no Hoare annotation was computed. [2020-07-21 02:07:54,639 INFO L268 CegarLoopResult]: For program point L354(lines 354 395) no Hoare annotation was computed. [2020-07-21 02:07:54,639 INFO L268 CegarLoopResult]: For program point L350-2(lines 350 353) no Hoare annotation was computed. [2020-07-21 02:07:54,639 INFO L264 CegarLoopResult]: At program point L350-3(lines 350 353) the Hoare annotation is: (= 6144 Id_MCDC_97_~Id_MCDC_123~0) [2020-07-21 02:07:54,639 INFO L268 CegarLoopResult]: For program point L350-4(lines 330 397) no Hoare annotation was computed. [2020-07-21 02:07:54,639 INFO L271 CegarLoopResult]: At program point L363(line 363) the Hoare annotation is: true [2020-07-21 02:07:54,640 INFO L268 CegarLoopResult]: For program point L363-1(lines 363 366) no Hoare annotation was computed. [2020-07-21 02:07:54,640 INFO L268 CegarLoopResult]: For program point Id_MCDC_97FINAL(lines 329 397) no Hoare annotation was computed. [2020-07-21 02:07:54,640 INFO L271 CegarLoopResult]: At program point L359(line 359) the Hoare annotation is: true [2020-07-21 02:07:54,640 INFO L268 CegarLoopResult]: For program point L359-1(lines 359 362) no Hoare annotation was computed. [2020-07-21 02:07:54,640 INFO L271 CegarLoopResult]: At program point L376(line 376) the Hoare annotation is: true [2020-07-21 02:07:54,640 INFO L268 CegarLoopResult]: For program point L376-1(lines 376 379) no Hoare annotation was computed. [2020-07-21 02:07:54,640 INFO L268 CegarLoopResult]: For program point L356-2(lines 356 394) no Hoare annotation was computed. [2020-07-21 02:07:54,641 INFO L271 CegarLoopResult]: At program point L356-3(lines 356 394) the Hoare annotation is: true [2020-07-21 02:07:54,641 INFO L271 CegarLoopResult]: At program point L369(line 369) the Hoare annotation is: true [2020-07-21 02:07:54,641 INFO L268 CegarLoopResult]: For program point L369-1(lines 369 372) no Hoare annotation was computed. [2020-07-21 02:07:54,641 INFO L271 CegarLoopResult]: At program point L386(line 386) the Hoare annotation is: true [2020-07-21 02:07:54,641 INFO L271 CegarLoopResult]: At program point Id_MCDC_95ENTRY(lines 278 297) the Hoare annotation is: true [2020-07-21 02:07:54,641 INFO L268 CegarLoopResult]: For program point Id_MCDC_95EXIT(lines 278 297) no Hoare annotation was computed. [2020-07-21 02:07:54,641 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-07-21 02:07:54,642 INFO L264 CegarLoopResult]: At program point L294(line 294) the Hoare annotation is: (and (or (= 4 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4))) (or (< (mod (+ Id_MCDC_95_~Id_MCDC_93 4294967295) 4294967296) 2) (< 2 (mod (+ Id_MCDC_95_~Id_MCDC_93 4294967295) 4294967296)) (and (not (< (mod (+ |Id_MCDC_95_#in~Id_MCDC_93| 4294967295) 4294967296) 2)) (not (< 2 (mod (+ |Id_MCDC_95_#in~Id_MCDC_93| 4294967295) 4294967296))))) (or (= 3 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 3))) (or (< 2 (mod Id_MCDC_95_~Id_MCDC_93 4294967296)) (and (not (< 2 (mod |Id_MCDC_95_#in~Id_MCDC_93| 4294967296))) (not (< (mod |Id_MCDC_95_#in~Id_MCDC_93| 4294967296) 2))))) [2020-07-21 02:07:54,642 INFO L264 CegarLoopResult]: At program point L296-2(line 296) the Hoare annotation is: (and (or (= 4 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4))) (or (= 3 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 3))) (or (and (not (< (mod (+ |Id_MCDC_95_#in~Id_MCDC_93| 4294967295) 4294967296) 2)) (not (< 2 (mod (+ |Id_MCDC_95_#in~Id_MCDC_93| 4294967295) 4294967296)))) (and |Id_MCDC_95_#t~short23| (or (< (mod (+ Id_MCDC_95_~Id_MCDC_93 4294967295) 4294967296) 2) (< 2 (mod (+ Id_MCDC_95_~Id_MCDC_93 4294967295) 4294967296))))) (or (and |Id_MCDC_95_#t~short23| (< 2 (mod Id_MCDC_95_~Id_MCDC_93 4294967296))) (and (not (< 2 (mod |Id_MCDC_95_#in~Id_MCDC_93| 4294967296))) (not (< (mod |Id_MCDC_95_#in~Id_MCDC_93| 4294967296) 2))))) [2020-07-21 02:07:54,642 INFO L268 CegarLoopResult]: For program point L294-1(line 294) no Hoare annotation was computed. [2020-07-21 02:07:54,642 INFO L268 CegarLoopResult]: For program point L296-3(line 296) no Hoare annotation was computed. [2020-07-21 02:07:54,643 INFO L264 CegarLoopResult]: At program point L288(line 288) the Hoare annotation is: (let ((.cse0 (< 2 (mod Id_MCDC_95_~Id_MCDC_93 4294967296)))) (and (or (and (not (< (mod (+ |Id_MCDC_95_#in~Id_MCDC_93| 4294967295) 4294967296) 2)) (not (< 2 (mod (+ |Id_MCDC_95_#in~Id_MCDC_93| 4294967295) 4294967296)))) (and (or (< 2 (mod (+ Id_MCDC_95_~Id_MCDC_93 4294967295) 4294967296)) (< (mod (+ Id_MCDC_95_~Id_MCDC_93 4294967295) 4294967296) 2)) (or .cse0 (< (mod Id_MCDC_95_~Id_MCDC_93 4294967296) 2)))) (or (= 4 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4))) (or (and (not (< (mod |Id_MCDC_95_#in~Id_MCDC_93| 4294967296) 2)) (not (< 2 (mod |Id_MCDC_95_#in~Id_MCDC_93| 4294967296)))) .cse0) (or (= 3 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 3))))) [2020-07-21 02:07:54,643 INFO L268 CegarLoopResult]: For program point L288-1(line 288) no Hoare annotation was computed. [2020-07-21 02:07:54,643 INFO L268 CegarLoopResult]: For program point L286(lines 286 293) no Hoare annotation was computed. [2020-07-21 02:07:54,643 INFO L268 CegarLoopResult]: For program point L286-2(lines 286 293) no Hoare annotation was computed. [2020-07-21 02:07:54,643 INFO L268 CegarLoopResult]: For program point L282(lines 282 285) no Hoare annotation was computed. [2020-07-21 02:07:54,643 INFO L264 CegarLoopResult]: At program point L295(line 295) the Hoare annotation is: (and (or (< 2 (mod (+ Id_MCDC_95_~Id_MCDC_93 4294967295) 4294967296)) (and (not (< (mod (+ |Id_MCDC_95_#in~Id_MCDC_93| 4294967295) 4294967296) 2)) (not (< 2 (mod (+ |Id_MCDC_95_#in~Id_MCDC_93| 4294967295) 4294967296)))) (< (mod (+ Id_MCDC_95_~Id_MCDC_93 4294967295) 4294967296) 2)) (or (and (not (< 2 (mod |Id_MCDC_95_#in~Id_MCDC_93| 4294967296))) (not (< (mod |Id_MCDC_95_#in~Id_MCDC_93| 4294967296) 2))) (< 2 (mod Id_MCDC_95_~Id_MCDC_93 4294967296))) (or (= 4 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4))) (or (= 3 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 3)))) [2020-07-21 02:07:54,644 INFO L268 CegarLoopResult]: For program point L295-1(line 295) no Hoare annotation was computed. [2020-07-21 02:07:54,644 INFO L268 CegarLoopResult]: For program point Id_MCDC_95FINAL(lines 278 297) no Hoare annotation was computed. [2020-07-21 02:07:54,644 INFO L268 CegarLoopResult]: For program point L316(lines 316 321) no Hoare annotation was computed. [2020-07-21 02:07:54,644 INFO L268 CegarLoopResult]: For program point L316-1(lines 314 326) no Hoare annotation was computed. [2020-07-21 02:07:54,644 INFO L268 CegarLoopResult]: For program point L314(line 314) no Hoare annotation was computed. [2020-07-21 02:07:54,644 INFO L268 CegarLoopResult]: For program point L314-2(line 314) no Hoare annotation was computed. [2020-07-21 02:07:54,644 INFO L268 CegarLoopResult]: For program point L314-3(line 314) no Hoare annotation was computed. [2020-07-21 02:07:54,645 INFO L268 CegarLoopResult]: For program point L314-5(lines 314 326) no Hoare annotation was computed. [2020-07-21 02:07:54,645 INFO L268 CegarLoopResult]: For program point L306-1(lines 306 313) no Hoare annotation was computed. [2020-07-21 02:07:54,645 INFO L271 CegarLoopResult]: At program point L306-3(lines 306 313) the Hoare annotation is: true [2020-07-21 02:07:54,645 INFO