/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:02:56,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:02:56,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:02:57,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 01:02:57,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 01:02:57,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 01:02:57,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 01:02:57,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 01:02:57,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 01:02:57,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 01:02:57,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 01:02:57,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 01:02:57,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:02:57,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:02:57,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:02:57,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:02:57,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:02:57,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:02:57,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:02:57,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:02:57,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:02:57,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:02:57,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:02:57,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:02:57,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:02:57,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:02:57,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:02:57,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:02:57,149 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 01:02:57,206 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:02:57,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:02:57,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:02:57,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:02:57,212 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:02:57,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:02:57,216 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:02:57,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:02:57,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:02:57,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:02:57,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:02:57,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:02:57,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:02:57,218 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:02:57,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:02:57,218 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:02:57,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:02:57,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:02:57,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:02:57,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:02:57,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:02:57,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:02:57,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:02:57,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:02:57,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:02:57,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:02:57,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:02:57,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:02:57,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:02:57,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 01:02:57,674 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:02:57,696 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:02:57,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:02:57,705 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:02:57,706 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:02:57,708 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-07-21 01:02:57,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fc37e72b/5da9f56284d247f799809c1037ac9d03/FLAG50a2aecd5 [2020-07-21 01:02:58,524 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:02:58,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-07-21 01:02:58,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fc37e72b/5da9f56284d247f799809c1037ac9d03/FLAG50a2aecd5 [2020-07-21 01:02:58,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fc37e72b/5da9f56284d247f799809c1037ac9d03 [2020-07-21 01:02:58,774 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:02:58,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:02:58,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:02:58,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:02:58,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:02:58,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:02:58" (1/1) ... [2020-07-21 01:02:58,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e552092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:58, skipping insertion in model container [2020-07-21 01:02:58,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:02:58" (1/1) ... [2020-07-21 01:02:58,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:02:58,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:02:59,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:02:59,086 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:02:59,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:02:59,129 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:02:59,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:59 WrapperNode [2020-07-21 01:02:59,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:02:59,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:02:59,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:02:59,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:02:59,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:59" (1/1) ... [2020-07-21 01:02:59,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:59" (1/1) ... [2020-07-21 01:02:59,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:59" (1/1) ... [2020-07-21 01:02:59,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:59" (1/1) ... [2020-07-21 01:02:59,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:59" (1/1) ... [2020-07-21 01:02:59,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:59" (1/1) ... [2020-07-21 01:02:59,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:59" (1/1) ... [2020-07-21 01:02:59,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:02:59,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:02:59,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:02:59,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:02:59,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:59" (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 01:02:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:02:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:02:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2020-07-21 01:02:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-21 01:02:59,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:02:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:02:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-21 01:02:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2020-07-21 01:02:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 01:02:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 01:02:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:02:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 01:02:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 01:02:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 01:02:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:02:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:02:59,768 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:02:59,769 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 01:02:59,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:02:59 BoogieIcfgContainer [2020-07-21 01:02:59,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:02:59,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:02:59,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:02:59,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:02:59,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:02:58" (1/3) ... [2020-07-21 