/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:48:39,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:48:39,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:48:39,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:48:39,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:48:39,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:48:39,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:48:39,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:48:39,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:48:39,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:48:39,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:48:39,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:48:39,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:48:39,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:48:39,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:48:39,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:48:39,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:48:39,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:48:39,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:48:39,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:48:39,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:48:39,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:48:39,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:48:39,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:48:39,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:48:39,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:48:39,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:48:39,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:48:39,726 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 11:48:39,743 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:48:39,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:48:39,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:48:39,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:48:39,746 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:48:39,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:48:39,746 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:48:39,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:48:39,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:48:39,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:48:39,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:48:39,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:48:39,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:48:39,748 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:48:39,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:48:39,748 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:48:39,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:48:39,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:48:39,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:48:39,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:48:39,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:48:39,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:48:39,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:48:39,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:48:39,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:48:39,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:48:39,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:39,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:48:39,751 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:48:39,751 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 -> NOT_INCREMENTALLY [2020-07-20 11:48:40,184 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:48:40,209 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:48:40,213 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:48:40,215 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:48:40,218 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:48:40,220 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-07-20 11:48:40,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/607bd877b/34268b56e23f40519cbd074790dd7704/FLAG59eee8b12 [2020-07-20 11:48:40,959 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:48:40,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-07-20 11:48:40,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/607bd877b/34268b56e23f40519cbd074790dd7704/FLAG59eee8b12 [2020-07-20 11:48:41,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/607bd877b/34268b56e23f40519cbd074790dd7704 [2020-07-20 11:48:41,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:48:41,285 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:48:41,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:48:41,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:48:41,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:48:41,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:48:41" (1/1) ... [2020-07-20 11:48:41,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15875eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:41, skipping insertion in model container [2020-07-20 11:48:41,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:48:41" (1/1) ... [2020-07-20 11:48:41,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:48:41,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:48:41,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:48:41,626 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:48:41,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:48:41,817 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:48:41,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:41 WrapperNode [2020-07-20 11:48:41,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:48:41,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:48:41,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:48:41,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:48:41,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:41" (1/1) ... [2020-07-20 11:48:41,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:41" (1/1) ... [2020-07-20 11:48:41,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:41" (1/1) ... [2020-07-20 11:48:41,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:41" (1/1) ... [2020-07-20 11:48:41,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:41" (1/1) ... [2020-07-20 11:48:41,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:41" (1/1) ... [2020-07-20 11:48:41,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:41" (1/1) ... [2020-07-20 11:48:41,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:48:41,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:48:41,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:48:41,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:48:41,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:48:41,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:48:41,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:48:41,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 11:48:41,972 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-07-20 11:48:41,972 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-07-20 11:48:41,972 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:48:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:48:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 11:48:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-07-20 11:48:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-07-20 11:48:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-07-20 11:48:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-07-20 11:48:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-07-20 11:48:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-07-20 11:48:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-07-20 11:48:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-07-20 