/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_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 02:07:09,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 02:07:09,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 02:07:09,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 02:07:09,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 02:07:09,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 02:07:09,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 02:07:09,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 02:07:09,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 02:07:09,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 02:07:09,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 02:07:09,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 02:07:09,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 02:07:09,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 02:07:09,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 02:07:09,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 02:07:09,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 02:07:09,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 02:07:09,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 02:07:09,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 02:07:09,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 02:07:09,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 02:07:09,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 02:07:09,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 02:07:09,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 02:07:09,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 02:07:09,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 02:07:09,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 02:07:09,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 02:07:09,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-21 02:07:09,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 02:07:09,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 02:07:09,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 02:07:09,624 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 02:07:09,655 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 02:07:09,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 02:07:09,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 02:07:09,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 02:07:09,659 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 02:07:09,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 02:07:09,659 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 02:07:09,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 02:07:09,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 02:07:09,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 02:07:09,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 02:07:09,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 02:07:09,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 02:07:09,662 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 02:07:09,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 02:07:09,662 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 02:07:09,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 02:07:09,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 02:07:09,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 02:07:09,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 02:07:09,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 02:07:09,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 02:07:09,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 02:07:09,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 02:07:09,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 02:07:09,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 02:07:09,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:09,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 02:07:09,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 02:07:09,665 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 02:07:09,953 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 02:07:09,968 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 02:07:09,972 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 02:07:09,973 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 02:07:09,974 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 02:07:09,975 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2020-07-21 02:07:10,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc492791/9a0d3606b59d4a8f8909af4a3943c2f3/FLAG33e5bbb39 [2020-07-21 02:07:10,606 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 02:07:10,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_2.c [2020-07-21 02:07:10,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc492791/9a0d3606b59d4a8f8909af4a3943c2f3/FLAG33e5bbb39 [2020-07-21 02:07:10,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc492791/9a0d3606b59d4a8f8909af4a3943c2f3 [2020-07-21 02:07:10,887 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 02:07:10,890 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 02:07:10,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 02:07:10,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 02:07:10,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 02:07:10,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:07:10" (1/1) ... [2020-07-21 02:07:10,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4240d646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:10, skipping insertion in model container [2020-07-21 02:07:10,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:07:10" (1/1) ... [2020-07-21 02:07:10,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 02:07:10,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 02:07:11,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 02:07:11,378 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 02:07:11,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 02:07:11,529 INFO L208 MainTranslator]: Completed translation [2020-07-21 02:07:11,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:11 WrapperNode [2020-07-21 02:07:11,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 02:07:11,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 02:07:11,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 02:07:11,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 02:07:11,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:11" (1/1) ... [2020-07-21 02:07:11,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:11" (1/1) ... [2020-07-21 02:07:11,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:11" (1/1) ... [2020-07-21 02:07:11,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:11" (1/1) ... [2020-07-21 02:07:11,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:11" (1/1) ... [2020-07-21 02:07:11,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:11" (1/1) ... [2020-07-21 02:07:11,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:11" (1/1) ... [2020-07-21 02:07:11,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 02:07:11,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 02:07:11,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 02:07:11,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 02:07:11,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:11" (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 