/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/rangesum05.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:40:51,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:40:51,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:40:51,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:40:51,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:40:51,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:40:51,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:40:51,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:40:51,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:40:51,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:40:51,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:40:51,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:40:51,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:40:51,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:40:51,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:40:51,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:40:51,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:40:51,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:40:51,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:40:51,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:40:51,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:40:51,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:40:51,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:40:51,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:40:51,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 16:40:51,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 16:40:51,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 16:40:51,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 16:40:51,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 16:40:51,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 16:40:51,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 16:40:51,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 16:40:51,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 16:40:51,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 16:40:51,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 16:40:51,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 16:40:51,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 16:40:51,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 16:40:51,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:40:51,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:40:51,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:40:51,101 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 16:40:51,114 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:40:51,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:40:51,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:40:51,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:40:51,116 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:40:51,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:40:51,116 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:40:51,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:40:51,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:40:51,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:40:51,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:40:51,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:40:51,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:40:51,118 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:40:51,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:40:51,118 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:40:51,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:40:51,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:40:51,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:40:51,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:40:51,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:40:51,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:40:51,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:40:51,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:40:51,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:40:51,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:40:51,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:51,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:40:51,121 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:40:51,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 16:40:51,418 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:40:51,430 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:40:51,433 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:40:51,435 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:40:51,435 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:40:51,436 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum05.i [2020-07-21 16:40:51,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09ae4a9e1/1fc5464b3acc439ea50dcf5b515d41ce/FLAGa4b7e3855 [2020-07-21 16:40:51,915 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:40:51,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum05.i [2020-07-21 16:40:51,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09ae4a9e1/1fc5464b3acc439ea50dcf5b515d41ce/FLAGa4b7e3855 [2020-07-21 16:40:52,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09ae4a9e1/1fc5464b3acc439ea50dcf5b515d41ce [2020-07-21 16:40:52,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:40:52,320 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:40:52,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:40:52,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:40:52,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:40:52,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:40:52" (1/1) ... [2020-07-21 16:40:52,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d1cfdc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:40:52, skipping insertion in model container [2020-07-21 16:40:52,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:40:52" (1/1) ... [2020-07-21 16:40:52,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:40:52,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:40:52,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:40:52,521 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:40:52,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:40:52,557 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:40:52,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:40:52 WrapperNode [2020-07-21 16:40:52,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:40:52,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:40:52,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:40:52,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:40:52,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:40:52" (1/1) ... [2020-07-21 16:40:52,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:40:52" (1/1) ... [2020-07-21 16:40:52,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:40:52" (1/1) ... [2020-07-21 16:40:52,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:40:52" (1/1) ... [2020-07-21 16:40:52,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:40:52" (1/1) ... [2020-07-21 16:40:52,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:40:52" (1/1) ... [2020-07-21 16:40:52,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:40:52" (1/1) ... [2020-07-21 16:40:52,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:40:52,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:40:52,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:40:52,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:40:52,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:40:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:40:52,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:40:52,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:40:52,759 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2020-07-21 16:40:52,759 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2020-07-21 