L268 CegarLoopResult]: For program point L302(lines 302 305) no Hoare annotation was computed. [2020-07-21 02:07:54,647 INFO L268 CegarLoopResult]: For program point L306-4(lines 306 313) no Hoare annotation was computed. [2020-07-21 02:07:54,648 INFO L268 CegarLoopResult]: For program point Id_MCDC_96FINAL(lines 298 328) no Hoare annotation was computed. [2020-07-21 02:07:54,648 INFO L268 CegarLoopResult]: For program point L309(lines 309 312) no Hoare annotation was computed. [2020-07-21 02:07:54,648 INFO L271 CegarLoopResult]: At program point Id_MCDC_96ENTRY(lines 298 328) the Hoare annotation is: true [2020-07-21 02:07:54,648 INFO L268 CegarLoopResult]: For program point Id_MCDC_96EXIT(lines 298 328) no Hoare annotation was computed. [2020-07-21 02:07:54,648 INFO L268 CegarLoopResult]: For program point L253(lines 253 267) no Hoare annotation was computed. [2020-07-21 02:07:54,648 INFO L271 CegarLoopResult]: At program point Id_MCDC_92ENTRY(lines 247 277) the Hoare annotation is: true [2020-07-21 02:07:54,648 INFO L268 CegarLoopResult]: For program point Id_MCDC_92EXIT(lines 247 277) no Hoare annotation was computed. [2020-07-21 02:07:54,649 INFO L268 CegarLoopResult]: For program point Id_MCDC_92FINAL(lines 247 277) no Hoare annotation was computed. [2020-07-21 02:07:54,650 INFO L271 CegarLoopResult]: At program point L270(line 270) the Hoare annotation is: true [2020-07-21 02:07:54,650 INFO L268 CegarLoopResult]: For program point L270-1(line 270) no Hoare annotation was computed. [2020-07-21 02:07:54,650 INFO L268 CegarLoopResult]: For program point L268-1(lines 248 277) no Hoare annotation was computed. [2020-07-21 02:07:54,650 INFO L268 CegarLoopResult]: For program point L268-2(lines 268 275) no Hoare annotation was computed. [2020-07-21 02:07:54,650 INFO L268 CegarLoopResult]: For program point L259(lines 259 267) no Hoare annotation was computed. [2020-07-21 02:07:54,650 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 02:07:54,651 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 02:07:54,651 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 02:07:54,651 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 02:07:54,651 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 02:07:54,651 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 02:07:54,651 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 02:07:54,651 INFO L268 CegarLoopResult]: For program point avoid_zeroEXIT(lines 7 13) no Hoare annotation was computed. [2020-07-21 02:07:54,651 INFO L268 CegarLoopResult]: For program point L9(lines 9 12) no Hoare annotation was computed. [2020-07-21 02:07:54,652 INFO L268 CegarLoopResult]: For program point L9-2(lines 7 13) no Hoare annotation was computed. [2020-07-21 02:07:54,652 INFO L271 CegarLoopResult]: At program point avoid_zeroENTRY(lines 7 13) the Hoare annotation is: true [2020-07-21 02:07:54,652 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 457 464) the Hoare annotation is: true [2020-07-21 02:07:54,652 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 02:07:54,652 INFO L268 CegarLoopResult]: For program point L459(lines 459 462) no Hoare annotation was computed. [2020-07-21 02:07:54,652 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 457 464) no Hoare annotation was computed. [2020-07-21 02:07:54,652 INFO L268 CegarLoopResult]: For program point L459-2(lines 457 464) no Hoare annotation was computed. [2020-07-21 02:07:54,653 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 461) no Hoare annotation was computed. [2020-07-21 02:07:54,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:07:54 BoogieIcfgContainer [2020-07-21 