11:48:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-20 11:48:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-07-20 11:48:41,975 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-07-20 11:48:41,976 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-07-20 11:48:41,976 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-07-20 11:48:41,976 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-20 11:48:41,976 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-07-20 11:48:41,977 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-07-20 11:48:41,977 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-07-20 11:48:41,977 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-07-20 11:48:41,977 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-07-20 11:48:41,978 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-07-20 11:48:41,978 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-07-20 11:48:41,978 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-07-20 11:48:41,978 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-07-20 11:48:41,978 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-07-20 11:48:41,978 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-07-20 11:48:41,979 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-07-20 11:48:41,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 11:48:41,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:48:41,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 11:48:41,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 11:48:41,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:48:41,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:48:41,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:48:42,616 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:48:42,617 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-20 11:48:42,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:48:42 BoogieIcfgContainer [2020-07-20 11:48:42,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:48:42,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:48:42,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:48:42,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:48:42,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:48:41" (1/3) ... [2020-07-20 11:48:42,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac5f032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:48:42, skipping insertion in model container [2020-07-20 11:48:42,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:48:41" (2/3) ... [2020-07-20 11:48:42,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac5f032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:48:42, skipping insertion in model container [2020-07-20 11:48:42,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:48:42" (3/3) ... [2020-07-20 11:48:42,637 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2020-07-20 11:48:42,647 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:48:42,661 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:48:42,676 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:48:42,711 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:48:42,712 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:48:42,712 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:48:42,712 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:48:42,712 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:48:42,713 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:48:42,713 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:48:42,713 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:48:42,741 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-07-20 11:48:42,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 11:48:42,753 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:48:42,755 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] [2020-07-20 11:48:42,756 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:48:42,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:48:42,763 INFO L82 PathProgramCache]: Analyzing trace with hash -2018987797, now seen corresponding path program 1 times [2020-07-20 11:48:42,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:48:42,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463648018] [2020-07-20 11:48:42,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:48:42,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 11:48:42,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:48:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:48:42,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:48:42,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463648018] [2020-07-20 11:48:42,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:48:42,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 11:48:42,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971918085] [2020-07-20 11:48:42,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 11:48:42,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:48:43,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 11:48:43,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:48:43,014 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2020-07-20 11:48:43,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:48:43,056 INFO L93 Difference]: Finished difference Result 93 states and 123 transitions. [2020-07-20 11:48:43,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 11:48:43,058 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2020-07-20 11:48:43,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:48:43,069 INFO L225 Difference]: With dead ends: 93 [2020-07-20 11:48:43,070 INFO L226 Difference]: Without dead ends: 43 [2020-07-20 11:48:43,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:48:43,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-20 11:48:43,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-20 11:48:43,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-20 11:48:43,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2020-07-20 11:48:43,129 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2020-07-20 11:48:43,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:48:43,130 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2020-07-20 11:48:43,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 11:48:43,130 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2020-07-20 11:48:43,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-20 11:48:43,132 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:48:43,132 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] [2020-07-20 11:48:43,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:43,348 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:48:43,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:48:43,349 INFO L82 PathProgramCache]: Analyzing trace with hash -171780126, now seen corresponding path program 1 times [2020-07-20 11:48:43,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:48:43,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448364654] [2020-07-20 11:48:43,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:48:43,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:48:43,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:48:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:48:43,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:48:43,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448364654] [2020-07-20 11:48:43,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:48:43,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:48:43,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524432396] [2020-07-20 11:48:43,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:48:43,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:48:43,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:48:43,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:48:43,482 