02:07:11,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 02:07:11,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 02:07:11,761 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 02:07:11,761 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-07-21 02:07:11,761 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2020-07-21 02:07:11,762 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2020-07-21 02:07:11,762 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2020-07-21 02:07:11,762 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2020-07-21 02:07:11,762 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2020-07-21 02:07:11,763 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2020-07-21 02:07:11,764 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2020-07-21 02:07:11,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 02:07:11,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 02:07:11,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 02:07:11,765 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 02:07:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 02:07:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-07-21 02:07:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-21 02:07:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-07-21 02:07:11,766 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2020-07-21 02:07:11,767 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2020-07-21 02:07:11,768 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2020-07-21 02:07:11,768 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2020-07-21 02:07:11,768 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 02:07:11,770 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2020-07-21 02:07:11,771 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2020-07-21 02:07:11,771 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-21 02:07:11,772 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 02:07:11,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 02:07:11,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 02:07:11,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 02:07:11,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 02:07:11,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 02:07:11,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 02:07:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 02:07:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 02:07:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 02:07:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 02:07:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-21 02:07:11,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 02:07:12,899 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 02:07:12,899 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-21 02:07:12,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:07:12 BoogieIcfgContainer [2020-07-21 02:07:12,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 02:07:12,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 02:07:12,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 02:07:12,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 02:07:12,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:07:10" (1/3) ... [2020-07-21 02:07:12,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4b63a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:07:12, skipping insertion in model container [2020-07-21 02:07:12,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:07:11" (2/3) ... [2020-07-21 02:07:12,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4b63a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:07:12, skipping insertion in model container [2020-07-21 02:07:12,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:07:12" (3/3) ... [2020-07-21 02:07:12,916 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_2.c [2020-07-21 02:07:12,928 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 02:07:12,937 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 02:07:12,954 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 02:07:12,981 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 02:07:12,982 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 02:07:12,982 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 02:07:12,982 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 02:07:12,982 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 02:07:12,983 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 02:07:12,983 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 02:07:12,983 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 02:07:13,008 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-07-21 02:07:13,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-21 02:07:13,021 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:13,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:13,023 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:13,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:13,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1652927245, now seen corresponding path program 1 times [2020-07-21 02:07:13,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:13,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555898946] [2020-07-21 02:07:13,040 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 02:07:13,309 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:07:13,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:13,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 02:07:13,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:13,372 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 02:07:13,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:07:13,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555898946] [2020-07-21 02:07:13,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:07:13,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:07:13,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114393937] [2020-07-21 02:07:13,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:07:13,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:13,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:07:13,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:13,406 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2020-07-21 02:07:13,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:13,498 INFO L93 Difference]: Finished difference Result 262 states and 403 transitions. [2020-07-21 02:07:13,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:07:13,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-07-21 02:07:13,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:13,516 INFO L225 Difference]: With dead ends: 262 [2020-07-21 02:07:13,517 INFO L226 Difference]: Without dead ends: 140 [2020-07-21 02:07:13,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:13,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-07-21 02:07:13,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 120. [2020-07-21 02:07:13,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-21 02:07:13,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 166 transitions. [2020-07-21 02:07:13,591 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 166 transitions. Word has length 39 [2020-07-21 02:07:13,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:13,592 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 166 transitions. [2020-07-21 