/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 DAGSIZE --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 21:46:20,400 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-20 21:46:20,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:46:20,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:46:20,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:46:20,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:46:20,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:46:20,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:46:20,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:46:20,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:46:20,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:46:20,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:46:20,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:46:20,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:46:20,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:46:20,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:46:20,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:46:20,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:46:20,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:46:20,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:46:20,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:46:20,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:46:20,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 21:46:20,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:46:20,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:46:20,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:46:20,554 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 21:46:20,608 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:46:20,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:46:20,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:46:20,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:46:20,613 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:46:20,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:46:20,613 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:46:20,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:46:20,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:46:20,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:46:20,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:46:20,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:46:20,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:46:20,618 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:46:20,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:46:20,619 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:46:20,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:46:20,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:46:20,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:46:20,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:46:20,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:46:20,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:46:20,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:46:20,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:46:20,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:46:20,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:46:20,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:46:20,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:46:20,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:46:20,623 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 -> DAGSIZE 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 21:46:21,168 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:46:21,190 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:46:21,197 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:46:21,200 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:46:21,201 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:46:21,203 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-07-20 21:46:21,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f0696b18/14e1198884ec426d9aa28ab812d0136f/FLAGeff30f372 [2020-07-20 21:46:22,081 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:46:22,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-07-20 21:46:22,095 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f0696b18/14e1198884ec426d9aa28ab812d0136f/FLAGeff30f372 [2020-07-20 21:46:22,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f0696b18/14e1198884ec426d9aa28ab812d0136f [2020-07-20 21:46:22,141 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:46:22,147 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:46:22,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:46:22,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:46:22,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:46:22,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:46:22" (1/1) ... [2020-07-20 21:46:22,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@925624e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:46:22, skipping insertion in model container [2020-07-20 21:46:22,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:46:22" (1/1) ... [2020-07-20 21:46:22,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:46:22,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:46:22,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:46:22,464 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:46:22,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:46:22,518 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:46:22,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:46:22 WrapperNode [2020-07-20 21:46:22,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:46:22,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:46:22,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:46:22,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:46:22,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:46:22" (1/1) ... [2020-07-20 21:46:22,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:46:22" (1/1) ... [2020-07-20 21:46:22,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:46:22" (1/1) ... [2020-07-20 21:46:22,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:46:22" (1/1) ... [2020-07-20 21:46:22,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:46:22" (1/1) ... [2020-07-20 21:46:22,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:46:22" (1/1) ... [2020-07-20 21:46:22,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:46:22" (1/1) ... [2020-07-20 21:46:22,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:46:22,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:46:22,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:46:22,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:46:22,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:46:22" (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 21:46:22,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:46:22,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:46:22,809 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2020-07-20 21:46:22,809 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-20 21:46:22,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:46:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:46:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-20 21:46:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2020-07-20 21:46:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 21:46:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 21:46:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:46:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 21:46:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 21:46:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 21:46:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:46:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:46:23,201 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:46:23,202 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 21:46:23,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:46:23 BoogieIcfgContainer [2020-07-20 21:46:23,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:46:23,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:46:23,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:46:23,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:46:23,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:46:22" (1/3) ... [2020-07-20 21:46:23,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be2cabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:46:23, skipping insertion in model container [2020-07-20 21:46:23,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:46:22" (2/3) ... [2020-07-20 21:46:23,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be2cabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:46:23, skipping insertion in model container [2020-07-20 21:46:23,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:46:23" (3/3) ... [2020-07-20 21:46:23,260 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2020-07-20 21:46:23,277 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:46:23,289 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:46:23,312 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:46:23,345 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:46:23,346 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:46:23,346 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:46:23,346 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:46:23,346 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:46:23,346 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:46:23,347 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:46:23,347 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:46:23,373 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-20 21:46:23,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 21:46:23,383 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:46:23,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:46:23,385 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:46:23,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:46:23,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1703201428, now seen corresponding