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 3 states. [2020-07-20 11:48:43,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:48:43,507 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-07-20 11:48:43,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:48:43,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-07-20 11:48:43,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:48:43,510 INFO L225 Difference]: With dead ends: 78 [2020-07-20 11:48:43,511 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 11:48:43,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:48:43,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 11:48:43,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-20 11:48:43,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 11:48:43,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-20 11:48:43,528 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2020-07-20 11:48:43,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:48:43,529 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-20 11:48:43,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:48:43,531 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-20 11:48:43,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-20 11:48:43,534 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:48:43,534 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] [2020-07-20 11:48:43,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:43,748 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:48:43,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:48:43,749 INFO L82 PathProgramCache]: Analyzing trace with hash 250921700, now seen corresponding path program 1 times [2020-07-20 11:48:43,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:48:43,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340772065] [2020-07-20 11:48:43,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:48:43,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:48:43,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:48:43,951 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:48:43,977 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:48:43,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:48:43,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:48:43,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340772065] [2020-07-20 11:48:43,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:48:43,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:48:43,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899195206] [2020-07-20 11:48:43,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:48:43,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:48:43,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:48:43,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:48:43,995 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 5 states. [2020-07-20 11:48:44,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:48:44,103 INFO L93 Difference]: Finished difference Result 102 states and 130 transitions. [2020-07-20 11:48:44,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:48:44,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-07-20 11:48:44,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:48:44,108 INFO L225 Difference]: With dead ends: 102 [2020-07-20 11:48:44,108 INFO L226 Difference]: Without dead ends: 67 [2020-07-20 11:48:44,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:48:44,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-20 11:48:44,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 48. [2020-07-20 11:48:44,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-20 11:48:44,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2020-07-20 11:48:44,124 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 33 [2020-07-20 11:48:44,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:48:44,125 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2020-07-20 11:48:44,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:48:44,125 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2020-07-20 11:48:44,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-20 11:48:44,127 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:48:44,127 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] [2020-07-20 11:48:44,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:44,342 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:48:44,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:48:44,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1210151716, now seen corresponding path program 1 times [2020-07-20 11:48:44,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:48:44,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950322462] [2020-07-20 11:48:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:48:44,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:48:44,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:48:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:48:44,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:48:44,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950322462] [2020-07-20 11:48:44,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:48:44,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:48:44,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486612996] [2020-07-20 11:48:44,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:48:44,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:48:44,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:48:44,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:48:44,512 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 6 states. [2020-07-20 11:48:44,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:48:44,704 INFO L93 Difference]: Finished difference Result 138 states and 175 transitions. [2020-07-20 11:48:44,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 11:48:44,704 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-07-20 11:48:44,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:48:44,706 INFO L225 Difference]: With dead ends: 138 [2020-07-20 11:48:44,706 INFO L226 Difference]: Without dead ends: 78 [2020-07-20 11:48:44,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:48:44,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-20 11:48:44,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 55. [2020-07-20 11:48:44,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-20 11:48:44,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-07-20 11:48:44,720 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 33 [2020-07-20 11:48:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:48:44,720 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-07-20 11:48:44,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:48:44,721 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-07-20 11:48:44,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-20 11:48:44,722 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:48:44,722 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] [2020-07-20 11:48:44,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:44,936 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:48:44,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:48:44,937 INFO L82 PathProgramCache]: Analyzing trace with hash -783992990, now seen corresponding path program 1 times [2020-07-20 11:48:44,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:48:44,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159613111] [2020-07-20 11:48:44,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:48:45,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:48:45,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:48:45,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:48:45,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:48:45,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159613111] [2020-07-20 