02:07:54,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 02:07:54,681 INFO L168 Benchmark]: Toolchain (without parser) took 13815.17 ms. Allocated memory was 145.2 MB in the beginning and 306.2 MB in the end (delta: 161.0 MB). Free memory was 102.1 MB in the beginning and 213.6 MB in the end (delta: -111.5 MB). Peak memory consumption was 155.2 MB. Max. memory is 7.1 GB. [2020-07-21 02:07:54,683 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 02:07:54,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 626.31 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.7 MB in the beginning and 173.9 MB in the end (delta: -72.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-07-21 02:07:54,684 INFO L168 Benchmark]: Boogie Preprocessor took 122.63 ms. Allocated memory is still 202.9 MB. Free memory was 173.9 MB in the beginning and 169.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-07-21 02:07:54,691 INFO L168 Benchmark]: RCFGBuilder took 1143.08 ms. Allocated memory is still 202.9 MB. Free memory was 169.6 MB in the beginning and 107.1 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. [2020-07-21 02:07:54,697 INFO L168 Benchmark]: TraceAbstraction took 11915.72 ms. Allocated memory was 202.9 MB in the beginning and 306.2 MB in the end (delta: 103.3 MB). Free memory was 107.1 MB in the beginning and 213.6 MB in the end (delta: -106.5 MB). Peak memory consumption was 102.5 MB. Max. memory is 7.1 GB. [2020-07-21 02:07:54,702 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 626.31 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.7 MB in the beginning and 173.9 MB in the end (delta: -72.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.63 ms. Allocated memory is still 202.9 MB. Free memory was 173.9 MB in the beginning and 169.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1143.08 ms. Allocated memory is still 202.9 MB. Free memory was 169.6 MB in the beginning and 107.1 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11915.72 ms. Allocated memory was 202.9 MB in the beginning and 306.2 MB in the end (delta: 103.3 MB). Free memory was 107.1 MB in the beginning and 213.6 MB in the end (delta: -106.5 MB). Peak memory consumption was 102.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 461]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 207]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 224]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 404]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 374]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 350]: Loop Invariant Derived loop invariant: 6144 == Id_MCDC_123 - InvariantResult [Line: 306]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 356]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 133 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.6s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1614 SDtfs, 350 SDslu, 3418 SDs, 0 SdLazy, 333 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 732 GetRequests, 692 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 148 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 238 PreInvPairs, 279 NumberOfFragments, 324 HoareAnnotationTreeSize, 238 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 34 FomulaSimplificationsInter, 416 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 5.5s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 546 NumberOfCodeBlocks, 376 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 717 ConstructedInterpolants, 0 QuantifiedInterpolants, 57355 SizeOfPredicates, 15 NumberOfNonLiveVariables, 5208 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 271/281 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...