/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_FUNCTIONS --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 [2020-07-20 13:47:55,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:47:55,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:47:55,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:47:55,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:47:55,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:47:55,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:47:55,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:47:55,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:47:55,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:47:55,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:47:55,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:47:55,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:47:55,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:47:55,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:47:55,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:47:55,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:47:55,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:47:55,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:47:55,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:47:55,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:47:55,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:47:55,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:47:55,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:47:55,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 13:47:55,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:47:55,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:47:55,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:47:55,098 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 13:47:55,135 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:47:55,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:47:55,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:47:55,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:47:55,141 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:47:55,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:47:55,141 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:47:55,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:47:55,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:47:55,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:47:55,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:47:55,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:47:55,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:47:55,143 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:47:55,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:47:55,143 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:47:55,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:47:55,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:47:55,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:47:55,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:47:55,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:47:55,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:47:55,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:47:55,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:47:55,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:47:55,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:47:55,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:47:55,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:47:55,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:47:55,147 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_FUNCTIONS 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 [2020-07-20 13:47:55,473 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:47:55,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:47:55,491 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:47:55,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:47:55,493 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:47:55,493 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-07-20 13:47:55,558 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d14bfe9/aca2ae38b8a34b5883620d553611787c/FLAGb04945c17 [2020-07-20 13:47:56,066 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:47:56,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-07-20 13:47:56,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d14bfe9/aca2ae38b8a34b5883620d553611787c/FLAGb04945c17 [2020-07-20 13:47:56,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d14bfe9/aca2ae38b8a34b5883620d553611787c [2020-07-20 13:47:56,395 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:47:56,397 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:47:56,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:47:56,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:47:56,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:47:56,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:47:56" (1/1) ... [2020-07-20 13:47:56,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b899ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:56, skipping insertion in model container [2020-07-20 13:47:56,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:47:56" (1/1) ... [2020-07-20 13:47:56,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:47:56,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:47:56,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:47:56,606 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:47:56,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:47:56,640 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:47:56,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:56 WrapperNode [2020-07-20 13:47:56,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:47:56,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:47:56,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:47:56,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:47:56,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:56" (1/1) ... [2020-07-20 13:47:56,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:56" (1/1) ... [2020-07-20 13:47:56,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:56" (1/1) ... [2020-07-20 13:47:56,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:56" (1/1) ... [2020-07-20 13:47:56,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:56" (1/1) ... [2020-07-20 13:47:56,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:56" (1/1) ... [2020-07-20 13:47:56,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:56" (1/1) ... [2020-07-20 13:47:56,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:47:56,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:47:56,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:47:56,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:47:56,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:47:56,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:47:56,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:47:56,838 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2020-07-20 13:47:56,838 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-20 13:47:56,838 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:47:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:47:56,839 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-20 13:47:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2020-07-20 13:47:56,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:47:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:47:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:47:56,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:47:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 13:47:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:47:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:47:56,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:47:57,080 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:47:57,080 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 13:47:57,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:47:57 BoogieIcfgContainer [2020-07-20 13:47:57,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:47:57,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:47:57,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:47:57,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:47:57,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:47:56" (1/3) ... [2020-07-20 13:47:57,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22eab8da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:47:57, skipping insertion in model container [2020-07-20 13:47:57,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:47:56" (2/3) ... [2020-07-20 