path program 1 times [2020-07-20 21:46:23,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:46:23,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372568006] [2020-07-20 21:46:23,406 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 21:46:23,542 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:46:23,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:46:23,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 21:46:23,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:46:23,649 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 21:46:23,650 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:23,668 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:23,669 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:23,670 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 21:46:23,740 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 21:46:23,742 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:23,754 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:23,755 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 21:46:23,756 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-07-20 21:46:23,793 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 21:46:23,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:46:23,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372568006] [2020-07-20 21:46:23,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:46:23,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 21:46:23,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023325290] [2020-07-20 21:46:23,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 21:46:23,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:46:23,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 21:46:23,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 21:46:23,831 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-07-20 21:46:23,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:46:23,982 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-07-20 21:46:23,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 21:46:23,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-20 21:46:23,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:46:24,005 INFO L225 Difference]: With dead ends: 39 [2020-07-20 21:46:24,005 INFO L226 Difference]: Without dead ends: 18 [2020-07-20 21:46:24,013 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 21:46:24,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-20 21:46:24,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-07-20 21:46:24,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-20 21:46:24,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-07-20 21:46:24,092 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2020-07-20 21:46:24,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:46:24,093 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-07-20 21:46:24,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 21:46:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-07-20 21:46:24,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 21:46:24,095 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:46:24,096 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:46:24,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:46:24,312 INFO L427 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:46:24,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:46:24,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1207469216, now seen corresponding path program 1 times [2020-07-20 21:46:24,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:46:24,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649973437] [2020-07-20 21:46:24,315 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 21:46:24,438 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:46:24,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:46:24,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 37 conjunts are in the unsatisfiable core [2020-07-20 21:46:24,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:46:24,476 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 21:46:24,479 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:24,490 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:24,491 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:24,492 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 21:46:24,593 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 21:46:24,595 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:24,599 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:24,600 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:24,600 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:24,688 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 21:46:24,690 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:24,693 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:24,694 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 21:46:24,695 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 21:46:24,698 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 21:46:24,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:46:25,079 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 21:46:25,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649973437] [2020-07-20 21:46:25,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:46:25,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2020-07-20 21:46:25,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946205309] [2020-07-20 21:46:25,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-20 21:46:25,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:46:25,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-20 21:46:25,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-07-20 21:46:25,086 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 17 states. [2020-07-20 21:46:25,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:46:25,557 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-07-20 21:46:25,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 21:46:25,558 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 16 [2020-07-20 21:46:25,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:46:25,559 INFO L225 Difference]: With dead ends: 32 [2020-07-20 21:46:25,560 INFO L226 Difference]: Without dead ends: 28 [2020-07-20 21:46:25,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2020-07-20 21:46:25,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-20 21:46:25,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-07-20 21:46:25,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-20 21:46:25,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-07-20 21:46:25,572 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 16 [2020-07-20 21:46:25,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:46:25,572 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-07-20 21:46:25,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-20 21:46:25,573 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-07-20 21:46:25,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 21:46:25,574 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:46:25,574 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:46:25,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:46:25,790 INFO L427 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:46:25,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:46:25,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1116654880, now seen corresponding path program 2 times [2020-07-20 21:46:25,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:46:25,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133261815] [2020-07-20 21:46:25,792 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 21:46:25,867 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:46:25,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:46:25,870 WARN L261 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 79 conjunts are in the unsatisfiable core [2020-07-20 21:46:25,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:46:25,879 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 21:46:25,880 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:25,882 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:25,882 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:25,883 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 21:46:25,919 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 21:46:25,920 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:25,922 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:25,923 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:25,923 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:25,995 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 21:46:25,996 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:26,000 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:26,000 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:26,001 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:26,076 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 21:46:26,077 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:26,080 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:26,080 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:26,080 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:26,149 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 21:46:26,150 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:26,154 INFO L624 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-07-20 21:46:26,154 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 21:46:26,154 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 21:46:26,157 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 21:46:26,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:46:26,730 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 21:46:26,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133261815] [2020-07-20 21:46:26,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:46:26,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 33 [2020-07-20 21:46:26,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791363744] [2020-07-20 21:46:26,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-20 