01:02:59,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0c58d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:02:59, skipping insertion in model container [2020-07-21 01:02:59,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:02:59" (2/3) ... [2020-07-21 01:02:59,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0c58d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:02:59, skipping insertion in model container [2020-07-21 01:02:59,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:02:59" (3/3) ... [2020-07-21 01:02:59,822 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2020-07-21 01:02:59,854 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:02:59,872 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:02:59,905 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:02:59,975 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:02:59,975 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:02:59,976 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:02:59,976 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:02:59,976 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:02:59,976 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:02:59,976 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:02:59,977 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:03:00,017 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-21 01:03:00,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-21 01:03:00,031 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:03:00,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:03:00,033 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:03:00,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:03:00,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1703201428, now seen corresponding path program 1 times [2020-07-21 01:03:00,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:03:00,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551626359] [2020-07-21 01:03:00,055 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:03:00,197 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:03:00,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:03:00,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:03:00,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:03:00,324 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-21 01:03:00,325 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:00,345 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:00,347 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:00,348 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-21 01:03:00,433 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 01:03:00,435 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:00,443 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:00,444 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:00,445 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-07-21 01:03:00,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:03:00,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:03:00,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551626359] [2020-07-21 01:03:00,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:03:00,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:03:00,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952661749] [2020-07-21 01:03:00,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:03:00,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:03:00,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:03:00,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:03:00,517 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-07-21 01:03:00,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:03:00,681 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-07-21 01:03:00,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 01:03:00,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-21 01:03:00,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:03:00,702 INFO L225 Difference]: With dead ends: 39 [2020-07-21 01:03:00,703 INFO L226 Difference]: Without dead ends: 18 [2020-07-21 01:03:00,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:03:00,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-21 01:03:00,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-07-21 01:03:00,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-21 01:03:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-07-21 01:03:00,781 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2020-07-21 01:03:00,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:03:00,782 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-07-21 01:03:00,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:03:00,783 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-07-21 01:03:00,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 01:03:00,784 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:03:00,784 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:03:00,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:03:00,987 INFO L427 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:03:00,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:03:00,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1207469216, now seen corresponding path program 1 times [2020-07-21 01:03:00,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:03:00,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255875794] [2020-07-21 01:03:00,990 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:03:01,111 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:03:01,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:03:01,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 37 conjunts are in the unsatisfiable core [2020-07-21 01:03:01,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:03:01,139 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-21 01:03:01,140 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:01,148 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:01,149 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:01,150 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-21 01:03:01,233 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-21 01:03:01,235 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:01,240 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:01,241 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:01,242 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-21 01:03:01,351 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-21 01:03:01,354 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:01,357 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:01,358 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:01,359 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-21 01:03:01,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:03:01,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:03:01,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:03:01,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255875794] [2020-07-21 01:03:01,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:03:01,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2020-07-21 01:03:01,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757180073] [2020-07-21 01:03:01,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-21 01:03:01,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:03:01,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-21 01:03:01,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-07-21 01:03:01,779 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 17 states. [2020-07-21 01:03:02,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:03:02,310 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-07-21 01:03:02,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 01:03:02,311 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 16 [2020-07-21 01:03:02,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:03:02,315 INFO L225 Difference]: With dead ends: 32 [2020-07-21 01:03:02,316 INFO L226 Difference]: Without dead ends: 28 [2020-07-21 01:03:02,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2020-07-21 