13:47:57,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22eab8da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:47:57, skipping insertion in model container [2020-07-20 13:47:57,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:47:57" (3/3) ... [2020-07-20 13:47:57,093 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2020-07-20 13:47:57,105 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:47:57,114 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:47:57,134 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:47:57,172 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:47:57,172 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:47:57,173 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:47:57,173 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:47:57,173 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:47:57,173 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:47:57,173 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:47:57,173 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:47:57,210 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-20 13:47:57,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 13:47:57,227 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:47:57,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:47:57,229 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:47:57,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:47:57,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1703201428, now seen corresponding path program 1 times [2020-07-20 13:47:57,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:47:57,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792140429] [2020-07-20 13:47:57,275 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 [2020-07-20 13:47:57,396 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:47:57,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:47:57,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 13:47:57,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:47:57,467 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 [2020-07-20 13:47:57,469 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:47:57,481 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:47:57,481 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:47:57,482 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 13:47:57,537 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 [2020-07-20 13:47:57,544 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:47:57,548 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:47:57,549 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:47:57,549 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-07-20 13:47:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:47:57,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:47:57,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792140429] [2020-07-20 13:47:57,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:47:57,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 13:47:57,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871806292] [2020-07-20 13:47:57,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 13:47:57,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:47:57,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 13:47:57,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:47:57,604 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-07-20 13:47:57,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:47:57,701 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-07-20 13:47:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 13:47:57,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-20 13:47:57,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:47:57,716 INFO L225 Difference]: With dead ends: 39 [2020-07-20 13:47:57,716 INFO L226 Difference]: Without dead ends: 18 [2020-07-20 13:47:57,721 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 [2020-07-20 13:47:57,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-20 13:47:57,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-07-20 13:47:57,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-20 13:47:57,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-07-20 13:47:57,773 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2020-07-20 13:47:57,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:47:57,774 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-07-20 13:47:57,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 13:47:57,774 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-07-20 13:47:57,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 13:47:57,775 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:47:57,776 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:47:57,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:47:57,991 INFO L427 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:47:57,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:47:57,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1207469216, now seen corresponding path program 1 times [2020-07-20 13:47:57,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:47:57,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886545118] [2020-07-20 13:47:57,994 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 [2020-07-20 13:47:58,068 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:47:58,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:47:58,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 37 conjunts are in the unsatisfiable core [2020-07-20 13:47:58,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:47:58,085 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 [2020-07-20 13:47:58,086 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:47:58,090 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:47:58,091 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:47:58,091 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 13:47:58,142 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 [2020-07-20 13:47:58,144 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:47:58,147 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:47:58,147 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:47:58,148 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:47:58,215 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 [2020-07-20 13:47:58,216 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:47:58,219 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:47:58,219 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:47:58,220 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 13:47:58,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:47:58,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:47:58,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:47:58,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886545118] [2020-07-20 13:47:58,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 13:47:58,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2020-07-20 13:47:58,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920387277] [2020-07-20 13:47:58,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-20 13:47:58,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:47:58,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-20 13:47:58,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-07-20 13:47:58,523 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 17 states. [2020-07-20 13:47:58,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:47:58,849 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-07-20 13:47:58,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 13:47:58,849 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 16 [2020-07-20 13:47:58,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:47:58,851 INFO L225 Difference]: With dead ends: 32 [2020-07-20 13:47:58,851 INFO L226 Difference]: Without dead ends: 28 [2020-07-20 13:47:58,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2020-07-20 13:47:58,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-20 13:47:58,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-07-20 13:47:58,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-20 13:47:58,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-07-20 13:47:58,861 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 16 [2020-07-20 13:47:58,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:47:58,861 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-07-20 13:47:58,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-20 13:47:58,862 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-07-20 13:47:58,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 