/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:14:44,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:14:44,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:14:44,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:14:44,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:14:44,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:14:44,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:14:44,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:14:44,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:14:44,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:14:44,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:14:44,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:14:44,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:14:44,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:14:44,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:14:44,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:14:44,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:14:44,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:14:44,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:14:44,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:14:44,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:14:44,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:14:44,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:14:44,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:14:44,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 16:14:44,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:14:44,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:14:44,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:14:44,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 16:14:44,272 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:14:44,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:14:44,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:14:44,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:14:44,274 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:14:44,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:14:44,274 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:14:44,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:14:44,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:14:44,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:14:44,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:14:44,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:14:44,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:14:44,275 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:14:44,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:14:44,276 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:14:44,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:14:44,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:14:44,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:14:44,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:14:44,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:14:44,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:14:44,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:14:44,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:14:44,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:14:44,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:14:44,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:14:44,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:14:44,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:14:44,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 16:14:44,562 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:14:44,579 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:14:44,582 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:14:44,584 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:14:44,584 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:14:44,585 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-07-21 16:14:44,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47ff8003e/185fe1dca7e24744a3b0b38b8e4eec17/FLAG4395f5792 [2020-07-21 16:14:45,182 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:14:45,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-07-21 16:14:45,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47ff8003e/185fe1dca7e24744a3b0b38b8e4eec17/FLAG4395f5792 [2020-07-21 16:14:45,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47ff8003e/185fe1dca7e24744a3b0b38b8e4eec17 [2020-07-21 16:14:45,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:14:45,592 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:14:45,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:14:45,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:14:45,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:14:45,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:14:45" (1/1) ... [2020-07-21 16:14:45,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ebc37eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:14:45, skipping insertion in model container [2020-07-21 16:14:45,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:14:45" (1/1) ... [2020-07-21 16:14:45,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:14:45,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:14:45,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:14:45,894 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:14:45,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:14:45,962 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:14:45,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:14:45 WrapperNode [2020-07-21 16:14:45,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:14:45,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:14:45,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:14:45,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:14:46,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:14:45" (1/1) ... [2020-07-21 16:14:46,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:14:45" (1/1) ... [2020-07-21 16:14:46,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:14:45" (1/1) ... [2020-07-21 16:14:46,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:14:45" (1/1) ... [2020-07-21 16:14:46,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:14:45" (1/1) ... [2020-07-21 16:14:46,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:14:45" (1/1) ... [2020-07-21 16:14:46,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:14:45" (1/1) ... [2020-07-21 16:14:46,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:14:46,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:14:46,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:14:46,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:14:46,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:14:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:14:46,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:14:46,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:14:46,223 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 16:14:46,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 16:14:46,223 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-21 16:14:46,223 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:14:46,224 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-07-21 16:14:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 16:14:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 16:14:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:14:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 16:14:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 16:14:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 16:14:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:14:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-21 16:14:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 16:14:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:14:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 16:14:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-07-21 16:14:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 16:14:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:14:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:14:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 16:14:46,539 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:14:46,540 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 16:14:46,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:14:46 BoogieIcfgContainer [2020-07-21 16:14:46,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:14:46,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:14:46,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:14:46,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:14:46,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:14:45" (1/3) ... [2020-07-21 16:14:46,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52032de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:14:46, skipping insertion in model container [2020-07-21 16:14:46,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:14:45" (2/3) ... [2020-07-21 16:14:46,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52032de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:14:46, skipping insertion in model container [2020-07-21 16:14:46,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:14:46" (3/3) ... [2020-07-21 16:14:46,566 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2020-07-21 16:14:46,577 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:14:46,585 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:14:46,599 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:14:46,623 