02:07:13,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:07:13,592 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 166 transitions. [2020-07-21 02:07:13,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-21 02:07:13,596 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:13,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:13,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:13,812 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:13,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:13,813 INFO L82 PathProgramCache]: Analyzing trace with hash -296822387, now seen corresponding path program 1 times [2020-07-21 02:07:13,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:13,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407696748] [2020-07-21 02:07:13,814 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 02:07:14,027 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:07:14,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:14,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 02:07:14,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:14,056 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 02:07:14,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:07:14,115 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 02:07:14,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407696748] [2020-07-21 02:07:14,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:07:14,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 02:07:14,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660611788] [2020-07-21 02:07:14,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 02:07:14,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:14,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 02:07:14,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 02:07:14,121 INFO L87 Difference]: Start difference. First operand 120 states and 166 transitions. Second operand 6 states. [2020-07-21 02:07:14,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:14,419 INFO L93 Difference]: Finished difference Result 306 states and 448 transitions. [2020-07-21 02:07:14,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 02:07:14,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-07-21 02:07:14,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:14,444 INFO L225 Difference]: With dead ends: 306 [2020-07-21 02:07:14,444 INFO L226 Difference]: Without dead ends: 202 [2020-07-21 02:07:14,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 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 02:07:14,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-07-21 02:07:14,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 126. [2020-07-21 02:07:14,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-21 02:07:14,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 172 transitions. [2020-07-21 02:07:14,482 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 172 transitions. Word has length 41 [2020-07-21 02:07:14,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:14,482 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 172 transitions. [2020-07-21 02:07:14,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 02:07:14,483 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 172 transitions. [2020-07-21 02:07:14,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 02:07:14,485 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:14,488 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] [2020-07-21 02:07:14,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:14,703 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:14,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:14,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1573985069, now seen corresponding path program 2 times [2020-07-21 02:07:14,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:14,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798235930] [2020-07-21 02:07:14,704 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 02:07:14,886 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:07:14,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:14,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 02:07:14,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:14,912 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 02:07:14,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:07:14,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798235930] [2020-07-21 02:07:14,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:07:14,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:07:14,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512384101] [2020-07-21 02:07:14,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:07:14,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:14,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:07:14,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:14,915 INFO L87 Difference]: Start difference. First operand 126 states and 172 transitions. Second operand 3 states. [2020-07-21 02:07:14,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:14,937 INFO L93 Difference]: Finished difference Result 176 states and 236 transitions. [2020-07-21 02:07:14,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:07:14,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 02:07:14,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:14,940 INFO L225 Difference]: With dead ends: 176 [2020-07-21 02:07:14,940 INFO L226 Difference]: Without dead ends: 134 [2020-07-21 02:07:14,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 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 02:07:14,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-07-21 02:07:14,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 126. [2020-07-21 02:07:14,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-21 02:07:14,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 171 transitions. [2020-07-21 02:07:14,952 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 171 transitions. Word has length 47 [2020-07-21 02:07:14,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:14,953 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 171 transitions. [2020-07-21 02:07:14,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:07:14,953 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 171 transitions. [2020-07-21 02:07:14,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-21 02:07:14,955 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:14,955 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] [2020-07-21 02:07:15,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:15,170 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:15,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:15,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1406882848, now seen corresponding path program 1 times [2020-07-21 02:07:15,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:15,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248918213] [2020-07-21 02:07:15,172 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 02:07:15,346 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 02:07:15,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:15,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 02:07:15,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 02:07:15,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:07:15,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248918213] [2020-07-21 