11:48:45,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:48:45,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:48:45,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55659568] [2020-07-20 11:48:45,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:48:45,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:48:45,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:48:45,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:48:45,073 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 5 states. [2020-07-20 11:48:45,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:48:45,216 INFO L93 Difference]: Finished difference Result 124 states and 152 transitions. [2020-07-20 11:48:45,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:48:45,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-07-20 11:48:45,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:48:45,218 INFO L225 Difference]: With dead ends: 124 [2020-07-20 11:48:45,219 INFO L226 Difference]: Without dead ends: 66 [2020-07-20 11:48:45,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:48:45,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-20 11:48:45,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 50. [2020-07-20 11:48:45,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-20 11:48:45,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-07-20 11:48:45,229 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 33 [2020-07-20 11:48:45,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:48:45,230 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-07-20 11:48:45,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:48:45,230 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-07-20 11:48:45,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 11:48:45,231 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:48:45,231 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:48:45,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:45,447 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:48:45,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:48:45,449 INFO L82 PathProgramCache]: Analyzing trace with hash -731835505, now seen corresponding path program 1 times [2020-07-20 11:48:45,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:48:45,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971625147] [2020-07-20 11:48:45,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:48:45,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:48:45,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:48:45,583 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:48:45,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 11:48:45,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:48:45,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971625147] [2020-07-20 11:48:45,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:48:45,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:48:45,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890567965] [2020-07-20 11:48:45,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:48:45,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:48:45,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:48:45,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:48:45,626 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 6 states. [2020-07-20 11:48:45,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:48:45,848 INFO L93 Difference]: Finished difference Result 146 states and 185 transitions. [2020-07-20 11:48:45,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:48:45,849 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-07-20 11:48:45,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:48:45,852 INFO L225 Difference]: With dead ends: 146 [2020-07-20 11:48:45,853 INFO L226 Difference]: Without dead ends: 102 [2020-07-20 11:48:45,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:48:45,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-07-20 11:48:45,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 72. [2020-07-20 11:48:45,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-07-20 11:48:45,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2020-07-20 11:48:45,886 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 38 [2020-07-20 11:48:45,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:48:45,887 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2020-07-20 11:48:45,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:48:45,887 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2020-07-20 11:48:45,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 11:48:45,891 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:48:45,892 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:48:46,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:46,108 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:48:46,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:48:46,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1568987085, now seen corresponding path program 1 times [2020-07-20 11:48:46,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:48:46,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364262206] [2020-07-20 11:48:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-20 11:48:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:48:46,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:48:46,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:48:46,230 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:48:46,259 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:48:46,261 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:48:46,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 11:48:46,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:48:46,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364262206] [2020-07-20 11:48:46,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:48:46,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 11:48:46,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581188302] [2020-07-20 11:48:46,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 11:48:46,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:48:46,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 11:48:46,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:48:46,286 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand 7 states. [2020-07-20 11:48:46,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:48:46,437 INFO L93 Difference]: Finished difference Result 104 states and 130 transitions. [2020-07-20 11:48:46,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:48:46,438 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-07-20 11:48:46,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:48:46,439 INFO L225 Difference]: With dead ends: 104 [2020-07-20 11:48:46,440 INFO L226 Difference]: Without dead ends: 102 [2020-07-20 11:48:46,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:48:46,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-07-20 11:48:46,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 90. [2020-07-20 11:48:46,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-07-20 11:48:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 112 transitions. [2020-07-20 11:48:46,472 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 112 transitions. Word has length 38 [2020-07-20 11:48:46,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:48:46,473 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 112 transitions. [2020-07-20 11:48:46,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 11:48:46,473 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 112 transitions. [2020-07-20 11:48:46,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-20 