16:40:52,759 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:40:52,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:40:52,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:40:52,760 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2020-07-21 16:40:52,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 16:40:52,760 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2020-07-21 16:40:52,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 16:40:52,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:40:52,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 16:40:52,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 16:40:52,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:40:52,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:40:53,037 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:40:53,037 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-21 16:40:53,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:40:53 BoogieIcfgContainer [2020-07-21 16:40:53,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:40:53,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:40:53,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:40:53,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:40:53,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:40:52" (1/3) ... [2020-07-21 16:40:53,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680533d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:40:53, skipping insertion in model container [2020-07-21 16:40:53,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:40:52" (2/3) ... [2020-07-21 16:40:53,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680533d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:40:53, skipping insertion in model container [2020-07-21 16:40:53,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:40:53" (3/3) ... [2020-07-21 16:40:53,051 INFO L109 eAbstractionObserver]: Analyzing ICFG rangesum05.i [2020-07-21 16:40:53,061 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:40:53,068 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:40:53,083 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:40:53,107 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:40:53,108 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:40:53,108 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:40:53,108 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:40:53,108 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:40:53,108 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:40:53,109 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:40:53,109 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:40:53,128 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-21 16:40:53,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-21 16:40:53,135 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:40:53,136 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:40:53,136 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:40:53,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:40:53,142 INFO L82 PathProgramCache]: Analyzing trace with hash -332770493, now seen corresponding path program 1 times [2020-07-21 16:40:53,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:40:53,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768100461] [2020-07-21 16:40:53,154 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:53,282 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:40:53,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:40:53,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:40:53,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:40:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 16:40:53,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:40:53,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768100461] [2020-07-21 16:40:53,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:40:53,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:40:53,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134890074] [2020-07-21 16:40:53,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:40:53,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:40:53,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:40:53,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:40:53,367 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-07-21 16:40:53,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:40:53,414 INFO L93 Difference]: Finished difference Result 70 states and 97 transitions. [2020-07-21 16:40:53,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:40:53,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-07-21 16:40:53,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:40:53,426 INFO L225 Difference]: With dead ends: 70 [2020-07-21 16:40:53,427 INFO L226 Difference]: Without dead ends: 38 [2020-07-21 16:40:53,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:40:53,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-21 16:40:53,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-07-21 16:40:53,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-21 16:40:53,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-07-21 16:40:53,495 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 37 [2020-07-21 16:40:53,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:40:53,496 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-07-21 16:40:53,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:40:53,497 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-07-21 16:40:53,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-21 16:40:53,502 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:40:53,503 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:40:53,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:53,704 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:40:53,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:40:53,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1493850473, now seen corresponding path program 1 times [2020-07-21 16:40:53,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:40:53,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633204184] [2020-07-21 16:40:53,708 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:53,832 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:40:53,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:40:53,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 16:40:53,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:40:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-21 16:40:53,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:40:53,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633204184] [2020-07-21 16:40:53,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:40:53,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:40:53,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877278549] [2020-07-21 16:40:53,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:40:53,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:40:53,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:40:53,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:40:53,887 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 3 states. [2020-07-21 16:40:53,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:40:53,919 INFO L93 Difference]: Finished difference Result 61 states and 80 transitions. [2020-07-21 16:40:53,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:40:53,922 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-07-21 16:40:53,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:40:53,924 INFO L225 Difference]: With dead ends: 61 [2020-07-21 16:40:53,924 INFO L226 Difference]: Without dead ends: 39 [2020-07-21 16:40:53,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:40:53,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-21 16:40:53,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-07-21 16:40:53,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-21 