02:07:15,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:07:15,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:07:15,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735139277] [2020-07-21 02:07:15,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:07:15,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:15,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:07:15,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:15,367 INFO L87 Difference]: Start difference. First operand 126 states and 171 transitions. Second operand 3 states. [2020-07-21 02:07:15,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:15,392 INFO L93 Difference]: Finished difference Result 186 states and 252 transitions. [2020-07-21 02:07:15,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:07:15,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-07-21 02:07:15,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:15,394 INFO L225 Difference]: With dead ends: 186 [2020-07-21 02:07:15,394 INFO L226 Difference]: Without dead ends: 144 [2020-07-21 02:07:15,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 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 02:07:15,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-07-21 02:07:15,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 127. [2020-07-21 02:07:15,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-07-21 02:07:15,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 172 transitions. [2020-07-21 02:07:15,406 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 172 transitions. Word has length 48 [2020-07-21 02:07:15,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:15,406 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 172 transitions. [2020-07-21 02:07:15,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:07:15,406 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 172 transitions. [2020-07-21 02:07:15,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-21 02:07:15,409 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:15,409 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:15,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:15,624 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:15,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:15,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1601345574, now seen corresponding path program 1 times [2020-07-21 02:07:15,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:15,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399883377] [2020-07-21 02:07:15,627 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 02:07:16,068 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 02:07:16,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:16,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 02:07:16,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:16,093 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 02:07:16,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:07:16,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399883377] [2020-07-21 02:07:16,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:07:16,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 02:07:16,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318802782] [2020-07-21 02:07:16,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 02:07:16,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:16,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 02:07:16,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 02:07:16,096 INFO L87 Difference]: Start difference. First operand 127 states and 172 transitions. Second operand 3 states. [2020-07-21 02:07:16,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:16,135 INFO L93 Difference]: Finished difference Result 165 states and 219 transitions. [2020-07-21 02:07:16,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 02:07:16,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-07-21 02:07:16,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:16,141 INFO L225 Difference]: With dead ends: 165 [2020-07-21 02:07:16,141 INFO L226 Difference]: Without dead ends: 131 [2020-07-21 02:07:16,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 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 02:07:16,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-07-21 02:07:16,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-07-21 02:07:16,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-21 02:07:16,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 173 transitions. [2020-07-21 02:07:16,164 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 173 transitions. Word has length 53 [2020-07-21 02:07:16,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:16,168 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 173 transitions. [2020-07-21 02:07:16,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 02:07:16,169 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 173 transitions. [2020-07-21 02:07:16,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 02:07:16,170 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:16,170 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 02:07:16,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:16,388 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:16,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:16,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1437146227, now seen corresponding path program 1 times [2020-07-21 02:07:16,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:16,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522586349] [2020-07-21 02:07:16,390 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 02:07:16,804 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 02:07:16,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:16,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 02:07:16,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:16,849 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 02:07:16,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:07:16,907 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 02:07:16,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522586349] [2020-07-21 02:07:16,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:07:16,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 02:07:16,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407411793] [2020-07-21 02:07:16,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 02:07:16,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:16,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 02:07:16,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 02:07:16,910 INFO L87 Difference]: Start difference. First operand 128 states and 173 transitions. Second operand 6 states. [2020-07-21 02:07:17,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:17,012 INFO L93 Difference]: Finished difference Result 174 states and 234 transitions. [2020-07-21 02:07:17,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 02:07:17,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-21 02:07:17,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:17,018 INFO L225 Difference]: With dead ends: 174 [2020-07-21 02:07:17,018 INFO L226 Difference]: Without dead ends: 140 [2020-07-21 02:07:17,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 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 