/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/recursive/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 10:40:39,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 10:40:39,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 10:40:39,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 10:40:39,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 10:40:39,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 10:40:39,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 10:40:39,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 10:40:39,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 10:40:39,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 10:40:39,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 10:40:39,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 10:40:39,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 10:40:39,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 10:40:39,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 10:40:39,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 10:40:39,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 10:40:39,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 10:40:39,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 10:40:39,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 10:40:39,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 10:40:39,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 10:40:39,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 10:40:39,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 10:40:39,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 10:40:39,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 10:40:39,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 10:40:39,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 10:40:39,896 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 10:40:39,929 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 10:40:39,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 10:40:39,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 10:40:39,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 10:40:39,932 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 10:40:39,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 10:40:39,932 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 10:40:39,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 10:40:39,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 10:40:39,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 10:40:39,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 10:40:39,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 10:40:39,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 10:40:39,937 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 10:40:39,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 10:40:39,941 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 10:40:39,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 10:40:39,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 10:40:39,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 10:40:39,941 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 10:40:39,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 10:40:39,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 10:40:39,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 10:40:39,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 10:40:39,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 10:40:39,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 10:40:39,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:39,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 10:40:39,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 10:40:39,946 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 [2020-07-21 10:40:40,268 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 10:40:40,283 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 10:40:40,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 10:40:40,287 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 10:40:40,288 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 10:40:40,288 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-07-21 10:40:40,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89684e9e4/f169d8d3266c4b5f890cdb7c6ac64aaa/FLAG314fc3df2 [2020-07-21 10:40:40,908 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 10:40:40,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-07-21 10:40:40,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89684e9e4/f169d8d3266c4b5f890cdb7c6ac64aaa/FLAG314fc3df2 [2020-07-21 10:40:41,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89684e9e4/f169d8d3266c4b5f890cdb7c6ac64aaa [2020-07-21 10:40:41,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 10:40:41,270 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 10:40:41,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 10:40:41,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 10:40:41,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 10:40:41,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:40:41" (1/1) ... [2020-07-21 10:40:41,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e7ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41, skipping insertion in model container [2020-07-21 10:40:41,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:40:41" (1/1) ... [2020-07-21 10:40:41,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 10:40:41,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 10:40:41,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:40:41,526 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 10:40:41,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:40:41,557 INFO L208 MainTranslator]: Completed translation [2020-07-21 10:40:41,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41 WrapperNode [2020-07-21 10:40:41,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 10:40:41,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 10:40:41,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 10:40:41,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 10:40:41,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (1/1) ... [2020-07-21 10:40:41,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (1/1) ... [2020-07-21 10:40:41,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (1/1) ... [2020-07-21 10:40:41,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (1/1) ... [2020-07-21 10:40:41,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (1/1) ... [2020-07-21 10:40:41,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (1/1) ... [2020-07-21 10:40:41,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (1/1) ... [2020-07-21 10:40:41,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 10:40:41,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 10:40:41,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 10:40:41,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 10:40:41,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (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 10:40:41,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 10:40:41,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 10:40:41,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-07-21 10:40:41,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-07-21 10:40:41,741 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 10:40:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 10:40:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 10:40:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-07-21 10:40:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-07-21 10:40:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 10:40:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 10:40:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 10:40:41,982 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 10:40:41,982 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 10:40:41,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:40:41 BoogieIcfgContainer [2020-07-21 10:40:41,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 10:40:41,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 10:40:41,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 10:40:42,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 10:40:42,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:40:41" (1/3) ... [2020-07-21 10:40:42,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d481c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:40:42, skipping insertion in model container [2020-07-21 10:40:42,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:40:41" (2/3) ... [2020-07-21 10:40:42,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d481c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:40:42, skipping insertion in model container [2020-07-21 10:40:42,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:40:41" (3/3) ... [2020-07-21 10:40:42,014 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2020-07-21 10:40:42,049 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 10:40:42,063 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 10:40:42,078 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 10:40:42,104 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 10:40:42,104 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 10:40:42,104 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 10:40:42,104 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 10:40:42,104 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 10:40:42,104 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 10:40:42,104 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 10:40:42,105 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 10:40:42,122 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-07-21 10:40:42,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 10:40:42,129 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:40:42,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:40:42,130 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:40:42,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:40:42,137 INFO L82 PathProgramCache]: Analyzing trace with hash -2122072279, now seen corresponding path program 1 times [2020-07-21 10:40:42,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:40:42,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950176390] [2020-07-21 10:40:42,145 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 [2020-07-21 10:40:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:40:42,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 10:40:42,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:40:42,361 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 10:40:42,364 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 10:40:42,473 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 10:40:42,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:40:42,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950176390] [2020-07-21 10:40:42,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:40:42,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 10:40:42,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794267500] [2020-07-21 10:40:42,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 10:40:42,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:40:42,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 10:40:42,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-21 10:40:42,504 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 7 states. [2020-07-21 10:40:42,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:40:42,672 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2020-07-21 10:40:42,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 10:40:42,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-07-21 10:40:42,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:40:42,687 INFO L225 Difference]: With dead ends: 43 [2020-07-21 10:40:42,687 INFO L226 Difference]: Without dead ends: 27 [2020-07-21 10:40:42,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-21 10:40:42,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-21 10:40:42,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-21 10:40:42,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 10:40:42,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-07-21 10:40:42,737 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 14 [2020-07-21 10:40:42,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:40:42,738 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-07-21 10:40:42,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 10:40:42,738 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-07-21 10:40:42,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 10:40:42,740 