16:40:53,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-07-21 16:40:53,942 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 37 [2020-07-21 16:40:53,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:40:53,944 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-07-21 16:40:53,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:40:53,944 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-07-21 16:40:53,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 16:40:53,949 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:40:53,949 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:40:54,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:54,165 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:40:54,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:40:54,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1518301407, now seen corresponding path program 1 times [2020-07-21 16:40:54,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:40:54,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588293057] [2020-07-21 16:40:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:54,238 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:40:54,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:40:54,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 16:40:54,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:40:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 16:40:54,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:40:54,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588293057] [2020-07-21 16:40:54,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:40:54,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:40:54,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20022330] [2020-07-21 16:40:54,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:40:54,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:40:54,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:40:54,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:40:54,265 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 3 states. [2020-07-21 16:40:54,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:40:54,283 INFO L93 Difference]: Finished difference Result 59 states and 72 transitions. [2020-07-21 16:40:54,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:40:54,285 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-21 16:40:54,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:40:54,287 INFO L225 Difference]: With dead ends: 59 [2020-07-21 16:40:54,287 INFO L226 Difference]: Without dead ends: 40 [2020-07-21 16:40:54,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:40:54,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-21 16:40:54,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-07-21 16:40:54,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-21 16:40:54,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-07-21 16:40:54,300 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 46 [2020-07-21 16:40:54,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:40:54,301 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-07-21 16:40:54,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:40:54,301 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-07-21 16:40:54,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-21 16:40:54,304 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:40:54,304 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:40:54,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:54,520 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:40:54,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:40:54,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1198905283, now seen corresponding path program 1 times [2020-07-21 16:40:54,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:40:54,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288338681] [2020-07-21 16:40:54,521 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:54,611 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:40:54,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:40:54,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 16:40:54,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:40:54,643 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-07-21 16:40:54,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:40:54,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288338681] [2020-07-21 16:40:54,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:40:54,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:40:54,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876334819] [2020-07-21 16:40:54,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:40:54,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:40:54,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:40:54,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:40:54,649 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 3 states. [2020-07-21 16:40:54,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:40:54,671 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2020-07-21 16:40:54,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:40:54,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-07-21 16:40:54,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:40:54,674 INFO L225 Difference]: With dead ends: 70 [2020-07-21 16:40:54,674 INFO L226 Difference]: Without dead ends: 41 [2020-07-21 16:40:54,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:40:54,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-21 16:40:54,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-07-21 16:40:54,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-21 16:40:54,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-21 16:40:54,688 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 48 [2020-07-21 16:40:54,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:40:54,688 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-21 16:40:54,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:40:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-21 16:40:54,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-21 16:40:54,692 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:40:54,692 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:40:54,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:54,908 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:40:54,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:40:54,909 INFO L82 PathProgramCache]: Analyzing trace with hash 125205893, now seen corresponding path program 1 times [2020-07-21 16:40:54,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:40:54,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764563945] [2020-07-21 16:40:54,911 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:54,971 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:40:54,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:40:54,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:40:54,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:40:55,004 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-07-21 16:40:55,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:40:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-07-21 16:40:55,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764563945] [2020-07-21 16:40:55,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:40:55,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 16:40:55,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720477462] [2020-07-21 16:40:55,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 16:40:55,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:40:55,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 16:40:55,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:40:55,098 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-07-21 16:40:55,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:40:55,130 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2020-07-21 