01:03:02,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-21 01:03:02,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-07-21 01:03:02,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 01:03:02,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-07-21 01:03:02,358 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 16 [2020-07-21 01:03:02,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:03:02,359 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-07-21 01:03:02,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-21 01:03:02,359 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-07-21 01:03:02,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 01:03:02,364 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:03:02,364 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:03:02,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:03:02,581 INFO L427 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:03:02,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:03:02,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1116654880, now seen corresponding path program 2 times [2020-07-21 01:03:02,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:03:02,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712360465] [2020-07-21 01:03:02,584 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:03:02,694 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:03:02,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:03:02,698 WARN L261 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 79 conjunts are in the unsatisfiable core [2020-07-21 01:03:02,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:03:02,713 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-21 01:03:02,714 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:02,718 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:02,719 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:02,720 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-21 01:03:02,771 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-21 01:03:02,773 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:02,778 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:02,779 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:02,780 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-21 01:03:02,859 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-21 01:03:02,861 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:02,865 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:02,866 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:02,867 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-21 01:03:02,968 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-21 01:03:02,970 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:02,974 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:02,975 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:02,976 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-21 01:03:03,080 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-21 01:03:03,082 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:03,085 INFO L624 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-07-21 01:03:03,086 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:03,086 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-21 01:03:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:03:03,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:03:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:03:04,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712360465] [2020-07-21 01:03:04,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:03:04,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 33 [2020-07-21 01:03:04,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929747896] [2020-07-21 01:03:04,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-21 01:03:04,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:03:04,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-21 01:03:04,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2020-07-21 01:03:04,050 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 33 states. [2020-07-21 01:03:05,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:03:05,376 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-07-21 01:03:05,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-21 01:03:05,378 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 26 [2020-07-21 01:03:05,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:03:05,381 INFO L225 Difference]: With dead ends: 52 [2020-07-21 01:03:05,382 INFO L226 Difference]: Without dead ends: 48 [2020-07-21 01:03:05,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=340, Invalid=2312, Unknown=0, NotChecked=0, Total=2652 [2020-07-21 01:03:05,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-21 01:03:05,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-07-21 01:03:05,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-21 01:03:05,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-07-21 01:03:05,429 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 26 [2020-07-21 01:03:05,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:03:05,430 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-07-21 01:03:05,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-21 01:03:05,431 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-07-21 01:03:05,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 01:03:05,437 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:03:05,437 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:03:05,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:03:05,652 INFO L427 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:03:05,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:03:05,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1667333664, now seen corresponding path program 3 times [2020-07-21 01:03:05,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:03:05,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506950750] [2020-07-21 01:03:05,655 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:03:05,795 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:03:05,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:03:05,807 WARN L261 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 163 conjunts are in the unsatisfiable core [2020-07-21 01:03:05,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:03:05,824 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-21 01:03:05,825 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:05,828 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:05,829 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:05,829 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-21 01:03:05,880 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-21 01:03:05,882 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:05,888 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:05,889 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:05,890 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-21 01:03:05,961 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-21 01:03:05,962 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:05,965 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:05,966 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:05,966 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-21 01:03:06,066 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-21 01:03:06,069 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:06,085 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:06,086 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:06,087 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-21 01:03:06,198 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-21 01:03:06,199 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:06,203 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:06,203 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:06,204 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-21 01:03:06,343 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-21 01:03:06,345 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:06,349 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:06,351 