02:07:17,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-07-21 02:07:17,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-07-21 02:07:17,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-21 02:07:17,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 191 transitions. [2020-07-21 02:07:17,034 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 191 transitions. Word has length 57 [2020-07-21 02:07:17,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:17,034 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 191 transitions. [2020-07-21 02:07:17,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 02:07:17,035 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 191 transitions. [2020-07-21 02:07:17,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-07-21 02:07:17,036 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:17,036 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] [2020-07-21 02:07:17,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:17,243 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:17,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:17,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1396605122, now seen corresponding path program 2 times [2020-07-21 02:07:17,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:17,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473552310] [2020-07-21 02:07:17,245 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 02:07:17,794 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 02:07:17,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:17,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 02:07:17,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:17,832 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 02:07:17,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:07:17,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473552310] [2020-07-21 02:07:17,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:07:17,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:07:17,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907255224] [2020-07-21 02:07:17,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:07:17,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:17,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:07:17,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:07:17,836 INFO L87 Difference]: Start difference. First operand 140 states and 191 transitions. Second operand 4 states. [2020-07-21 02:07:17,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:17,884 INFO L93 Difference]: Finished difference Result 180 states and 238 transitions. [2020-07-21 02:07:17,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:07:17,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-07-21 02:07:17,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:17,886 INFO L225 Difference]: With dead ends: 180 [2020-07-21 02:07:17,890 INFO L226 Difference]: Without dead ends: 147 [2020-07-21 02:07:17,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 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 02:07:17,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-07-21 02:07:17,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2020-07-21 02:07:17,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-07-21 02:07:17,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 199 transitions. [2020-07-21 02:07:17,902 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 199 transitions. Word has length 69 [2020-07-21 02:07:17,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:17,902 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 199 transitions. [2020-07-21 02:07:17,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:07:17,902 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 199 transitions. [2020-07-21 02:07:17,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-07-21 02:07:17,904 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:17,904 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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 02:07:18,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:18,118 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:18,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:18,119 INFO L82 PathProgramCache]: Analyzing trace with hash 950165009, now seen corresponding path program 1 times [2020-07-21 02:07:18,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:18,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496480775] [2020-07-21 02:07:18,120 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 02:07:18,763 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 02:07:18,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:18,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 02:07:18,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 02:07:18,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 02:07:18,955 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 02:07:18,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496480775] [2020-07-21 02:07:18,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 02:07:18,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-07-21 02:07:18,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604880369] [2020-07-21 02:07:18,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 02:07:18,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:18,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 02:07:18,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-21 02:07:18,960 INFO L87 Difference]: Start difference. First operand 147 states and 199 transitions. Second operand 9 states. [2020-07-21 02:07:19,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:19,190 INFO L93 Difference]: Finished difference Result 195 states and 256 transitions. [2020-07-21 02:07:19,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 02:07:19,191 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-07-21 02:07:19,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:19,193 INFO L225 Difference]: With dead ends: 195 [2020-07-21 02:07:19,193 INFO L226 Difference]: Without dead ends: 161 [2020-07-21 02:07:19,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-07-21 02:07:19,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-07-21 02:07:19,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-07-21 02:07:19,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-21 02:07:19,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 215 transitions. [2020-07-21 02:07:19,202 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 215 transitions. Word has length 75 [2020-07-21 02:07:19,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:19,203 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 215 transitions. [2020-07-21 02:07:19,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 02:07:19,203 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 215 transitions. [2020-07-21 02:07:19,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-07-21 02:07:19,205 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 02:07:19,205 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] [2020-07-21 02:07:19,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:19,413 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 02:07:19,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 02:07:19,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1150515746, now seen corresponding path program 1 times [2020-07-21 02:07:19,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 02:07:19,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910378048] [2020-07-21 02:07:19,415 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 02:07:21,404 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 02:07:21,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 02:07:21,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 02:07:21,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 02:07:21,476 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 02:07:21,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 02:07:21,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910378048] [2020-07-21 02:07:21,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 02:07:21,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 02:07:21,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380890193] [2020-07-21 02:07:21,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 02:07:21,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 02:07:21,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 02:07:21,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 02:07:21,479 INFO L87 Difference]: Start difference. First operand 161 states and 215 transitions. Second operand 4 states. [2020-07-21 02:07:21,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 02:07:21,503 INFO L93 Difference]: Finished difference Result 161 states and 215 transitions. [2020-07-21 02:07:21,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 02:07:21,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-07-21 02:07:21,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 02:07:21,504 INFO L225 Difference]: With dead ends: 161 [2020-07-21 02:07:21,505 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 02:07:21,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 02:07:21,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 02:07:21,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 02:07:21,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 02:07:21,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 02:07:21,507 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2020-07-21 02:07:21,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 02:07:21,507 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 02:07:21,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 02:07:21,507 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 02:07:21,507 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 02:07:21,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 02:07:21,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 02:07:21,993 INFO L268 CegarLoopResult]: For program point Id_MCDC_100FINAL(lines 418 424) no Hoare annotation was computed. [2020-07-21 02:07:21,993 INFO L268 CegarLoopResult]: For program point Id_MCDC_100EXIT(lines 418 424) no Hoare annotation was computed. [2020-07-21 02:07:21,993 INFO L271 CegarLoopResult]: At program point Id_MCDC_100ENTRY(lines 418 424) the Hoare annotation is: true [2020-07-21 02:07:21,993 INFO L271 CegarLoopResult]: At program point L422(line 422) the Hoare annotation is: true [2020-07-21 02:07:21,993 INFO L268 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-07-21 02:07:21,993 INFO L264 CegarLoopResult]: At program point L403(line 403) the Hoare annotation is: (= 0 Id_MCDC_99_~Id_MCDC_140~0) [2020-07-21 02:07:21,994 INFO L268 CegarLoopResult]: For program point L403-1(line 403) no Hoare annotation was computed. [2020-07-21 02:07:21,994 INFO L271 CegarLoopResult]: At program point Id_MCDC_99ENTRY(lines 398 417) the Hoare annotation is: true [2020-07-21 02:07:21,994 INFO L268 CegarLoopResult]: For program point Id_MCDC_99EXIT(lines 398 417) no Hoare annotation was computed. [2020-07-21 02:07:21,994 INFO L268 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-07-21 02:07:21,994 INFO L268 CegarLoopResult]: For program point L406-2(lines 406 413) no Hoare annotation was computed. [2020-07-21 02:07:21,994 INFO L268 CegarLoopResult]: For program point L404-2(lines 404 414) no Hoare annotation was computed. [2020-07-21 02:07:21,994 INFO L271 CegarLoopResult]: At program point L404-3(lines 404 414) the Hoare annotation is: true [2020-07-21 02:07:21,994 INFO L271 CegarLoopResult]: At program point L404-4(lines 404 414) the Hoare annotation is: true [2020-07-21 02:07:21,995 INFO L268 CegarLoopResult]: For program point Id_MCDC_99FINAL(lines 398 417) no Hoare annotation was computed. [2020-07-21 02:07:21,995 INFO L268 CegarLoopResult]: For program point L221(line 221) no Hoare annotation was computed. [2020-07-21 02:07:21,995 INFO L268 CegarLoopResult]: For program point L213(line 213) no Hoare annotation was computed. [2020-07-21 02:07:21,995 INFO L268 CegarLoopResult]: For program point L209(line 209) no Hoare annotation was computed. [2020-07-21 02:07:21,995 INFO L268 CegarLoopResult]: For program point L209-2(line 209) no Hoare annotation was computed. [2020-07-21 02:07:21,995 INFO L271 CegarLoopResult]: At program point Id_MCDC_89ENTRY(lines 191 246) the Hoare annotation is: true [2020-07-21 02:07:21,995 INFO L268 CegarLoopResult]: For program point Id_MCDC_89EXIT(lines 191 246) no Hoare annotation was computed. [2020-07-21 02:07:21,996 INFO L268 CegarLoopResult]: For program point L234(lines 234 239) no Hoare annotation was computed. [2020-07-21 02:07:21,996 INFO L268 CegarLoopResult]: For program point L234-1(lines 232 244) no Hoare annotation was computed. [2020-07-21 02:07:21,996 INFO L268 CegarLoopResult]: For program point L218(line 218) no Hoare annotation was computed. [2020-07-21 02:07:21,996 INFO L268 CegarLoopResult]: For program point L218-2(line 218) no Hoare annotation was computed. [2020-07-21 02:07:21,996 INFO L268 CegarLoopResult]: For program point L210(line 210) no Hoare annotation was computed. [2020-07-21 02:07:21,996 INFO L268 CegarLoopResult]: For program point L202(lines 202 205) no Hoare annotation was computed. [2020-07-21 02:07:21,996 INFO L268 CegarLoopResult]: For program point Id_MCDC_89FINAL(lines 191 246) no Hoare annotation was computed. [2020-07-21 02:07:21,996 INFO L268 CegarLoopResult]: For program point L227(lines 227 230) no Hoare annotation was computed. [2020-07-21 02:07:21,996 INFO L268 CegarLoopResult]: For program point L219(line 219) no Hoare annotation was computed. [2020-07-21 02:07:21,997 INFO L268 CegarLoopResult]: For program point L215(line 215) no Hoare annotation was computed. [2020-07-21 02:07:21,997 INFO L268 CegarLoopResult]: For program point L215-2(line 215) no Hoare annotation was computed. [2020-07-21 02:07:21,997 INFO L271 CegarLoopResult]: At program point L207(lines 207 223) the Hoare annotation is: true [2020-07-21 02:07:21,997 INFO L268 CegarLoopResult]: For program point L232(line 232) no Hoare annotation was computed. [2020-07-21 02:07:21,997 INFO L268 CegarLoopResult]: For program point L232-2(line 232) no Hoare annotation was computed. [2020-07-21 02:07:21,997 INFO L268 CegarLoopResult]: For program point L232-3(line 232) no Hoare annotation was computed. [2020-07-21 02:07:21,997 INFO L268 CegarLoopResult]: For program point L232-5(lines 232 244) no Hoare annotation was computed. [2020-07-21 02:07:21,997 INFO L268 CegarLoopResult]: For program point L224-1(lines 224 231) no Hoare annotation was computed. [2020-07-21 02:07:21,998 INFO L271 CegarLoopResult]: At program point L224-3(lines 224 231) the Hoare annotation is: true [2020-07-21 