16:40:55,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:40:55,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-07-21 16:40:55,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:40:55,132 INFO L225 Difference]: With dead ends: 75 [2020-07-21 16:40:55,132 INFO L226 Difference]: Without dead ends: 46 [2020-07-21 16:40:55,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:40:55,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-21 16:40:55,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-07-21 16:40:55,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-21 16:40:55,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-07-21 16:40:55,140 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 50 [2020-07-21 16:40:55,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:40:55,140 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-07-21 16:40:55,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 16:40:55,140 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-07-21 16:40:55,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-21 16:40:55,142 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:40:55,142 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:40:55,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:55,355 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:40:55,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:40:55,357 INFO L82 PathProgramCache]: Analyzing trace with hash -463307829, now seen corresponding path program 2 times [2020-07-21 16:40:55,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:40:55,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104848726] [2020-07-21 16:40:55,358 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:55,433 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:40:55,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:40:55,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 16:40:55,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:40:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-07-21 16:40:55,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:40:55,538 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-07-21 16:40:55,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104848726] [2020-07-21 16:40:55,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:40:55,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-07-21 16:40:55,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898470422] [2020-07-21 16:40:55,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 16:40:55,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:40:55,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 16:40:55,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-07-21 16:40:55,541 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 7 states. [2020-07-21 16:40:55,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:40:55,570 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2020-07-21 16:40:55,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 16:40:55,571 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-07-21 16:40:55,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:40:55,572 INFO L225 Difference]: With dead ends: 77 [2020-07-21 16:40:55,572 INFO L226 Difference]: Without dead ends: 48 [2020-07-21 16:40:55,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-07-21 16:40:55,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-21 16:40:55,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-07-21 16:40:55,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-21 16:40:55,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-07-21 16:40:55,580 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 56 [2020-07-21 16:40:55,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:40:55,580 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-07-21 16:40:55,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 16:40:55,581 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-07-21 16:40:55,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-21 16:40:55,582 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:40:55,582 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:40:55,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:55,796 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:40:55,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:40:55,796 INFO L82 PathProgramCache]: Analyzing trace with hash 466239373, now seen corresponding path program 3 times [2020-07-21 16:40:55,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:40:55,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137525968] [2020-07-21 16:40:55,797 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:55,869 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:40:55,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:40:55,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:40:55,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:40:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 16:40:55,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:40:55,938 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-21 16:40:55,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137525968] [2020-07-21 16:40:55,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:40:55,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 16:40:55,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737268188] [2020-07-21 16:40:55,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 16:40:55,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:40:55,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 16:40:55,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:40:55,942 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 6 states. [2020-07-21 16:40:55,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:40:55,980 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2020-07-21 16:40:55,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:40:55,981 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-07-21 16:40:55,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:40:55,982 INFO L225 Difference]: With dead ends: 80 [2020-07-21 16:40:55,983 INFO L226 Difference]: Without dead ends: 55 [2020-07-21 16:40:55,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:40:55,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-21 16:40:56,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2020-07-21 16:40:56,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-21 16:40:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-07-21 16:40:56,007 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 58 [2020-07-21 16:40:56,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:40:56,008 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-07-21 16:40:56,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 16:40:56,008 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-07-21 16:40:56,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-07-21 16:40:56,009 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:40:56,010 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:40:56,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:56,225 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:40:56,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:40:56,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1145938068, now seen corresponding path program 1 times [2020-07-21 16:40:56,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:40:56,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462470818] [2020-07-21 16:40:56,227 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:56,288 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:40:56,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:40:56,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:40:56,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:40:56,320 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 85 proven. 7 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-07-21 16:40:56,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:40:56,354 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 13 proven. 