21:46:26,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:46:26,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-20 21:46:26,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=930, Unknown=0, NotChecked=0, Total=1056 [2020-07-20 21:46:26,734 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 33 states. [2020-07-20 21:46:27,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:46:27,786 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-07-20 21:46:27,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-20 21:46:27,788 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 26 [2020-07-20 21:46:27,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:46:27,791 INFO L225 Difference]: With dead ends: 52 [2020-07-20 21:46:27,791 INFO L226 Difference]: Without dead ends: 48 [2020-07-20 21:46:27,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=340, Invalid=2312, Unknown=0, NotChecked=0, Total=2652 [2020-07-20 21:46:27,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-20 21:46:27,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-07-20 21:46:27,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 21:46:27,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-07-20 21:46:27,832 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 26 [2020-07-20 21:46:27,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:46:27,832 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-07-20 21:46:27,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-20 21:46:27,833 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-07-20 21:46:27,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 21:46:27,835 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:46:27,835 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:46:28,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:46:28,042 INFO L427 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:46:28,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:46:28,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1667333664, now seen corresponding path program 3 times [2020-07-20 21:46:28,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:46:28,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887605795] [2020-07-20 21:46:28,045 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 21:46:28,247 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:46:28,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:46:28,254 WARN L261 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 163 conjunts are in the unsatisfiable core [2020-07-20 21:46:28,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:46:28,276 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 21:46:28,277 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:28,281 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:28,281 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:28,282 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 21:46:28,342 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 21:46:28,344 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:28,348 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:28,349 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:28,349 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:28,410 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 21:46:28,411 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:28,416 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:28,417 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:28,418 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:28,522 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 21:46:28,524 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:28,535 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:28,537 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:28,539 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:28,669 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 21:46:28,671 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:28,675 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:28,675 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:28,676 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:28,822 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 21:46:28,824 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:28,827 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:28,828 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:28,828 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:28,970 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 21:46:28,972 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:28,975 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:28,976 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:28,976 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:29,156 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 21:46:29,157 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:29,160 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:29,160 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:29,161 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:29,343 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 21:46:29,346 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:29,348 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:29,349 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 21:46:29,350 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 21:46:29,361 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 21:46:29,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:46:31,474 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 21:46:31,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887605795] [2020-07-20 21:46:31,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:46:31,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34] total 65 [2020-07-20 21:46:31,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283882264] [2020-07-20 21:46:31,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-07-20 21:46:31,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:46:31,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-07-20 21:46:31,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=3754, Unknown=0, NotChecked=0, Total=4160 [2020-07-20 21:46:31,481 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 65 states. [2020-07-20 21:46:33,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:46:33,936 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2020-07-20 21:46:33,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-07-20 21:46:33,938 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 46 [2020-07-20 21:46:33,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:46:33,941 INFO L225 Difference]: With dead ends: 72 [2020-07-20 21:46:33,941 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 21:46:33,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1654 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=920, Invalid=8200, Unknown=0, NotChecked=0, Total=9120 [2020-07-20 21:46:33,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 21:46:33,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-07-20 21:46:33,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-20 21:46:33,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2020-07-20 21:46:33,961 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 46 [2020-07-20 21:46:33,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:46:33,962 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2020-07-20 21:46:33,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-07-20 21:46:33,962 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2020-07-20 21:46:33,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-07-20 21:46:33,965 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:46:33,965 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:46:34,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:46:34,181 INFO L427 AbstractCegarLoop]: === Iteration 5 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:46:34,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:46:34,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1460556000, now seen corresponding path program 4 times [2020-07-20 21:46:34,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:46:34,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475129934] [2020-07-20 21:46:34,184 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 21:46:34,731 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:46:34,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:46:34,750 WARN L261 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 223 conjunts are in the unsatisfiable core [2020-07-20 21:46:34,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:46:34,770 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 21:46:34,771 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:34,775 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:34,775 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:34,776 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 21:46:34,819 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 21:46:34,821 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:34,827 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:34,828 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:34,828 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:34,900 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 21:46:34,901 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:34,904 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:34,904 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:34,905 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:34,981 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 21:46:34,982 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:34,986 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:34,987 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:34,987 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:35,087 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 21:46:35,088 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:35,090 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:35,091 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:35,092 