11:48:46,484 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:48:46,484 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:48:46,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:46,699 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:48:46,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:48:46,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1909797290, now seen corresponding path program 1 times [2020-07-20 11:48:46,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:48:46,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043090164] [2020-07-20 11:48:46,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-20 11:48:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:48:46,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 11:48:46,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:48:46,784 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:48:46,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 11:48:46,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:48:46,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043090164] [2020-07-20 11:48:46,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:48:46,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:48:46,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855135298] [2020-07-20 11:48:46,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:48:46,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:48:46,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:48:46,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:48:46,800 INFO L87 Difference]: Start difference. First operand 90 states and 112 transitions. Second operand 4 states. [2020-07-20 11:48:46,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:48:46,824 INFO L93 Difference]: Finished difference Result 135 states and 169 transitions. [2020-07-20 11:48:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 11:48:46,825 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-07-20 11:48:46,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:48:46,832 INFO L225 Difference]: With dead ends: 135 [2020-07-20 11:48:46,833 INFO L226 Difference]: Without dead ends: 96 [2020-07-20 11:48:46,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:48:46,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-07-20 11:48:46,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-07-20 11:48:46,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-07-20 11:48:46,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2020-07-20 11:48:46,859 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 40 [2020-07-20 11:48:46,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:48:46,859 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2020-07-20 11:48:46,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:48:46,868 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2020-07-20 11:48:46,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-20 11:48:46,870 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:48:46,870 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:48:47,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:47,071 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:48:47,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:48:47,072 INFO L82 PathProgramCache]: Analyzing trace with hash 888728936, now seen corresponding path program 1 times [2020-07-20 11:48:47,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:48:47,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389923359] [2020-07-20 11:48:47,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-20 11:48:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:48:47,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:48:47,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:48:47,174 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:48:47,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:48:47,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:48:47,211 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:48:47,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:48:47,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389923359] [2020-07-20 11:48:47,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:48:47,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-07-20 11:48:47,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244549096] [2020-07-20 11:48:47,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 11:48:47,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:48:47,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 11:48:47,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:48:47,268 INFO L87 Difference]: Start difference. First operand 96 states and 118 transitions. Second operand 7 states. [2020-07-20 11:48:47,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:48:47,457 INFO L93 Difference]: Finished difference Result 215 states and 266 transitions. [2020-07-20 11:48:47,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:48:47,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-07-20 11:48:47,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:48:47,459 INFO L225 Difference]: With dead ends: 215 [2020-07-20 11:48:47,459 INFO L226 Difference]: Without dead ends: 139 [2020-07-20 11:48:47,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-07-20 11:48:47,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-07-20 11:48:47,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 109. [2020-07-20 11:48:47,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-07-20 11:48:47,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2020-07-20 11:48:47,478 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 132 transitions. Word has length 40 [2020-07-20 11:48:47,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:48:47,479 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 132 transitions. [2020-07-20 11:48:47,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 11:48:47,479 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 132 transitions. [2020-07-20 11:48:47,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 11:48:47,482 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:48:47,482 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 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] [2020-07-20 11:48:47,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:47,684 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:48:47,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:48:47,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1526927005, now seen corresponding path program 2 times [2020-07-20 11:48:47,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:48:47,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789989232] [2020-07-20 11:48:47,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:48:47,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 11:48:47,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:48:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:48:47,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:48:47,951 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:48:47,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789989232] [2020-07-20 11:48:47,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:48:47,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2020-07-20 11:48:47,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921059111] [2020-07-20 11:48:47,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-20 11:48:47,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:48:47,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-20 11:48:47,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-07-20 11:48:47,955 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand 15 states. [2020-07-20 11:48:49,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:48:49,005 