127 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-07-21 16:40:56,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462470818] [2020-07-21 16:40:56,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:40:56,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-07-21 16:40:56,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877810912] [2020-07-21 16:40:56,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:40:56,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:40:56,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:40:56,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:40:56,357 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 5 states. [2020-07-21 16:40:56,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:40:56,382 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2020-07-21 16:40:56,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:40:56,382 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-07-21 16:40:56,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:40:56,383 INFO L225 Difference]: With dead ends: 81 [2020-07-21 16:40:56,383 INFO L226 Difference]: Without dead ends: 52 [2020-07-21 16:40:56,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:40:56,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-21 16:40:56,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-07-21 16:40:56,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-21 16:40:56,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2020-07-21 16:40:56,390 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 85 [2020-07-21 16:40:56,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:40:56,390 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2020-07-21 16:40:56,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:40:56,391 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2020-07-21 16:40:56,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-07-21 16:40:56,392 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:40:56,392 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:40:56,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:56,606 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:40:56,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:40:56,606 INFO L82 PathProgramCache]: Analyzing trace with hash -855759126, now seen corresponding path program 2 times [2020-07-21 16:40:56,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:40:56,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204614942] [2020-07-21 16:40:56,608 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:56,714 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:40:56,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:40:56,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 16:40:56,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:40:56,759 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 116 proven. 22 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-07-21 16:40:56,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:40:56,834 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-07-21 16:40:56,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204614942] [2020-07-21 16:40:56,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:40:56,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-07-21 16:40:56,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899249586] [2020-07-21 16:40:56,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 16:40:56,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:40:56,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 16:40:56,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-07-21 16:40:56,839 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 7 states. [2020-07-21 16:40:56,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:40:56,874 INFO L93 Difference]: Finished difference Result 84 states and 99 transitions. [2020-07-21 16:40:56,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 16:40:56,876 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2020-07-21 16:40:56,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:40:56,878 INFO L225 Difference]: With dead ends: 84 [2020-07-21 16:40:56,878 INFO L226 Difference]: Without dead ends: 55 [2020-07-21 16:40:56,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 159 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-07-21 16:40:56,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-21 16:40:56,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-07-21 16:40:56,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-21 16:40:56,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-07-21 16:40:56,889 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 85 [2020-07-21 16:40:56,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:40:56,889 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-07-21 16:40:56,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 16:40:56,890 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-07-21 16:40:56,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-07-21 16:40:56,891 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:40:56,891 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:40:57,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:57,105 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:40:57,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:40:57,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1478048176, now seen corresponding path program 3 times [2020-07-21 16:40:57,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:40:57,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901298632] [2020-07-21 16:40:57,108 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 [2020-07-21 16:40:57,278 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:40:57,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:40:57,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:40:57,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:40:57,314 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 180 proven. 1 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-21 16:40:57,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:40:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2020-07-21 16:40:57,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901298632] [2020-07-21 16:40:57,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:40:57,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 16:40:57,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823181145] [2020-07-21 16:40:57,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 16:40:57,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:40:57,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 16:40:57,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:40:57,351 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 6 states. [2020-07-21 16:40:57,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:40:57,385 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2020-07-21 16:40:57,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:40:57,386 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-07-21 16:40:57,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:40:57,387 INFO L225 Difference]: With dead ends: 87 [2020-07-21 16:40:57,387 INFO L226 Difference]: Without dead ends: 61 [2020-07-21 16:40:57,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:40:57,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-21 16:40:57,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-07-21 16:40:57,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-21 16:40:57,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-07-21 16:40:57,398 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 94 [2020-07-21 16:40:57,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:40:57,398 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-07-21 16:40:57,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 16:40:57,399 