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:35,219 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 21:46:35,221 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:35,225 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:35,225 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:35,226 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:35,393 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 21:46:35,395 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:35,402 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:35,403 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:35,403 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:35,594 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 21:46:35,599 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:35,612 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:35,613 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:35,613 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:35,800 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 21:46:35,801 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:35,804 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:35,804 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:35,805 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:35,994 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 21:46:35,996 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:35,998 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:35,999 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:35,999 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:36,234 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 21:46:36,235 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:36,245 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:36,245 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:46:36,246 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 21:46:36,378 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 21:46:36,379 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:46:36,382 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:46:36,383 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 21:46:36,383 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-07-20 21:46:36,451 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 21:46:36,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:46:39,432 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 21:46:39,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475129934] [2020-07-20 21:46:39,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:46:39,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 87 [2020-07-20 21:46:39,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769937232] [2020-07-20 21:46:39,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-07-20 21:46:39,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:46:39,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-07-20 21:46:39,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=593, Invalid=6889, Unknown=0, NotChecked=0, Total=7482 [2020-07-20 21:46:39,439 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 87 states. [2020-07-20 21:46:41,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:46:41,980 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-07-20 21:46:41,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-07-20 21:46:41,981 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 66 [2020-07-20 21:46:41,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:46:41,982 INFO L225 Difference]: With dead ends: 67 [2020-07-20 21:46:41,983 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 21:46:41,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=926, Invalid=10630, Unknown=0, NotChecked=0, Total=11556 [2020-07-20 21:46:41,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 21:46:41,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 21:46:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 21:46:41,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 21:46:41,997 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2020-07-20 21:46:42,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:46:42,000 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 21:46:42,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-07-20 21:46:42,001 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 21:46:42,001 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 21:46:42,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:46:42,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 21:46:42,934 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 84 [2020-07-20 21:46:43,242 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 86 [2020-07-20 21:46:43,462 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2020-07-20 21:46:43,675 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-07-20 21:46:43,679 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 21:46:43,680 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 21:46:43,680 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 21:46:43,680 INFO L268 CegarLoopResult]: For program point fooEXIT(lines 9 18) no Hoare annotation was computed. [2020-07-20 21:46:43,681 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 21:46:43,681 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-07-20 21:46:43,681 INFO L268 CegarLoopResult]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-07-20 21:46:43,681 INFO L268 CegarLoopResult]: For program point L12(lines 12 17) no Hoare annotation was computed. [2020-07-20 21:46:43,682 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 21:46:43,682 INFO L268 CegarLoopResult]: For program point L10(lines 10 17) no Hoare annotation was computed. [2020-07-20 21:46:43,682 INFO L268 CegarLoopResult]: For program point L10-1(lines 9 18) no Hoare annotation was computed. [2020-07-20 21:46:43,682 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 21:46:43,682 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 21:46:43,682 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 21:46:43,683 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 21:46:43,683 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 20 26) the Hoare annotation is: true [2020-07-20 21:46:43,683 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 26) no Hoare annotation was computed. [2020-07-20 21:46:43,683 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 21:46:43,683 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 26) no Hoare annotation was computed. [2020-07-20 21:46:43,683 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-07-20 21:46:43,683 INFO L268 CegarLoopResult]: For program point plusFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-20 21:46:43,683 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 21:46:43,684 INFO L268 CegarLoopResult]: For program point plusEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-20 21:46:43,684 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 21:46:43,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:46:43 BoogieIcfgContainer [2020-07-20 21:46:43,691 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 21:46:43,693 INFO L168 Benchmark]: Toolchain (without parser) took 21550.16 ms. Allocated memory was 146.3 MB in the beginning and 353.9 MB in the end (delta: 207.6 MB). Free memory was 102.7 MB in the beginning and 243.1 MB in the end (delta: -140.4 MB). Peak memory consumption was 217.0 MB. Max. memory is 7.1 GB. [2020-07-20 21:46:43,694 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 146.3 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-20 21:46:43,695 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.40 ms. Allocated memory is still 146.3 MB. Free memory was 102.2 MB in the beginning and 92.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-20 21:46:43,696 INFO L168 Benchmark]: Boogie Preprocessor took 188.20 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 92.8 MB in the beginning and 182.5 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-20 21:46:43,696 INFO L168 Benchmark]: RCFGBuilder took 498.59 ms. Allocated memory is still 203.9 MB. Free memory was 182.5 MB in the beginning and 168.0 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-20 21:46:43,697 INFO L168 Benchmark]: TraceAbstraction took 20466.13 ms. Allocated memory was 203.9 MB in the beginning and 353.9 MB in the end (delta: 149.9 MB). Free memory was 167.4 MB in the beginning and 243.1 MB in the end (delta: -75.8 MB). Peak memory consumption was 224.0 MB. Max. memory is 7.1 GB. [2020-07-20 21:46:43,700 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 146.3 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 372.40 ms. Allocated memory is still 146.3 MB. Free memory was 102.2 MB in the beginning and 92.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 188.20 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 92.8 MB in the beginning and 182.5 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 498.59 ms. Allocated memory is still 203.9 MB. Free memory was 182.5 MB in the beginning and 168.0 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20466.13 ms. Allocated memory was 203.9 MB in the beginning and 353.9 MB in the end (delta: 149.9 MB). Free memory was 167.4 MB in the beginning and 243.1 MB in the end (delta: -75.8 MB). Peak memory consumption was 224.0 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: 18.8s, OverallIterations: 5, TraceHistogramMax: 12, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 95 SDslu, 838 SDs, 0 SdLazy, 2607 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 393 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2966 ImplicationChecksByTransitivity, 12.2s 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, 839 HoareAnnotationTreeSize, 51 FomulaSimplifications, 261 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 9 FomulaSimplificationsInter, 815 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 165 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 310 ConstructedInterpolants, 0 QuantifiedInterpolants, 101370 SizeOfPredicates, 156 NumberOfNonLiveVariables, 819 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...