02:07:21,998 INFO L268 CegarLoopResult]: For program point L224-4(lines 224 231) no Hoare annotation was computed. [2020-07-21 02:07:21,998 INFO L268 CegarLoopResult]: For program point L216(line 216) no Hoare annotation was computed. [2020-07-21 02:07:21,998 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-07-21 02:07:21,998 INFO L268 CegarLoopResult]: For program point L212-2(line 212) no Hoare annotation was computed. [2020-07-21 02:07:21,998 INFO L268 CegarLoopResult]: For program point L200(lines 200 206) no Hoare annotation was computed. [2020-07-21 02:07:21,998 INFO L268 CegarLoopResult]: For program point L200-2(lines 200 206) no Hoare annotation was computed. [2020-07-21 02:07:21,998 INFO L268 CegarLoopResult]: For program point L196(lines 196 199) no Hoare annotation was computed. [2020-07-21 02:07:21,999 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 425 456) the Hoare annotation is: true [2020-07-21 02:07:21,999 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 425 456) no Hoare annotation was computed. [2020-07-21 02:07:21,999 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 425 456) no Hoare annotation was computed. [2020-07-21 02:07:21,999 INFO L271 CegarLoopResult]: At program point L455(line 455) the Hoare annotation is: true [2020-07-21 02:07:21,999 INFO L268 CegarLoopResult]: For program point L450(lines 450 453) no Hoare annotation was computed. [2020-07-21 02:07:21,999 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-21 02:07:21,999 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 02:07:21,999 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-21 02:07:22,000 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-21 02:07:22,000 INFO L268 CegarLoopResult]: For program point L386-1(line 386) no Hoare annotation was computed. [2020-07-21 02:07:22,000 INFO L268 CegarLoopResult]: For program point L374-2(lines 374 391) no Hoare annotation was computed. [2020-07-21 02:07:22,000 INFO L271 CegarLoopResult]: At program point L374-3(lines 374 391) the Hoare annotation is: true [2020-07-21 02:07:22,000 INFO L268 CegarLoopResult]: For program point L374-4(lines 374 391) no Hoare annotation was computed. [2020-07-21 02:07:22,000 INFO L271 CegarLoopResult]: At program point Id_MCDC_97ENTRY(lines 329 397) the Hoare annotation is: true [2020-07-21 02:07:22,000 INFO L268 CegarLoopResult]: For program point Id_MCDC_97EXIT(lines 329 397) no Hoare annotation was computed. [2020-07-21 02:07:22,001 INFO L268 CegarLoopResult]: For program point L387(lines 387 390) no Hoare annotation was computed. [2020-07-21 02:07:22,001 INFO L268 CegarLoopResult]: For program point L354(lines 354 395) no Hoare annotation was computed. [2020-07-21 02:07:22,001 INFO L268 CegarLoopResult]: For program point L350-2(lines 350 353) no Hoare annotation was computed. [2020-07-21 02:07:22,001 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 02:07:22,001 INFO L268 CegarLoopResult]: For program point L350-4(lines 330 397) no Hoare annotation was computed. [2020-07-21 02:07:22,001 INFO L271 CegarLoopResult]: At program point L363(line 363) the Hoare annotation is: true [2020-07-21 02:07:22,001 INFO L268 CegarLoopResult]: For program point L363-1(lines 363 366) no Hoare annotation was computed. [2020-07-21 02:07:22,002 INFO L268 CegarLoopResult]: For program point Id_MCDC_97FINAL(lines 329 397) no Hoare annotation was computed. [2020-07-21 02:07:22,002 INFO L271 CegarLoopResult]: At program point L359(line 359) the Hoare annotation is: true [2020-07-21 02:07:22,002 INFO L268 CegarLoopResult]: For program point L359-1(lines 359 362) no Hoare annotation was computed. [2020-07-21 02:07:22,002 INFO L271 CegarLoopResult]: At program point L376(line 376) the Hoare annotation is: true [2020-07-21 02:07:22,002 INFO L268 CegarLoopResult]: For program point L376-1(lines 376 379) no Hoare annotation was computed. [2020-07-21 02:07:22,002 INFO L268 CegarLoopResult]: For program point L356-2(lines 356 394) no Hoare annotation was computed. [2020-07-21 02:07:22,002 INFO L271 CegarLoopResult]: At program point L356-3(lines 356 394) the Hoare annotation is: true [2020-07-21 02:07:22,002 INFO L271 CegarLoopResult]: At program point L369(line 369) the Hoare annotation is: true [2020-07-21 02:07:22,003 INFO L268 CegarLoopResult]: For program point L369-1(lines 369 372) no Hoare annotation was computed. [2020-07-21 02:07:22,003 INFO L271 CegarLoopResult]: At program point L386(line 386) the Hoare annotation is: true [2020-07-21 02:07:22,003 INFO L264 CegarLoopResult]: At program point L288(line 288) the Hoare annotation is: (= |Id_MCDC_95_#in~Id_MCDC_93| Id_MCDC_95_~Id_MCDC_93) [2020-07-21 02:07:22,003 INFO L268 CegarLoopResult]: For program point L288-1(line 288) no Hoare annotation was computed. [2020-07-21 02:07:22,003 INFO L268 CegarLoopResult]: For program point L286(lines 286 293) no Hoare annotation was computed. [2020-07-21 02:07:22,003 INFO L268 CegarLoopResult]: For program point L286-2(lines 286 293) no Hoare annotation was computed. [2020-07-21 02:07:22,003 INFO L268 CegarLoopResult]: For program point L282(lines 282 285) no Hoare annotation was computed. [2020-07-21 02:07:22,004 INFO L271 CegarLoopResult]: At program point Id_MCDC_95ENTRY(lines 278 297) the Hoare annotation is: true [2020-07-21 02:07:22,004 INFO L268 CegarLoopResult]: For program point Id_MCDC_95EXIT(lines 278 297) no Hoare annotation was computed. [2020-07-21 02:07:22,004 INFO L264 CegarLoopResult]: At program point L295(line 295) the Hoare annotation is: (= |Id_MCDC_95_#in~Id_MCDC_93| Id_MCDC_95_~Id_MCDC_93) [2020-07-21 02:07:22,004 INFO L264 CegarLoopResult]: At program point L294(line 294) the Hoare annotation is: (= |Id_MCDC_95_#in~Id_MCDC_93| Id_MCDC_95_~Id_MCDC_93) [2020-07-21 02:07:22,004 INFO L268 CegarLoopResult]: For program point L295-1(line 295) no Hoare annotation was computed. [2020-07-21 02:07:22,004 INFO L268 CegarLoopResult]: For program point L294-1(line 294) no Hoare annotation was computed. [2020-07-21 02:07:22,004 INFO L268 CegarLoopResult]: For program point Id_MCDC_95FINAL(lines 278 297) no Hoare annotation was computed. [2020-07-21 02:07:22,005 INFO L268 CegarLoopResult]: For program point L316(lines 316 321) no Hoare annotation was computed. [2020-07-21 02:07:22,005 INFO L268 CegarLoopResult]: For program point L316-1(lines 314 326) no Hoare annotation was computed. [2020-07-21 02:07:22,005 INFO L268 CegarLoopResult]: For program point L314(line 314) no Hoare annotation was computed. [2020-07-21 02:07:22,005 INFO L268 CegarLoopResult]: For program point L314-2(line 314) no Hoare annotation was computed. [2020-07-21 02:07:22,005 INFO L268 CegarLoopResult]: For program point L314-3(line 314) no Hoare annotation was computed. [2020-07-21 02:07:22,005 INFO L268 CegarLoopResult]: For program point L314-5(lines 314 326) no Hoare annotation was computed. [2020-07-21 02:07:22,005 INFO L268 CegarLoopResult]: For program point L306-1(lines 306 313) no Hoare annotation was computed. [2020-07-21 02:07:22,006 INFO L271 CegarLoopResult]: At program point L306-3(lines 306 313) the Hoare annotation is: true [2020-07-21 02:07:22,006 INFO L268 CegarLoopResult]: For program point L302(lines 302 305) no Hoare annotation was computed. [2020-07-21 02:07:22,006 INFO L268 CegarLoopResult]: For program point L306-4(lines 306 313) no Hoare annotation was computed. [2020-07-21 02:07:22,006 INFO L268 CegarLoopResult]: For program point Id_MCDC_96FINAL(lines 