13:47:58,863 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:47:58,863 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:47:59,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:47:59,073 INFO L427 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:47:59,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:47:59,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1116654880, now seen corresponding path program 2 times [2020-07-20 13:47:59,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:47:59,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847747603] [2020-07-20 13:47:59,075 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 [2020-07-20 13:47:59,152 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:47:59,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:47:59,156 WARN L261 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 79 conjunts are in the unsatisfiable core [2020-07-20 13:47:59,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:47:59,172 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 [2020-07-20 13:47:59,173 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:47:59,177 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:47:59,177 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:47:59,178 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 13:47:59,214 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 [2020-07-20 13:47:59,215 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:47:59,218 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:47:59,219 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:47:59,219 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:47:59,277 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 [2020-07-20 13:47:59,278 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:47:59,281 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:47:59,281 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:47:59,282 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:47:59,353 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 [2020-07-20 13:47:59,355 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:47:59,357 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:47:59,358 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:47:59,358 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:47:59,442 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 [2020-07-20 13:47:59,444 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:47:59,448 INFO L624 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-07-20 13:47:59,448 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:47:59,448 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 13:47:59,452 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:47:59,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:48:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:48:00,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847747603] [2020-07-20 13:48:00,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 13:48:00,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 33 [2020-07-20 13:48:00,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942275926] [2020-07-20 13:48:00,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-20 13:48:00,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:48:00,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-20 13:48:00,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2020-07-20 13:48:00,088 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 33 states. [2020-07-20 13:48:01,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:48:01,005 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-07-20 13:48:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-20 13:48:01,007 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 26 [2020-07-20 13:48:01,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:48:01,009 INFO L225 Difference]: With dead ends: 52 [2020-07-20 13:48:01,009 INFO L226 Difference]: Without dead ends: 48 [2020-07-20 13:48:01,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=340, Invalid=2312, Unknown=0, NotChecked=0, Total=2652 [2020-07-20 13:48:01,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-20 13:48:01,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-07-20 13:48:01,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 13:48:01,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-07-20 13:48:01,038 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 26 [2020-07-20 13:48:01,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:48:01,038 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-07-20 13:48:01,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-20 13:48:01,039 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-07-20 13:48:01,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 13:48:01,043 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:48:01,043 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:48:01,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:48:01,257 INFO L427 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:48:01,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:48:01,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1667333664, now seen corresponding path program 3 times [2020-07-20 13:48:01,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:48:01,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92423715] [2020-07-20 13:48:01,260 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 [2020-07-20 13:48:01,397 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:48:01,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:48:01,421 WARN L261 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 163 conjunts are in the unsatisfiable core [2020-07-20 13:48:01,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:48:01,464 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 [2020-07-20 13:48:01,465 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:01,469 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:01,470 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:01,470 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 13:48:01,504 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 [2020-07-20 13:48:01,505 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:01,514 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:01,515 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:01,515 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:48:01,575 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 [2020-07-20 13:48:01,576 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:01,580 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:01,581 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:01,581 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:48:01,654 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 [2020-07-20 13:48:01,655 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:01,663 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:01,664 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:01,664 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:48:01,753 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 [2020-07-20 13:48:01,754 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:01,757 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:01,758 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:01,758 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:48:01,869 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 [2020-07-20 13:48:01,870 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:01,873 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:01,873 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:01,874 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:48:02,001 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 [2020-07-20 13:48:02,003 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:02,007 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:02,008 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:02,008 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:48:02,180 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 [2020-07-20 13:48:02,181 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:02,184 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:02,184 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:02,185 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:48:02,338 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 [2020-07-20 13:48:02,339 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:02,341 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:02,341 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:02,342 