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-07-21 16:40:57,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-21 16:40:57,400 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:40:57,400 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:40:57,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:57,610 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:40:57,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:40:57,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1352614250, now seen corresponding path program 4 times [2020-07-21 16:40:57,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:40:57,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304007738] [2020-07-21 16:40:57,612 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 [2020-07-21 16:40:58,397 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:40:58,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 16:40:58,397 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:40:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 16:40:58,615 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:40:58,709 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 16:40:58,710 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 16:40:58,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:40:58,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:40:58 BoogieIcfgContainer [2020-07-21 16:40:58,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:40:58,993 INFO L168 Benchmark]: Toolchain (without parser) took 6673.48 ms. Allocated memory was 135.8 MB in the beginning and 251.7 MB in the end (delta: 115.9 MB). Free memory was 99.9 MB in the beginning and 167.5 MB in the end (delta: -67.6 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. [2020-07-21 16:40:58,993 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 135.8 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 16:40:58,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.05 ms. Allocated memory is still 135.8 MB. Free memory was 99.5 MB in the beginning and 89.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-21 16:40:58,995 INFO L168 Benchmark]: Boogie Preprocessor took 126.76 ms. Allocated memory was 135.8 MB in the beginning and 199.2 MB in the end (delta: 63.4 MB). Free memory was 89.1 MB in the beginning and 176.5 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-07-21 16:40:58,996 INFO L168 Benchmark]: RCFGBuilder took 356.35 ms. Allocated memory is still 199.2 MB. Free memory was 176.5 MB in the beginning and 158.4 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-07-21 16:40:58,997 INFO L168 Benchmark]: TraceAbstraction took 5947.28 ms. Allocated memory was 199.2 MB in the beginning and 251.7 MB in the end (delta: 52.4 MB). Free memory was 157.7 MB in the beginning and 167.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. [2020-07-21 16:40:59,000 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 135.8 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 237.05 ms. Allocated memory is still 135.8 MB. Free memory was 99.5 MB in the beginning and 89.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.76 ms. Allocated memory was 135.8 MB in the beginning and 199.2 MB in the end (delta: 63.4 MB). Free memory was 89.1 MB in the beginning and 176.5 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 356.35 ms. Allocated memory is still 199.2 MB. Free memory was 176.5 MB in the beginning and 158.4 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5947.28 ms. Allocated memory was 199.2 MB in the beginning and 251.7 MB in the end (delta: 52.4 MB). Free memory was 157.7 MB in the beginning and 167.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 50]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L31] int x[5]; VAL [x={2:0}] [L32] CALL init_nondet(x) VAL [x={2:0}] [L5] int i; [L6] i = 0 VAL [i=0, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=1, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=2, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=3, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=4, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=5, x={2:0}, x={2:0}] [L6] COND FALSE !(i < 5) VAL [i=5, x={2:0}, x={2:0}] [L32] RET init_nondet(x) VAL [x={2:0}] [L33] int temp; [L34] int ret; [L35] int ret2; [L36] int ret5; VAL [x={2:0}] [L38] CALL, EXPR rangesum(x) VAL [x={2:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=-2147483647, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=1, i=4, ret=-2147483647, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=-2147483647, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=-3, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=2, i=5, ret=-3, x={2:0}, x={2:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=-3, x={2:0}, x={2:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=-1, cnt=2, i=5, ret=-3, x={2:0}, x={2:0}] [L38] RET, EXPR rangesum(x) VAL [rangesum(x)=-1, x={2:0}] [L38] ret = rangesum(x) [L40] EXPR x[0] [L40] temp=x[0] [L40] EXPR x[1] [L40] x[0] = x[1] [L40] x[1] = temp VAL [ret=-1, temp=2147483647, x={2:0}] [L41] CALL, EXPR rangesum(x) VAL [x={2:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=-2147483647, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=1, i=4, ret=-2147483647, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=-2147483647, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=-3, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=2, i=5, ret=-3, x={2:0}, x={2:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=-3, x={2:0}, x={2:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=-1, cnt=2, i=5, ret=-3, x={2:0}, x={2:0}] [L41] RET, EXPR rangesum(x) VAL [rangesum(x)=-1, ret=-1, temp=2147483647, x={2:0}] [L41] ret2 = rangesum(x) [L42] EXPR x[0] [L42] temp=x[0] [L43] int i =0 ; VAL [i=0, ret=-1, ret2=-1, temp=2147483646, x={2:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=1, ret=-1, ret2=-1, temp=2147483646, x={2:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=2, ret=-1, ret2=-1, temp=2147483646, x={2:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=3, ret=-1, ret2=-1, temp=2147483646, x={2:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=4, ret=-1, ret2=-1, temp=2147483646, x={2:0}] [L43] COND FALSE !(i<5 -1) VAL [i=4, ret=-1, ret2=-1, temp=2147483646, x={2:0}] [L46] x[5 -1] = temp VAL [i=4, ret=-1, ret2=-1, temp=2147483646, x={2:0}] [L47] CALL, EXPR rangesum(x) VAL [x={2:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=2147483644, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=1, i=4, ret=2147483644, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=2147483644, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=4294967290, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=2, i=5, ret=4294967290, x={2:0}, x={2:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=4294967290, x={2:0}, x={2:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=2147483645, cnt=2, i=5, ret=4294967290, x={2:0}, x={2:0}] [L47] RET, EXPR rangesum(x) VAL [i=4, rangesum(x)=2147483645, ret=-1, ret2=-1, temp=2147483646, x={2:0}] [L47] ret5 = rangesum(x) [L49] COND TRUE ret != ret2 || ret !=ret5 VAL [i=4, ret=-1, ret2=-1, ret5=2147483645, temp=2147483646, x={2:0}] [L50] __VERIFIER_error() VAL [i=4, ret=-1, ret2=-1, ret5=2147483645, temp=2147483646, x={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.8s, OverallIterations: 11, TraceHistogramMax: 15, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 360 SDtfs, 50 SDslu, 533 SDs, 0 SdLazy, 109 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1014 GetRequests, 973 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 8 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 696 NumberOfCodeBlocks, 636 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1008 ConstructedInterpolants, 0 QuantifiedInterpolants, 81750 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1806 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 1933/2287 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...