298 328) no Hoare annotation was computed. [2020-07-21 02:07:22,006 INFO L268 CegarLoopResult]: For program point L309(lines 309 312) no Hoare annotation was computed. [2020-07-21 02:07:22,006 INFO L271 CegarLoopResult]: At program point Id_MCDC_96ENTRY(lines 298 328) the Hoare annotation is: true [2020-07-21 02:07:22,006 INFO L268 CegarLoopResult]: For program point Id_MCDC_96EXIT(lines 298 328) no Hoare annotation was computed. [2020-07-21 02:07:22,006 INFO L268 CegarLoopResult]: For program point Id_MCDC_92EXIT(lines 247 277) no Hoare annotation was computed. [2020-07-21 02:07:22,007 INFO L268 CegarLoopResult]: For program point Id_MCDC_92FINAL(lines 247 277) no Hoare annotation was computed. [2020-07-21 02:07:22,007 INFO L268 CegarLoopResult]: For program point L259(lines 259 267) no Hoare annotation was computed. [2020-07-21 02:07:22,007 INFO L268 CegarLoopResult]: For program point L253(lines 253 267) no Hoare annotation was computed. [2020-07-21 02:07:22,007 INFO L271 CegarLoopResult]: At program point Id_MCDC_92ENTRY(lines 247 277) the Hoare annotation is: true [2020-07-21 02:07:22,007 INFO L271 CegarLoopResult]: At program point L272(line 272) the Hoare annotation is: true [2020-07-21 02:07:22,007 INFO L268 CegarLoopResult]: For program point L272-1(line 272) no Hoare annotation was computed. [2020-07-21 02:07:22,007 INFO L271 CegarLoopResult]: At program point L270(line 270) the Hoare annotation is: true [2020-07-21 02:07:22,007 INFO L268 CegarLoopResult]: For program point L270-1(line 270) no Hoare annotation was computed. [2020-07-21 02:07:22,007 INFO L268 CegarLoopResult]: For program point L268-1(lines 248 277) no Hoare annotation was computed. [2020-07-21 02:07:22,008 INFO L268 CegarLoopResult]: For program point L268-2(lines 268 275) no Hoare annotation was computed. [2020-07-21 02:07:22,008 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 02:07:22,008 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 02:07:22,008 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 02:07:22,008 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 02:07:22,008 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 02:07:22,008 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 02:07:22,008 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 02:07:22,009 INFO L268 CegarLoopResult]: For program point avoid_zeroEXIT(lines 7 13) no Hoare annotation was computed. [2020-07-21 02:07:22,009 INFO L268 CegarLoopResult]: For program point L9(lines 9 12) no Hoare annotation was computed. [2020-07-21 02:07:22,009 INFO L268 CegarLoopResult]: For program point L9-2(lines 7 13) no Hoare annotation was computed. [2020-07-21 02:07:22,009 INFO L271 CegarLoopResult]: At program point avoid_zeroENTRY(lines 7 13) the Hoare annotation is: true [2020-07-21 02:07:22,009 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 457 464) the Hoare annotation is: true [2020-07-21 02:07:22,009 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 02:07:22,009 INFO L268 CegarLoopResult]: For program point L459(lines 459 462) no Hoare annotation was computed. [2020-07-21 02:07:22,009 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 457 464) no Hoare annotation was computed. [2020-07-21 02:07:22,009 INFO L268 CegarLoopResult]: For program point L459-2(lines 457 464) no Hoare annotation was computed. [2020-07-21 02:07:22,010 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 461) no Hoare annotation was computed. [2020-07-21 02:07:22,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:07:22 BoogieIcfgContainer [2020-07-21 02:07:22,029 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 02:07:22,032 INFO L168 Benchmark]: Toolchain (without parser) took 11143.03 ms. Allocated memory was 138.9 MB in the beginning and 281.5 MB in the end (delta: 142.6 MB). Free memory was 101.5 MB in the beginning and 123.2 MB in the end (delta: -21.7 MB). Peak memory consumption was 120.9 MB. Max. memory is 7.1 GB. [2020-07-21 02:07:22,033 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 02:07:22,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 638.62 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 101.3 MB in the beginning and 174.4 MB in the end (delta: -73.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-07-21 02:07:22,035 INFO L168 Benchmark]: Boogie Preprocessor took 142.08 ms. Allocated memory is still 203.4 MB. Free memory was 174.4 MB in the beginning and 170.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-07-21 02:07:22,036 INFO L168 Benchmark]: RCFGBuilder took 1232.44 ms. Allocated memory is still 203.4 MB. Free memory was 170.5 MB in the beginning and 108.3 MB in the end (delta: 62.2 MB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB. [2020-07-21 02:07:22,037 INFO L168 Benchmark]: TraceAbstraction took 9122.55 ms. Allocated memory was 203.4 MB in the beginning and 281.5 MB in the end (delta: 78.1 MB). Free memory was 108.3 MB in the beginning and 123.2 MB in the end (delta: -14.9 MB). Peak memory consumption was 63.2 MB. Max. memory is 7.1 GB. [2020-07-21 02:07:22,040 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 138.9 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 638.62 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 101.3 MB in the beginning and 174.4 MB in the end (delta: -73.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.08 ms. Allocated memory is still 203.4 MB. Free memory was 174.4 MB in the beginning and 170.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1232.44 ms. Allocated memory is still 203.4 MB. Free memory was 170.5 MB in the beginning and 108.3 MB in the end (delta: 62.2 MB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9122.55 ms. Allocated memory was 203.4 MB in the beginning and 281.5 MB in the end (delta: 78.1 MB). Free memory was 108.3 MB in the beginning and 123.2 MB in the end (delta: -14.9 MB). Peak memory consumption was 63.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 461]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 207]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 224]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 404]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 374]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 350]: Loop Invariant Derived loop invariant: 6144 == Id_MCDC_123 - InvariantResult [Line: 306]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 356]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 132 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.7s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1553 SDtfs, 259 SDslu, 3386 SDs, 0 SdLazy, 223 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 678 GetRequests, 644 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred 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, 124 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 191 PreInvPairs, 229 NumberOfFragments, 44 HoareAnnotationTreeSize, 191 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 34 FomulaSimplificationsInter, 87 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 4.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 506 NumberOfCodeBlocks, 365 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 667 ConstructedInterpolants, 0 QuantifiedInterpolants, 48651 SizeOfPredicates, 13 NumberOfNonLiveVariables, 5223 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 266/274 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...