/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test21-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:30:18,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:30:18,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:30:18,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:30:18,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:30:18,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:30:18,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:30:18,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:30:18,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:30:18,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:30:18,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:30:18,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:30:18,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:30:18,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:30:18,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:30:18,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:30:18,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:30:18,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:30:18,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:30:18,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:30:18,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:30:18,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:30:18,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:30:18,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:30:18,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:30:18,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:30:18,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:30:18,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:30:18,485 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 11:30:18,520 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:30:18,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:30:18,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:30:18,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:30:18,522 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:30:18,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:30:18,523 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:30:18,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:30:18,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:30:18,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:30:18,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:30:18,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:30:18,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:30:18,526 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:30:18,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:30:18,526 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:30:18,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:30:18,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:30:18,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:30:18,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:30:18,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:30:18,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:30:18,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:30:18,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:30:18,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:30:18,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:30:18,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:30:18,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:30:18,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:30:18,531 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 -> NOT_INCREMENTALLY [2020-07-20 11:30:18,816 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:30:18,829 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:30:18,834 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:30:18,835 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:30:18,836 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:30:18,837 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test21-1.c [2020-07-20 11:30:18,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37ed16925/7de47bf2fff64b67b14195890e668eed/FLAGfc839bafd [2020-07-20 11:30:19,422 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:30:19,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test21-1.c [2020-07-20 11:30:19,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37ed16925/7de47bf2fff64b67b14195890e668eed/FLAGfc839bafd [2020-07-20 11:30:19,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37ed16925/7de47bf2fff64b67b14195890e668eed [2020-07-20 11:30:19,795 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:30:19,799 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:30:19,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:30:19,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:30:19,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:30:19,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:30:19" (1/1) ... [2020-07-20 11:30:19,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a01cd0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:19, skipping insertion in model container [2020-07-20 11:30:19,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:30:19" (1/1) ... [2020-07-20 11:30:19,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:30:19,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:30:20,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:30:20,040 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:30:20,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:30:20,075 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:30:20,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20 WrapperNode [2020-07-20 11:30:20,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:30:20,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:30:20,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:30:20,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:30:20,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ... [2020-07-20 11:30:20,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ... [2020-07-20 11:30:20,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ... [2020-07-20 11:30:20,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ... [2020-07-20 11:30:20,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ... [2020-07-20 11:30:20,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ... [2020-07-20 11:30:20,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (1/1) ... [2020-07-20 11:30:20,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:30:20,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:30:20,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:30:20,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:30:20,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (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 11:30:20,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:30:20,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:30:20,274 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-07-20 11:30:20,274 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-07-20 11:30:20,274 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-20 11:30:20,274 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:30:20,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:30:20,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:30:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 11:30:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-20 11:30:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 11:30:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-07-20 11:30:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 11:30:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 11:30:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:30:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:30:20,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 11:30:20,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 11:30:20,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:30:20,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:30:20,550 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:30:20,550 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 11:30:20,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:30:20 BoogieIcfgContainer [2020-07-20 11:30:20,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:30:20,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:30:20,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:30:20,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:30:20,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:30:19" (1/3) ... [2020-07-20 