INFO L93 Difference]: Finished difference Result 431 states and 557 transitions. [2020-07-20 11:48:49,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-20 11:48:49,005 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-07-20 11:48:49,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:48:49,012 INFO L225 Difference]: With dead ends: 431 [2020-07-20 11:48:49,012 INFO L226 Difference]: Without dead ends: 251 [2020-07-20 11:48:49,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=756, Unknown=0, NotChecked=0, Total=1056 [2020-07-20 11:48:49,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-07-20 11:48:49,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 162. [2020-07-20 11:48:49,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-07-20 11:48:49,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 196 transitions. [2020-07-20 11:48:49,030 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 196 transitions. Word has length 45 [2020-07-20 11:48:49,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:48:49,030 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 196 transitions. [2020-07-20 11:48:49,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-20 11:48:49,031 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 196 transitions. [2020-07-20 11:48:49,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 11:48:49,032 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:48:49,032 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 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] [2020-07-20 11:48:49,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:49,247 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:48:49,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:48:49,247 INFO L82 PathProgramCache]: Analyzing trace with hash -2066975713, now seen corresponding path program 1 times [2020-07-20 11:48:49,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:48:49,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074860809] [2020-07-20 11:48:49,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:48:49,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 11:48:49,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:48:49,400 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:48:49,401 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:48:49,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:48:49,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:48:49,453 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:48:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:48:49,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074860809] [2020-07-20 11:48:49,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:48:49,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2020-07-20 11:48:49,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551567044] [2020-07-20 11:48:49,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-20 11:48:49,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:48:49,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-20 11:48:49,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-07-20 11:48:49,552 INFO L87 Difference]: Start difference. First operand 162 states and 196 transitions. Second operand 15 states. [2020-07-20 11:48:50,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:48:50,187 INFO L93 Difference]: Finished difference Result 259 states and 314 transitions. [2020-07-20 11:48:50,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-20 11:48:50,190 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-07-20 11:48:50,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:48:50,193 INFO L225 Difference]: With dead ends: 259 [2020-07-20 11:48:50,196 INFO L226 Difference]: Without dead ends: 257 [2020-07-20 11:48:50,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-07-20 11:48:50,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-07-20 11:48:50,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 162. [2020-07-20 11:48:50,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-07-20 11:48:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 196 transitions. [2020-07-20 11:48:50,223 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 196 transitions. Word has length 45 [2020-07-20 11:48:50,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:48:50,226 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 196 transitions. [2020-07-20 11:48:50,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-20 11:48:50,227 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 196 transitions. [2020-07-20 11:48:50,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 11:48:50,228 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:48:50,229 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 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] [2020-07-20 11:48:50,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:50,446 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:48:50,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:48:50,447 INFO L82 PathProgramCache]: Analyzing trace with hash 709278555, now seen corresponding path program 1 times [2020-07-20 11:48:50,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:48:50,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717708504] [2020-07-20 11:48:50,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:48:50,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 11:48:50,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:48:50,631 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:48:50,632 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:48:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:48:50,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:48:50,689 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:48:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:48:50,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717708504] [2020-07-20 11:48:50,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:48:50,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-07-20 11:48:50,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542611873] [2020-07-20 11:48:50,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-20 11:48:50,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:48:50,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-20 11:48:50,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-07-20 11:48:50,830 INFO L87 Difference]: Start difference. First operand 162 states and 196 transitions. Second operand 16 states. [2020-07-20 11:48:51,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:48:51,483 INFO L93 Difference]: Finished difference Result 304 states and 375 transitions. [2020-07-20 11:48:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-20 11:48:51,484 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-07-20 11:48:51,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:48:51,488 INFO L225 Difference]: With dead ends: 304 [2020-07-20 11:48:51,488 INFO L226 Difference]: Without dead ends: 302 [2020-07-20 11:48:51,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2020-07-20 11:48:51,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-07-20 11:48:51,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 184. [2020-07-20 11:48:51,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-07-20 11:48:51,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 229 transitions. [2020-07-20 11:48:51,502 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 229 transitions. Word has length 45 [2020-07-20 11:48:51,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:48:51,502 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 229 transitions. [2020-07-20 11:48:51,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-20 11:48:51,503 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 