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:14:46,623 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:14:46,623 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:14:46,624 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:14:46,624 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:14:46,624 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:14:46,624 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:14:46,624 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:14:46,645 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-07-21 16:14:46,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 16:14:46,652 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:14:46,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:14:46,654 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:14:46,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:14:46,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1882906983, now seen corresponding path program 1 times [2020-07-21 16:14:46,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:14:46,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256183373] [2020-07-21 16:14:46,671 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:14:46,806 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:14:46,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:14:46,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 16:14:46,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:14:46,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:14:46,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:14:46,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256183373] [2020-07-21 16:14:46,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:14:46,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 16:14:46,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314378772] [2020-07-21 16:14:46,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 16:14:46,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:14:46,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 16:14:46,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 16:14:46,868 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2020-07-21 16:14:46,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:14:46,899 INFO L93 Difference]: Finished difference Result 77 states and 94 transitions. [2020-07-21 16:14:46,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 16:14:46,901 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2020-07-21 16:14:46,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:14:46,911 INFO L225 Difference]: With dead ends: 77 [2020-07-21 16:14:46,911 INFO L226 Difference]: Without dead ends: 37 [2020-07-21 16:14:46,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 16:14:46,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-21 16:14:46,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-21 16:14:46,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-21 16:14:46,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-07-21 16:14:46,960 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 24 [2020-07-21 16:14:46,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:14:46,960 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-07-21 16:14:46,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 16:14:46,961 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-07-21 16:14:46,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 16:14:46,963 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:14:46,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:14:47,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:14:47,165 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:14:47,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:14:47,166 INFO L82 PathProgramCache]: Analyzing trace with hash 861838629, now seen corresponding path program 1 times [2020-07-21 16:14:47,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:14:47,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74460815] [2020-07-21 16:14:47,167 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:14:47,241 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:14:47,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:14:47,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 16:14:47,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:14:47,326 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:14:47,329 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:14:47,337 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:14:47,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:14:47,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:14:47,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74460815] [2020-07-21 16:14:47,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:14:47,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 16:14:47,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77125904] [2020-07-21 16:14:47,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 16:14:47,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:14:47,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 16:14:47,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:14:47,380 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-07-21 16:14:47,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:14:47,510 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-07-21 16:14:47,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:14:47,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-07-21 16:14:47,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:14:47,513 INFO L225 Difference]: With dead ends: 43 [2020-07-21 16:14:47,513 INFO L226 Difference]: Without dead ends: 41 [2020-07-21 16:14:47,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-21 16:14:47,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-21 16:14:47,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-21 16:14:47,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-21 16:14:47,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-07-21 16:14:47,526 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 24 [2020-07-21 16:14:47,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:14:47,528 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-07-21 16:14:47,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 16:14:47,528 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-07-21 16:14:47,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-21 16:14:47,530 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:14:47,531 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:14:47,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:14:47,739 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:14:47,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:14:47,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1344635178, now seen corresponding path program 1 times [2020-07-21 16:14:47,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:14:47,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061500503] [2020-07-21 16:14:47,742 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:14:47,833 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:14:47,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:14:47,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-21 16:14:47,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:14:47,887 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 7 treesize of output 6 [2020-07-21 16:14:47,888 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:14:47,892 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:14:47,893 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:14:47,893 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:7, output treesize:6 [2020-07-21 16:14:49,957 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_1 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_1))) is different from true [2020-07-21 16:14:52,007 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_3 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_3))) is different from true [2020-07-21 16:14:54,051 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_4 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_4))) is different from true [2020-07-21 16:14:56,104 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_5 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_5))) is different from true [2020-07-21 16:14:56,149 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 29 treesize of output 23 [2020-07-21 16:14:56,152 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:14:56,158 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:14:56,160 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-07-21 16:14:56,161 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:29, output treesize:21 [2020-07-21 16:14:56,184 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:14:56,237 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 12 not checked. [2020-07-21 16:14:56,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:14:56,265 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:14:58,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061500503] [2020-07-21 16:14:58,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 16:14:58,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-07-21 16:14:58,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236439500] [2020-07-21 16:14:58,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 16:14:58,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:14:58,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 16:14:58,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=112, Unknown=5, NotChecked=92, Total=240 [2020-07-21 16:14:58,348 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 14 states. [2020-07-21 16:15:00,453 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_check_~a.base_BEFORE_CALL_1 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_1))) (exists ((v_check_~a.base_BEFORE_CALL_3 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_3)))) is different from true [2020-07-21 16:15:00,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:00,595 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-07-21 16:15:00,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 16:15:00,596 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-07-21 16:15:00,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:00,597 INFO L225 Difference]: With dead ends: 47 [2020-07-21 16:15:00,597 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 16:15:00,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=52, Invalid=202, Unknown=6, NotChecked=160, Total=420 [2020-07-21 16:15:00,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 16:15:00,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 16:15:00,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 16:15:00,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 16:15:00,600 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-07-21 16:15:00,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:00,600 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 16:15:00,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 16:15:00,600 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 16:15:00,601 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 16:15:00,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:00,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 16:15:01,154 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:15:01,154 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 16:15:01,154 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:15:01,154 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:15:01,155 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 16:15:01,155 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 16:15:01,155 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:15:01,155 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2020-07-21 16:15:01,155 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-07-21 16:15:01,155 INFO L268 CegarLoopResult]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2020-07-21 16:15:01,155 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-07-21 16:15:01,156 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 39 48) the Hoare annotation is: true [2020-07-21 16:15:01,157 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 39 48) no Hoare annotation was computed. [2020-07-21 16:15:01,158 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= .cse0 (select |#memory_int| |main_#t~malloc10.base|)) (= .cse0 (select |#memory_int| main_~a~0.base)))) [2020-07-21 16:15:01,158 INFO L271 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: true [2020-07-21 16:15:01,158 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-07-21 16:15:01,158 INFO L271 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: true [2020-07-21 16:15:01,158 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-07-21 16:15:01,158 INFO L268 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2020-07-21 16:15:01,159 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 39 48) no Hoare annotation was computed. [2020-07-21 16:15:01,159 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-07-21 16:15:01,159 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 14 37) the Hoare annotation is: true [2020-07-21 16:15:01,159 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)) (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (and (= .cse0 (select |#memory_int| check_~a.base)) (<= 0 check_~x) (<= (+ check_~y 1) check_~n)))) [2020-07-21 16:15:01,159 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-07-21 16:15:01,160 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-07-21 16:15:01,160 INFO L268 CegarLoopResult]: For program point L23(lines 23 24) no Hoare annotation was computed. [2020-07-21 16:15:01,160 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 24) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)) (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (and (= .cse0 (select |#memory_int| check_~a.base)) (<= 0 check_~x) (<= (+ check_~y 1) check_~n)))) [2020-07-21 16:15:01,160 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 14 37) no Hoare annotation was computed. [2020-07-21 16:15:01,161 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)) (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (and (= .cse0 (select |#memory_int| check_~a.base)) (<= 0 check_~x) (<= (+ check_~y 1) check_~n)))) [2020-07-21 16:15:01,161 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-07-21 16:15:01,161 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-07-21 16:15:01,161 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 14 37) no Hoare annotation was computed. [2020-07-21 16:15:01,161 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (let ((.cse1 ((as const (Array Int Int)) 0))) (or (and (exists ((check_~x1~0 Int) (check_~i~0 Int) (check_~a.offset Int)) (let ((.cse0 ((as const (Array Int Int)) 0))) (and (<= (select .cse0 (+ (* check_~x1~0 4) check_~a.offset)) check_~ax~0) (<= check_~ai~0 (select .cse0 (+ (* check_~i~0 4) check_~a.offset)))))) (= .cse1 (select |#memory_int| check_~a.base)) (<= 0 check_~x) (<= (+ check_~y 1) check_~n)) (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)) (not (= .cse1 (select |#memory_int| |check_#in~a.base|))))) [2020-07-21 16:15:01,162 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 10) the Hoare annotation is: true [2020-07-21 16:15:01,162 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 10) no Hoare annotation was computed. [2020-07-21 16:15:01,162 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-07-21 16:15:01,162 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-07-21 16:15:01,162 INFO L268 CegarLoopResult]: For program point L9-3(lines 8 10) no Hoare annotation was computed. [2020-07-21 16:15:01,162 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-07-21 16:15:01,162 INFO L271 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: true [2020-07-21 16:15:01,162 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:15:01,162 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:15:01,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:15:01 BoogieIcfgContainer [2020-07-21 16:15:01,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:15:01,170 INFO L168 Benchmark]: Toolchain (without parser) took 15579.77 ms. Allocated memory was 135.8 MB in the beginning and 229.1 MB in the end (delta: 93.3 MB). Free memory was 100.5 MB in the beginning and 106.6 MB in the end (delta: -6.1 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2020-07-21 16:15:01,171 INFO L168 Benchmark]: CDTParser took 0.80 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 16:15:01,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.75 ms. Allocated memory is still 135.8 MB. Free memory was 100.1 MB in the beginning and 89.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-21 16:15:01,173 INFO L168 Benchmark]: Boogie Preprocessor took 174.16 ms. Allocated memory was 135.8 MB in the beginning and 201.3 MB in the end (delta: 65.5 MB). Free memory was 89.6 MB in the beginning and 178.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-07-21 16:15:01,174 INFO L168 Benchmark]: RCFGBuilder took 399.79 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 160.5 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2020-07-21 16:15:01,175 INFO L168 Benchmark]: TraceAbstraction took 14611.78 ms. Allocated memory was 201.3 MB in the beginning and 229.1 MB in the end (delta: 27.8 MB). Free memory was 159.8 MB in the beginning and 106.6 MB in the end (delta: 53.2 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. [2020-07-21 16:15:01,179 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 378.75 ms. Allocated memory is still 135.8 MB. Free memory was 100.1 MB in the beginning and 89.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 174.16 ms. Allocated memory was 135.8 MB in the beginning and 201.3 MB in the end (delta: 65.5 MB). Free memory was 89.6 MB in the beginning and 178.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 399.79 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 160.5 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14611.78 ms. Allocated memory was 201.3 MB in the beginning and 229.1 MB in the end (delta: 27.8 MB). Free memory was 159.8 MB in the beginning and 106.6 MB in the end (delta: 53.2 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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 7 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.1s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 37 SDslu, 290 SDs, 0 SdLazy, 138 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 80 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 12.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 36 PreInvPairs, 44 NumberOfFragments, 177 HoareAnnotationTreeSize, 36 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 123 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 10.6s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 98 ConstructedInterpolants, 17 QuantifiedInterpolants, 15638 SizeOfPredicates, 15 NumberOfNonLiveVariables, 412 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 10/22 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...