11:30:20,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fee66c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:30:20, skipping insertion in model container [2020-07-20 11:30:20,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:30:20" (2/3) ... [2020-07-20 11:30:20,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fee66c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:30:20, skipping insertion in model container [2020-07-20 11:30:20,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:30:20" (3/3) ... [2020-07-20 11:30:20,565 INFO L109 eAbstractionObserver]: Analyzing ICFG test21-1.c [2020-07-20 11:30:20,581 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:30:20,591 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:30:20,607 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:30:20,634 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:30:20,635 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:30:20,635 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:30:20,635 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:30:20,635 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:30:20,636 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:30:20,636 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:30:20,636 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:30:20,659 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-07-20 11:30:20,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 11:30:20,667 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:30:20,668 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 11:30:20,669 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:30:20,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:30:20,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1351082661, now seen corresponding path program 1 times [2020-07-20 11:30:20,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:30:20,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595666704] [2020-07-20 11:30:20,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:30:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:30:20,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 53 conjunts are in the unsatisfiable core [2020-07-20 11:30:20,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:30:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 11:30:21,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:30:21,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595666704] [2020-07-20 11:30:21,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:30:21,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-20 11:30:21,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285272760] [2020-07-20 11:30:21,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 11:30:21,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:30:21,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 11:30:21,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-20 11:30:21,104 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 11 states. [2020-07-20 11:30:21,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:30:21,513 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-07-20 11:30:21,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 11:30:21,515 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-07-20 11:30:21,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:30:21,530 INFO L225 Difference]: With dead ends: 55 [2020-07-20 11:30:21,530 INFO L226 Difference]: Without dead ends: 29 [2020-07-20 11:30:21,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-07-20 11:30:21,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-20 11:30:21,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-20 11:30:21,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-20 11:30:21,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-07-20 11:30:21,586 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 29 [2020-07-20 11:30:21,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:30:21,586 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-07-20 11:30:21,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 11:30:21,587 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-07-20 11:30:21,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 11:30:21,589 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:30:21,589 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 11:30:21,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:30:21,804 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:30:21,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:30:21,805 INFO L82 PathProgramCache]: Analyzing trace with hash 337861081, now seen corresponding path program 1 times [2020-07-20 11:30:21,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:30:21,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634005131] [2020-07-20 11:30:21,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:30:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:30:21,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-20 11:30:21,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:30:21,940 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 32 treesize of output 30 [2020-07-20 11:30:21,945 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 11:30:21,958 INFO L624 ElimStorePlain]: treesize reduction 13, result has 23.5 percent of original size [2020-07-20 11:30:21,958 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 11:30:21,959 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2020-07-20 11:30:22,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:30:22,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:30:22,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 11:30:22,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634005131] [2020-07-20 11:30:22,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:30:22,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-07-20 11:30:22,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587452338] [2020-07-20 11:30:22,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 11:30:22,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:30:22,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 11:30:22,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-07-20 11:30:22,143 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 13 states. [2020-07-20 11:30:22,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:30:22,354 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-07-20 11:30:22,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 11:30:22,354 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29 [2020-07-20 11:30:22,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:30:22,356 INFO L225 Difference]: With dead ends: 39 [2020-07-20 11:30:22,356 INFO L226 Difference]: Without dead ends: 26 [2020-07-20 11:30:22,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2020-07-20 11:30:22,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-20 11:30:22,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-20 11:30:22,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-20 11:30:22,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-07-20 11:30:22,365 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 29 [2020-07-20 11:30:22,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:30:22,365 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-07-20 11:30:22,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 11:30:22,366 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-07-20 11:30:22,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 11:30:22,367 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:30:22,367 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 11:30:22,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:30:22,581 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:30:22,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:30:22,582 INFO L82 PathProgramCache]: Analyzing trace with hash 924667095, now seen corresponding path program 1 times [2020-07-20 11:30:22,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:30:22,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353630927] [2020-07-20 11:30:22,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:30:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:30:22,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 53 conjunts are in the unsatisfiable core [2020-07-20 