229 transitions. [2020-07-20 11:48:51,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 11:48:51,504 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:48:51,504 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 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] [2020-07-20 11:48:51,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:51,717 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:48:51,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:48:51,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1410343133, now seen corresponding path program 1 times [2020-07-20 11:48:51,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:48:51,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477616792] [2020-07-20 11:48:51,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:48:51,776 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:48:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:48:51,797 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:48:51,876 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 11:48:51,880 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 11:48:52,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:48:52,132 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-20 11:48:52,135 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-20 11:48:52,136 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-20 11:48:52,137 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-20 11:48:52,138 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-20 11:48:52,138 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-20 11:48:52,139 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-20 11:48:52,140 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-20 11:48:52,140 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-20 11:48:52,141 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-20 11:48:52,142 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2020-07-20 11:48:52,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:48:52 BoogieIcfgContainer [2020-07-20 11:48:52,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:48:52,171 INFO L168 Benchmark]: Toolchain (without parser) took 10886.27 ms. Allocated memory was 137.4 MB in the beginning and 288.9 MB in the end (delta: 151.5 MB). Free memory was 101.8 MB in the beginning and 114.5 MB in the end (delta: -12.7 MB). Peak memory consumption was 138.8 MB. Max. memory is 7.1 GB. [2020-07-20 11:48:52,172 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-20 11:48:52,173 INFO L168 Benchmark]: CACSL2BoogieTranslator took 533.90 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 101.4 MB in the beginning and 179.7 MB in the end (delta: -78.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-07-20 11:48:52,174 INFO L168 Benchmark]: Boogie Preprocessor took 67.34 ms. Allocated memory is still 201.9 MB. Free memory was 179.7 MB in the beginning and 177.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-07-20 11:48:52,175 INFO L168 Benchmark]: RCFGBuilder took 736.97 ms. Allocated memory is still 201.9 MB. Free memory was 177.5 MB in the beginning and 150.0 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:48:52,176 INFO L168 Benchmark]: TraceAbstraction took 9539.86 ms. Allocated memory was 201.9 MB in the beginning and 288.9 MB in the end (delta: 87.0 MB). Free memory was 149.3 MB in the beginning and 114.5 MB in the end (delta: 34.8 MB). Peak memory consumption was 121.8 MB. Max. memory is 7.1 GB. [2020-07-20 11:48:52,179 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 533.90 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 101.4 MB in the beginning and 179.7 MB in the end (delta: -78.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.34 ms. Allocated memory is still 201.9 MB. Free memory was 179.7 MB in the beginning and 177.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 736.97 ms. Allocated memory is still 201.9 MB. Free memory was 177.5 MB in the beginning and 150.0 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9539.86 ms. Allocated memory was 201.9 MB in the beginning and 288.9 MB in the end (delta: 87.0 MB). Free memory was 149.3 MB in the beginning and 114.5 MB in the end (delta: 34.8 MB). Peak memory consumption was 121.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L74] char A [2 + 2 + 4 +1]; [L75] A[2 + 2 + 4] = 0 VAL [A={3:0}] [L76] CALL parse_expression_list (A) VAL [str={3:0}] [L48] int start=0, i=-1, j=-1; [L49] char str2[2]; VAL [i=-1, j=-1, start=0, str={3:0}, str={3:0}, str2={2:0}] [L50] COND FALSE !(!str) VAL [i=-1, j=-1, start=0, str={3:0}, str={3:0}, str2={2:0}] [L52] i++ [L53] str[i] [L54] case 0: VAL [i=0, j=-1, start=0, str={3:0}, str={3:0}, str2={2:0}, str[i]=14] [L69] EXPR str[i] VAL [i=0, j=-1, start=0, str={3:0}, str={3:0}, str2={2:0}, str[i]=14] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [L54] case 0: VAL [i=1, j=-1, start=0, str={3:0}, str={3:0}, str2={2:0}, str[i]=16] [L69] EXPR str[i] VAL [i=1, j=-1, start=0, str={3:0}, str={3:0}, str2={2:0}, str[i]=16] [L69] COND TRUE str[i] != 0 [L52] i++ [L53] str[i] [L54] case 0: VAL [i=2, j=-1, start=0, str={3:0}, str={3:0}, str2={2:0}, str[i]=0] [L55] EXPR str[start] [L55] (str[start] == ' ') || (str[start] == '\t') [L55] EXPR str[start] [L55] (str[start] == ' ') || (str[start] == '\t') VAL [(str[start] == ' ') || (str[start] == '\t')=0, i=2, j=-1, start=0, str={3:0}, str={3:0}, str2={2:0}, str[i]=0, str[start]=14, str[start]=14] [L55] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L56] EXPR str[start] VAL [i=2, j=-1, start=0, str={3:0}, str={3:0}, str2={2:0}, str[i]=0, str[start]=14] [L56] COND FALSE !(str[start] == '"') [L57] j = i-1 VAL [i=2, j=1, start=0, str={3:0}, str={3:0}, str2={2:0}, str[i]=0] [L58] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L58] EXPR str[j] [L58] EXPR (str[j] == ' ') || (str[j] == '\t') [L58] EXPR str[j] [L58] EXPR (str[j] == ' ') || (str[j] == '\t') VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=1, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, str={3:0}, str={3:0}, str2={2:0}, str[i]=0, str[j]=16, str[j]=16] [L58] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) VAL [(0 < j) && ((str[j] == ' ') || (str[j] == '\t'))=0, (str[j] == ' ') || (str[j] == '\t')=0, i=2, j=1, start=0, str={3:0}, str={3:0}, str2={2:0}, str[i]=0, str[j]=16, str[j]=16] [L58] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L59] (0 < j) && (str[j] == '"') [L59] EXPR str[j] [L59] (0 < j) && (str[j] == '"') VAL [(0 < j) && (str[j] == '"')=0, i=2, j=1, start=0, str={3:0}, str={3:0}, str2={2:0}, str[i]=0, str[j]=16] [L59] COND FALSE !((0 < j) && (str[j] == '"')) [L60] COND TRUE start<=j VAL [i=2, j=1, start=0, str={3:0}, str={3:0}, str2={2:0}, str[i]=0] [L61] CALL r_strncpy(str2, str+start, j-start+1) VAL [\old(n)=2, dest={2:0}, src={3:0}] [L30] return strncpy(dest,src,n); [L61] RET r_strncpy(str2, str+start, j-start+1) VAL [i=2, j=1, r_strncpy(str2, str+start, j-start+1)={18:19}, start=0, str={3:0}, str={3:0}, str2={2:0}, str[i]=0] [L62] CALL __VERIFIER_assert(j - start + 1 < 2) VAL [\old(cond)=0] [L3] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.3s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 604 SDtfs, 1153 SDslu, 2468 SDs, 0 SdLazy, 1844 SolverSat, 261 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 665 GetRequests, 541 SyntacticMatches, 7 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 432 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 497 NumberOfCodeBlocks, 497 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 611 ConstructedInterpolants, 0 QuantifiedInterpolants, 80915 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1738 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 6/64 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 incorrect! Received shutdown request...