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 13:48:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:48:02,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:48:04,190 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:48:04,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92423715] [2020-07-20 13:48:04,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 13:48:04,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34] total 65 [2020-07-20 13:48:04,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811801131] [2020-07-20 13:48:04,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-07-20 13:48:04,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:48:04,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-07-20 13:48:04,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=3754, Unknown=0, NotChecked=0, Total=4160 [2020-07-20 13:48:04,195 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 65 states. [2020-07-20 13:48:06,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:48:06,143 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2020-07-20 13:48:06,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-07-20 13:48:06,144 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 46 [2020-07-20 13:48:06,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:48:06,146 INFO L225 Difference]: With dead ends: 72 [2020-07-20 13:48:06,146 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 13:48:06,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1654 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=920, Invalid=8200, Unknown=0, NotChecked=0, Total=9120 [2020-07-20 13:48:06,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 13:48:06,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-07-20 13:48:06,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-20 13:48:06,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2020-07-20 13:48:06,162 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 46 [2020-07-20 13:48:06,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:48:06,163 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2020-07-20 13:48:06,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-07-20 13:48:06,163 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2020-07-20 13:48:06,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-07-20 13:48:06,165 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:48:06,166 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:48:06,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:48:06,379 INFO L427 AbstractCegarLoop]: === Iteration 5 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:48:06,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:48:06,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1460556000, now seen corresponding path program 4 times [2020-07-20 13:48:06,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:48:06,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268051016] [2020-07-20 13:48:06,382 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 [2020-07-20 13:48:06,745 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:48:06,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:48:06,755 WARN L261 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 223 conjunts are in the unsatisfiable core [2020-07-20 13:48:06,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:48:06,775 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 [2020-07-20 13:48:06,776 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:06,778 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:06,778 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:06,778 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 13:48:06,802 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 [2020-07-20 13:48:06,803 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:06,805 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:06,806 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:06,806 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:48:06,853 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 [2020-07-20 13:48:06,854 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:06,856 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:06,857 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:06,857 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:48:06,916 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 [2020-07-20 13:48:06,917 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:06,918 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:06,919 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:06,919 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:48:06,998 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 [2020-07-20 13:48:06,999 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:07,001 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:07,001 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:07,001 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:48:07,103 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 [2020-07-20 13:48:07,104 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:07,106 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:07,107 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:07,107 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:48:07,226 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 [2020-07-20 13:48:07,227 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:07,228 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:07,229 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:07,229 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:48:07,362 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 [2020-07-20 13:48:07,364 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:07,369 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:07,369 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:07,369 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:48:07,543 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 [2020-07-20 13:48:07,544 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:07,546 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:07,546 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:07,547 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:48:07,727 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 [2020-07-20 13:48:07,728 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:07,729 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:07,730 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:07,730 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:48:07,934 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 [2020-07-20 13:48:07,935 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:07,938 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:07,938 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:07,938 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 13:48:08,042 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 [2020-07-20 13:48:08,043 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:48:08,045 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:48:08,045 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:48:08,045 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-07-20 13:48:08,111 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 52 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:48:08,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:48:11,063 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 287 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:48:11,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268051016] [2020-07-20 13:48:11,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 13:48:11,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 87 [2020-07-20 13:48:11,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998346554] [2020-07-20 13:48:11,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-07-20 13:48:11,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:48:11,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-07-20 13:48:11,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=593, Invalid=6889, Unknown=0, NotChecked=0, Total=7482 [2020-07-20 13:48:11,069 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 87 states. [2020-07-20 13:48:13,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:48:13,088 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-07-20 13:48:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-07-20 13:48:13,088 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 66 [2020-07-20 13:48:13,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:48:13,089 INFO L225 Difference]: With dead ends: 67 [2020-07-20 