11:30:22,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:30:22,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 11:30:22,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:30:22,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353630927] [2020-07-20 11:30:22,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:30:22,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-20 11:30:22,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513404842] [2020-07-20 11:30:22,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 11:30:22,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:30:22,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 11:30:22,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-20 11:30:22,793 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 11 states. [2020-07-20 11:30:23,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:30:23,019 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-07-20 11:30:23,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 11:30:23,020 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-07-20 11:30:23,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:30:23,020 INFO L225 Difference]: With dead ends: 26 [2020-07-20 11:30:23,021 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:30:23,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-07-20 11:30:23,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:30:23,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:30:23,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:30:23,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:30:23,023 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-07-20 11:30:23,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:30:23,023 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:30:23,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 11:30:23,023 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:30:23,023 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:30:23,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:30:23,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:30:23,513 INFO L268 CegarLoopResult]: For program point initEXIT(lines 11 18) no Hoare annotation was computed. [2020-07-20 11:30:23,513 INFO L271 CegarLoopResult]: At program point initENTRY(lines 11 18) the Hoare annotation is: true [2020-07-20 11:30:23,513 INFO L268 CegarLoopResult]: For program point initFINAL(lines 11 18) no Hoare annotation was computed. [2020-07-20 11:30:23,513 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:30:23,514 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:30:23,514 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:30:23,514 INFO L268 CegarLoopResult]: For program point get_dummyFINAL(lines 20 23) no Hoare annotation was computed. [2020-07-20 11:30:23,514 INFO L271 CegarLoopResult]: At program point get_dummyENTRY(lines 20 23) the Hoare annotation is: true [2020-07-20 11:30:23,514 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-07-20 11:30:23,514 INFO L268 CegarLoopResult]: For program point get_dummyEXIT(lines 20 23) no Hoare annotation was computed. [2020-07-20 11:30:23,514 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:30:23,515 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= 0 |~#d1~0.offset|) (not (= |~#d1~0.base| |~#d2~0.base|)) (= 0 |~#d2~0.offset|)) [2020-07-20 11:30:23,515 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:30:23,515 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:30:23,515 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-07-20 11:30:23,515 INFO L268 CegarLoopResult]: For program point L35-2(lines 35 37) no Hoare annotation was computed. [2020-07-20 11:30:23,516 INFO L271 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-07-20 11:30:23,516 INFO L264 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: (or (and (= |~#d2~0.base| main_~pd1~0.base) (= main_~pd1~0.offset |~#d2~0.offset|)) (not (= 0 |~#d1~0.offset|)) (not (= 0 |~#d2~0.offset|)) (and (= |~#d1~0.base| main_~pd1~0.base) (= main_~pd1~0.offset |~#d1~0.offset|)) (= |~#d1~0.base| |~#d2~0.base|)) [2020-07-20 11:30:23,516 INFO L268 CegarLoopResult]: For program point L34-2(lines 34 38) no Hoare annotation was computed. [2020-07-20 11:30:23,516 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2020-07-20 11:30:23,516 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-07-20 11:30:23,517 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 30 44) the Hoare annotation is: true [2020-07-20 11:30:23,517 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 30 44) no Hoare annotation was computed. [2020-07-20 11:30:23,517 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 30 44) no Hoare annotation was computed. [2020-07-20 11:30:23,517 INFO L264 CegarLoopResult]: At program point L36(lines 31 44) the Hoare annotation is: (or (not (= 0 |~#d1~0.offset|)) (= |~#d1~0.base| |~#d2~0.base|) (not (= 0 |~#d2~0.offset|))) [2020-07-20 11:30:23,518 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (= main_~pd2~0.base main_~pd1~0.base))) (or (and (= main_~pd2~0.offset main_~pd1~0.offset) (= |~#d2~0.base| main_~pd1~0.base) (= main_~pd1~0.offset 0) .cse0) (not (= 0 |~#d1~0.offset|)) (not (= 0 |~#d2~0.offset|)) (and (= main_~pd2~0.offset 0) .cse0 (= |~#d1~0.base| main_~pd1~0.base) (= main_~pd1~0.offset |~#d1~0.offset|)) (= |~#d1~0.base| |~#d2~0.base|))) [2020-07-20 11:30:23,518 INFO L268 CegarLoopResult]: For program point L34(lines 34 38) no Hoare annotation was computed. [2020-07-20 11:30:23,518 INFO L268 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed. [2020-07-20 11:30:23,518 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 25 28) the Hoare annotation is: true [2020-07-20 11:30:23,518 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 25 28) no Hoare annotation was computed. [2020-07-20 11:30:23,518 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 25 28) no Hoare annotation was computed. [2020-07-20 11:30:23,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:30:23 BoogieIcfgContainer [2020-07-20 11:30:23,538 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:30:23,540 INFO L168 Benchmark]: Toolchain (without parser) took 3742.50 ms. Allocated memory was 137.9 MB in the beginning and 247.5 MB in the end (delta: 109.6 MB). Free memory was 103.2 MB in the beginning and 172.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 40.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:23,541 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 11:30:23,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.42 ms. Allocated memory is still 137.9 MB. Free memory was 102.7 MB in the beginning and 92.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:23,543 INFO L168 Benchmark]: Boogie Preprocessor took 123.84 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 92.5 MB in the beginning and 180.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:23,544 INFO L168 Benchmark]: RCFGBuilder took 349.78 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 163.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:23,545 INFO L168 Benchmark]: TraceAbstraction took 2980.29 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 163.1 MB in the beginning and 172.1 MB in the end (delta: -9.0 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:30:23,549 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 273.42 ms. Allocated memory is still 137.9 MB. Free memory was 102.7 MB in the beginning and 92.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.84 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 92.5 MB in the beginning and 180.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 349.78 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 163.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2980.29 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 163.1 MB in the beginning and 172.1 MB in the end (delta: -9.0 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 42]: 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 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (!(0 == d1) || d1 == d2) || !(0 == d2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 59 SDtfs, 61 SDslu, 333 SDs, 0 SdLazy, 413 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 11 LocationsWithAnnotation, 15 PreInvPairs, 18 NumberOfFragments, 94 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 162 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 15512 SizeOfPredicates, 24 NumberOfNonLiveVariables, 459 ConjunctsInSsa, 125 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 9/16 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...