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:06,352 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-21 01:03:06,545 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-21 01:03:06,546 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:06,563 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:06,564 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:06,564 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-21 01:03:06,786 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-21 01:03:06,787 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:06,792 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:06,793 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:06,793 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-21 01:03:06,984 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-21 01:03:06,985 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:06,988 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:06,988 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:06,990 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-21 01:03:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:03:06,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:03:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:03:09,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506950750] [2020-07-21 01:03:09,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:03:09,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34] total 65 [2020-07-21 01:03:09,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337838971] [2020-07-21 01:03:09,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-07-21 01:03:09,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:03:09,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-07-21 01:03:09,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=3754, Unknown=0, NotChecked=0, Total=4160 [2020-07-21 01:03:09,284 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 65 states. [2020-07-21 01:03:11,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:03:11,779 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2020-07-21 01:03:11,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-07-21 01:03:11,782 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 46 [2020-07-21 01:03:11,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:03:11,785 INFO L225 Difference]: With dead ends: 72 [2020-07-21 01:03:11,785 INFO L226 Difference]: Without dead ends: 68 [2020-07-21 01:03:11,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1654 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=920, Invalid=8200, Unknown=0, NotChecked=0, Total=9120 [2020-07-21 01:03:11,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-21 01:03:11,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-07-21 01:03:11,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-21 01:03:11,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2020-07-21 01:03:11,805 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 46 [2020-07-21 01:03:11,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:03:11,806 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2020-07-21 01:03:11,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-07-21 01:03:11,806 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2020-07-21 01:03:11,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-07-21 01:03:11,809 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:03:11,809 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:03:12,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:03:12,025 INFO L427 AbstractCegarLoop]: === Iteration 5 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:03:12,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:03:12,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1460556000, now seen corresponding path program 4 times [2020-07-21 01:03:12,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:03:12,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741938356] [2020-07-21 01:03:12,028 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:03:12,323 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:03:12,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:03:12,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 39 conjunts are in the unsatisfiable core [2020-07-21 01:03:12,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:03:12,378 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-07-21 01:03:12,380 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:12,382 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:12,384 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:12,384 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:1 [2020-07-21 01:03:12,414 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-21 01:03:12,415 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:12,417 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:12,418 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:12,418 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-21 01:03:12,458 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-21 01:03:12,459 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:03:12,463 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:03:12,464 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:03:12,465 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:7 [2020-07-21 01:03:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2020-07-21 01:03:12,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:03:12,623 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2020-07-21 01:03:12,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741938356] [2020-07-21 01:03:12,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:03:12,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-07-21 01:03:12,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870729912] [2020-07-21 01:03:12,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 01:03:12,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:03:12,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 01:03:12,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:03:12,635 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 11 states. [2020-07-21 01:03:12,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:03:12,801 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-07-21 01:03:12,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 01:03:12,802 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2020-07-21 01:03:12,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:03:12,803 INFO L225 Difference]: With dead ends: 67 [2020-07-21 01:03:12,803 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:03:12,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-07-21 01:03:12,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:03:12,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:03:12,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:03:12,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:03:12,809 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2020-07-21 01:03:12,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:03:12,812 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:03:12,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 01:03:12,813 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:03:12,813 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:03:13,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:03:13,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:03:14,005 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 97 [2020-07-21 01:03:14,662 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 99 [2020-07-21 01:03:15,073 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-07-21 01:03:15,492 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2020-07-21 01:03:15,499 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:03:15,500 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:03:15,501 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:03:15,501 INFO L268 CegarLoopResult]: For program point fooEXIT(lines 9 18) no Hoare annotation was computed. [2020-07-21 01:03:15,502 INFO L264 CegarLoopResult]: At program point fooENTRY(lines 9 18) the Hoare annotation is: (let ((.cse1 (select (select |old(#memory_int)| |foo_#in~p.base|) |foo_#in~p.offset|)) (.cse0 (select (select |#memory_int| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or (= 12 .cse0) (not (= 12 .cse1))) (or (not (= 15 .cse1)) (= 15 .cse0)) (or (not (= 16 .cse1)) (= 16 .cse0)) (or (< .cse0 19) (not (= 19 .cse1)) (= 19 .cse0)) (or (and (not (= 18 .cse1)) (not (< .cse1 18))) (< .cse0 18) (= 18 .cse0)) (or (not (= 13 .cse1)) (= 13 .cse0)) (or (not (= 10 .cse1)) (= 10 .cse0)) (or (= 17 .cse0) (not (= 17 .cse1))) (or (= 11 .cse0) (not (= 11 .cse1))) (or (= 14 .cse0) (not (= 14 .cse1))) (or (not (<= .cse1 20)) (<= .cse0 20)))) [2020-07-21 01:03:15,502 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-07-21 01:03:15,502 INFO L268 CegarLoopResult]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-07-21 01:03:15,503 INFO L268 CegarLoopResult]: For program point L12(lines 12 17) no Hoare annotation was computed. [2020-07-21 01:03:15,503 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (let ((.cse1 (select (select |#memory_int| foo_~p.base) foo_~p.offset)) (.cse2 (select (select |#memory_int| |foo_#in~p.base|) |foo_#in~p.offset|)) (.cse0 (select (select |old(#memory_int)| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or (not (= 15 .cse0)) (and (= 15 .cse1) (= 15 .cse2))) (or (not (= 14 .cse0)) (and (= 14 .cse2) (= 14 .cse1))) (or (not (= 17 .cse0)) (and (= 17 .cse2) (or (= 17 .cse1) (< .cse1 17)))) (or (and (not (= 18 .cse0)) (not (< .cse0 18))) (and (or (< .cse2 18) (= 18 .cse2)) (or (< .cse1 18) (= 18 .cse1)))) (or (< .cse2 19) (not (= 19 .cse0)) (= 19 .cse2)) (or (not (= 11 .cse0)) (and (= 11 .cse2) (= 11 .cse1))) (or (not (= 10 .cse0)) (and (= 10 .cse1) (= 10 .cse2))) (or (and (= 12 .cse2) (= 12 .cse1)) (not (= 12 .cse0))) (or (not (= 13 .cse0)) (and (= 13 .cse2) (= 13 .cse1))) (or (not (<= .cse0 20)) (and (<= .cse1 19) (<= .cse2 20))) (or (and (= 16 .cse1) (= 16 .cse2)) (not (= 16 .cse0))))) [2020-07-21 01:03:15,503 INFO L268 CegarLoopResult]: For program point L10(lines 10 17) no Hoare annotation was computed. [2020-07-21 01:03:15,504 INFO L268 CegarLoopResult]: For program point L10-1(lines 9 18) no Hoare annotation was computed. [2020-07-21 01:03:15,504 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:03:15,504 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 01:03:15,504 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:03:15,504 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:03:15,504 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 20 26) the Hoare annotation is: true [2020-07-21 01:03:15,505 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 26) no Hoare annotation was computed. [2020-07-21 01:03:15,505 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (= 10 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset)) [2020-07-21 01:03:15,505 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 26) no Hoare annotation was computed. [2020-07-21 01:03:15,505 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-07-21 01:03:15,506 INFO L268 CegarLoopResult]: For program point plusFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-21 01:03:15,506 INFO L264 CegarLoopResult]: At program point plusENTRY(lines 4 7) the Hoare annotation is: (let ((.cse1 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse0 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (not (= 12 .cse0)) (= 12 .cse1)) (or (= 11 .cse1) (not (= 11 .cse0))) (or (not (= 18 .cse0)) (< .cse1 18) (= 18 .cse1)) (or (= 16 .cse1) (not (= 16 .cse0))) (or (not (= 10 .cse0)) (= 10 .cse1)) (or (= 14 .cse1) (not (= 14 .cse0))) (or (not (= 13 .cse0)) (= 13 .cse1)) (or (not (<= .cse0 19)) (< .cse1 19) (= 19 .cse1)) (or (= 17 .cse1) (and (not (< .cse0 17)) (not (= 17 .cse0))) (< .cse1 17)) (or (= 15 .cse1) (not (= 15 .cse0))))) [2020-07-21 01:03:15,506 INFO L268 CegarLoopResult]: For program point plusEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-21 01:03:15,507 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (let ((.cse1 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse2 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse0 (select (select |#memory_int| plus_~p.base) plus_~p.offset))) (and (or (and (= 15 .cse0) (= 15 .cse1)) (not (= 14 .cse2))) (or (and (or (= 18 .cse0) (< .cse0 18)) (or (< .cse1 18) (= 18 .cse1))) (and (not (< .cse2 17)) (not (= 17 .cse2)))) (or (not (= 18 .cse2)) (and (or (= 19 .cse0) (< .cse0 19)) (or (< .cse1 19) (= 19 .cse1)))) (or (not (= 13 .cse2)) (and (= 14 .cse0) (= 14 .cse1))) (or (and (= 16 .cse1) (= 16 .cse0)) (not (= 15 .cse2))) (or (and (or (= 17 .cse1) (< .cse1 17)) (= 17 .cse0)) (not (= 16 .cse2))) (or (not (= 11 .cse2)) (and (= 12 .cse0) (= 12 .cse1))) (or (and (= 11 .cse1) (= 11 .cse0)) (not (= 10 .cse2))) (or (not (= 12 .cse2)) (and (= 13 .cse1) (= 13 .cse0))) (or (< .cse0 20) (not (<= .cse2 19)) (= 20 .cse0)))) [2020-07-21 01:03:15,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:03:15 BoogieIcfgContainer [2020-07-21 01:03:15,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:03:15,520 INFO L168 Benchmark]: Toolchain (without parser) took 16744.33 ms. Allocated memory was 144.7 MB in the beginning and 323.5 MB in the end (delta: 178.8 MB). Free memory was 100.9 MB in the beginning and 96.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 183.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:03:15,522 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 144.7 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 01:03:15,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.05 ms. Allocated memory is still 144.7 MB. Free memory was 100.5 MB in the beginning and 91.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-21 01:03:15,524 INFO L168 Benchmark]: Boogie Preprocessor took 192.48 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 91.0 MB in the beginning and 183.0 MB in the end (delta: -92.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-21 01:03:15,524 INFO L168 Benchmark]: RCFGBuilder took 454.87 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 168.4 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-07-21 01:03:15,525 INFO L168 Benchmark]: TraceAbstraction took 15735.37 ms. Allocated memory was 204.5 MB in the beginning and 323.5 MB in the end (delta: 119.0 MB). Free memory was 167.8 MB in the beginning and 96.6 MB in the end (delta: 71.1 MB). Peak memory consumption was 190.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:03:15,529 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 144.7 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 351.05 ms. Allocated memory is still 144.7 MB. Free memory was 100.5 MB in the beginning and 91.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 192.48 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 91.0 MB in the beginning and 183.0 MB in the end (delta: -92.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 454.87 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 168.4 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15735.37 ms. Allocated memory was 204.5 MB in the beginning and 323.5 MB in the end (delta: 119.0 MB). Free memory was 167.8 MB in the beginning and 96.6 MB in the end (delta: 71.1 MB). Peak memory consumption was 190.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.0s, OverallIterations: 5, TraceHistogramMax: 12, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 51 SDslu, 442 SDs, 0 SdLazy, 1358 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 375 GetRequests, 190 SyntacticMatches, 3 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2089 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=4, 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, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 51 PreInvPairs, 51 NumberOfFragments, 988 HoareAnnotationTreeSize, 51 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1461 FormulaSimplificationTreeSizeReductionInter, 2.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 165 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 310 ConstructedInterpolants, 0 QuantifiedInterpolants, 67570 SizeOfPredicates, 102 NumberOfNonLiveVariables, 881 ConjunctsInSsa, 331 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 592/878 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...