13:48:13,089 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 13:48:13,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=926, Invalid=10630, Unknown=0, NotChecked=0, Total=11556 [2020-07-20 13:48:13,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 13:48:13,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 13:48:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 13:48:13,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 13:48:13,095 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2020-07-20 13:48:13,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:48:13,095 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 13:48:13,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-07-20 13:48:13,095 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 13:48:13,095 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 13:48:13,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:48:13,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 13:48:13,793 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 84 [2020-07-20 13:48:14,044 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 86 [2020-07-20 13:48:14,227 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2020-07-20 13:48:14,413 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-07-20 13:48:14,419 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 13:48:14,419 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 13:48:14,419 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 13:48:14,419 INFO L268 CegarLoopResult]: For program point fooEXIT(lines 9 18) no Hoare annotation was computed. [2020-07-20 13:48:14,420 INFO L264 CegarLoopResult]: At program point fooENTRY(lines 9 18) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |foo_#in~p.base|) |foo_#in~p.offset|)) (.cse1 (select (select |old(#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 (not (= 20 .cse1)) (= 20 .cse0)) (or (not (= 13 .cse1)) (= 13 .cse0)) (or (not (= 10 .cse1)) (= 10 .cse0)) (or (= 17 .cse0) (not (= 17 .cse1))) (or (not (= 19 .cse1)) (= 19 .cse0)) (or (not (= 18 .cse1)) (= 18 .cse0)) (or (= 11 .cse0) (not (= 11 .cse1))) (or (= 14 .cse0) (not (= 14 .cse1))))) [2020-07-20 13:48:14,420 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-07-20 13:48:14,420 INFO L268 CegarLoopResult]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-07-20 13:48:14,420 INFO L268 CegarLoopResult]: For program point L12(lines 12 17) no Hoare annotation was computed. [2020-07-20 13:48:14,421 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 (not (= 20 .cse0)) (or (not (= 15 .cse0)) (and (= 15 .cse1) (= 15 .cse2))) (or (not (= 19 .cse0)) (and (= 19 .cse1) (= 19 .cse2))) (or (not (= 14 .cse0)) (and (= 14 .cse2) (= 14 .cse1))) (or (not (= 17 .cse0)) (and (= 17 .cse1) (= 17 .cse2))) (or (not (= 11 .cse0)) (and (= 11 .cse2) (= 11 .cse1))) (or (and (= 12 .cse2) (= 12 .cse1)) (not (= 12 .cse0))) (or (not (= 10 .cse0)) (and (= 10 .cse1) (= 10 .cse2))) (or (not (= 18 .cse0)) (and (= 18 .cse1) (= 18 .cse2))) (or (not (= 13 .cse0)) (and (= 13 .cse2) (= 13 .cse1))) (or (and (= 16 .cse1) (= 16 .cse2)) (not (= 16 .cse0))))) [2020-07-20 13:48:14,421 INFO L268 CegarLoopResult]: For program point L10(lines 10 17) no Hoare annotation was computed. [2020-07-20 13:48:14,421 INFO L268 CegarLoopResult]: For program point L10-1(lines 9 18) no Hoare annotation was computed. [2020-07-20 13:48:14,421 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 13:48:14,421 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 13:48:14,421 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 13:48:14,421 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 13:48:14,422 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 20 26) the Hoare annotation is: true [2020-07-20 13:48:14,422 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 26) no Hoare annotation was computed. [2020-07-20 13:48:14,422 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)) [2020-07-20 13:48:14,422 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 26) no Hoare annotation was computed. [2020-07-20 13:48:14,422 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-07-20 13:48:14,422 INFO L268 CegarLoopResult]: For program point plusFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-20 13:48:14,422 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 (not (= 11 .cse0)) (= 11 .cse1)) (or (= 17 .cse1) (not (= 17 .cse0))) (or (= 16 .cse1) (not (= 16 .cse0))) (or (not (= 10 .cse0)) (= 10 .cse1)) (or (not (= 13 .cse0)) (= 13 .cse1)) (or (= 14 .cse1) (not (= 14 .cse0))) (or (not (= 19 .cse0)) (= 19 .cse1)) (or (not (= 18 .cse0)) (= 18 .cse1)) (or (= 15 .cse1) (not (= 15 .cse0))))) [2020-07-20 13:48:14,423 INFO L268 CegarLoopResult]: For program point plusEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-20 13:48:14,423 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (let ((.cse2 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse1 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse0 (select (select |#memory_int| plus_~p.base) plus_~p.offset))) (and (or (and (= 18 .cse0) (= 18 .cse1)) (not (= 17 .cse2))) (or (and (= 15 .cse0) (= 15 .cse1)) (not (= 14 .cse2))) (or (not (= 18 .cse2)) (and (= 19 .cse0) (= 19 .cse1))) (or (and (< 18 .cse1) (= 20 .cse0)) (not (= 19 .cse2))) (or (and (= 16 .cse1) (= 16 .cse0)) (not (= 15 .cse2))) (or (not (= 13 .cse2)) (and (= 14 .cse0) (= 14 .cse1))) (or (and (= 11 .cse1) (= 11 .cse0)) (not (= 10 .cse2))) (or (not (= 11 .cse2)) (and (= 12 .cse0) (= 12 .cse1))) (or (and (= 17 .cse1) (= 17 .cse0)) (not (= 16 .cse2))) (or (not (= 12 .cse2)) (and (= 13 .cse1) (= 13 .cse0))))) [2020-07-20 13:48:14,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:48:14 BoogieIcfgContainer [2020-07-20 13:48:14,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:48:14,431 INFO L168 Benchmark]: Toolchain (without parser) took 18034.60 ms. Allocated memory was 144.7 MB in the beginning and 373.8 MB in the end (delta: 229.1 MB). Free memory was 101.0 MB in the beginning and 216.6 MB in the end (delta: -115.6 MB). Peak memory consumption was 218.5 MB. Max. memory is 7.1 GB. [2020-07-20 13:48:14,432 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 13:48:14,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.47 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: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-20 13:48:14,433 INFO L168 Benchmark]: Boogie Preprocessor took 136.29 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 91.0 MB in the beginning and 180.5 MB in the end (delta: -89.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-20 13:48:14,434 INFO L168 Benchmark]: RCFGBuilder took 305.10 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 165.9 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-07-20 13:48:14,434 INFO L168 Benchmark]: TraceAbstraction took 17343.84 ms. Allocated memory was 202.4 MB in the beginning and 373.8 MB in the end (delta: 171.4 MB). Free memory was 165.9 MB in the beginning and 216.6 MB in the end (delta: -50.7 MB). Peak memory consumption was 225.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:48:14,437 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 243.47 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: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.29 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 91.0 MB in the beginning and 180.5 MB in the end (delta: -89.5 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 305.10 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 165.9 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17343.84 ms. Allocated memory was 202.4 MB in the beginning and 373.8 MB in the end (delta: 171.4 MB). Free memory was 165.9 MB in the beginning and 216.6 MB in the end (delta: -50.7 MB). Peak memory consumption was 225.8 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: 16.1s, OverallIterations: 5, TraceHistogramMax: 12, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 95 SDslu, 838 SDs, 0 SdLazy, 2607 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 393 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2966 ImplicationChecksByTransitivity, 10.8s 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 51 PreInvPairs, 51 NumberOfFragments, 839 HoareAnnotationTreeSize, 51 FomulaSimplifications, 261 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 815 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 165 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 310 ConstructedInterpolants, 0 QuantifiedInterpolants, 101370 SizeOfPredicates, 156 NumberOfNonLiveVariables, 849 ConjunctsInSsa, 515 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 339/878 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...