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:40:42,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:40:42,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:42,948 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:40:42,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:40:42,949 INFO L82 PathProgramCache]: Analyzing trace with hash -612070348, now seen corresponding path program 1 times [2020-07-21 10:40:42,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:40:42,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278829640] [2020-07-21 10:40:42,951 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) [2020-07-21 10:40:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:42,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 10:40:42,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:40:43,063 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 10:40:43,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:40:43,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278829640] [2020-07-21 10:40:43,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:40:43,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 10:40:43,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955922123] [2020-07-21 10:40:43,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 10:40:43,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:40:43,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 10:40:43,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-21 10:40:43,069 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 7 states. [2020-07-21 10:40:43,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:40:43,216 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-07-21 10:40:43,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 10:40:43,218 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-07-21 10:40:43,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:40:43,219 INFO L225 Difference]: With dead ends: 33 [2020-07-21 10:40:43,220 INFO L226 Difference]: Without dead ends: 29 [2020-07-21 10:40:43,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-21 10:40:43,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-21 10:40:43,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-07-21 10:40:43,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 10:40:43,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-07-21 10:40:43,239 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 15 [2020-07-21 10:40:43,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:40:43,241 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-07-21 10:40:43,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 10:40:43,242 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-07-21 10:40:43,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 10:40:43,245 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:40:43,245 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] [2020-07-21 10:40:43,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:43,462 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:40:43,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:40:43,463 INFO L82 PathProgramCache]: Analyzing trace with hash -592576498, now seen corresponding path program 1 times [2020-07-21 10:40:43,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:40:43,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031567800] [2020-07-21 10:40:43,464 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 [2020-07-21 10:40:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:40:43,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 10:40:43,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:40:43,608 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 10:40:43,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:40:43,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031567800] [2020-07-21 10:40:43,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:40:43,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-21 10:40:43,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128925179] [2020-07-21 10:40:43,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 10:40:43,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:40:43,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 10:40:43,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-21 10:40:43,616 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 9 states. [2020-07-21 10:40:43,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:40:43,774 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-07-21 10:40:43,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 10:40:43,775 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-07-21 10:40:43,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:40:43,776 INFO L225 Difference]: With dead ends: 39 [2020-07-21 10:40:43,776 INFO L226 Difference]: Without dead ends: 29 [2020-07-21 10:40:43,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-21 10:40:43,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-21 10:40:43,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-07-21 10:40:43,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 10:40:43,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-07-21 10:40:43,784 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2020-07-21 10:40:43,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:40:43,785 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-07-21 10:40:43,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 10:40:43,785 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-07-21 10:40:43,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 10:40:43,786 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:40:43,786 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] [2020-07-21 10:40:43,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:43,987 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:40:43,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:40:43,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1306118367, now seen corresponding path program 1 times [2020-07-21 10:40:43,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:40:43,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876464276] [2020-07-21 10:40:43,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) [2020-07-21 10:40:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:40:44,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-21 10:40:44,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:44,122 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 10:40:44,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:40:44,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876464276] [2020-07-21 10:40:44,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:40:44,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-21 10:40:44,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128235551] [2020-07-21 10:40:44,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 10:40:44,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:40:44,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 10:40:44,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-07-21 10:40:44,125 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 10 states. [2020-07-21 10:40:44,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:40:44,285 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-07-21 10:40:44,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 10:40:44,285 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-07-21 10:40:44,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:40:44,287 INFO L225 Difference]: With dead ends: 36 [2020-07-21 10:40:44,287 INFO L226 Difference]: Without dead ends: 32 [2020-07-21 10:40:44,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-07-21 10:40:44,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-21 10:40:44,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-07-21 10:40:44,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-21 10:40:44,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-21 10:40:44,295 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2020-07-21 10:40:44,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:40:44,296 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-21 10:40:44,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 10:40:44,296 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-21 10:40:44,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 10:40:44,297 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:40:44,297 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] [2020-07-21 10:40:44,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:44,511 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:40:44,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:40:44,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1571291849, now seen corresponding path program 1 times [2020-07-21 10:40:44,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:40:44,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770125565] [2020-07-21 10:40:44,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) [2020-07-21 10:40:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:44,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 10:40:44,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:40:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 10:40:44,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:40:44,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770125565] [2020-07-21 10:40:44,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:40:44,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 10:40:44,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202900786] [2020-07-21 10:40:44,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 10:40:44,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:40:44,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 10:40:44,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 10:40:44,579 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-07-21 10:40:44,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:40:44,622 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-07-21 10:40:44,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 10:40:44,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-07-21 10:40:44,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:40:44,624 INFO L225 Difference]: With dead ends: 42 [2020-07-21 10:40:44,624 INFO L226 Difference]: Without dead ends: 30 [2020-07-21 10:40:44,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 10:40:44,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-21 10:40:44,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-21 10:40:44,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-21 10:40:44,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-07-21 10:40:44,631 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 28 [2020-07-21 10:40:44,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:40:44,631 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-07-21 10:40:44,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 10:40:44,631 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-07-21 10:40:44,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-21 10:40:44,633 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:40:44,633 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] [2020-07-21 10:40:44,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:44,841 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:40:44,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:40:44,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1610221656, now seen corresponding path program 1 times [2020-07-21 10:40:44,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:40:44,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111705363] [2020-07-21 10:40:44,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:40:44,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 32 conjunts are in the unsatisfiable core [2020-07-21 10:40:44,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:40:45,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 10:40:45,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:40:45,043 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 2, 1] term [2020-07-21 10:40:45,044 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:40:45,461 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:40:45,462 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:40:45,463 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:40:45,465 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 10:40:45,467 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 10:40:45,591 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:40:45,592 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:40:45,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 10:40:45,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111705363] [2020-07-21 10:40:45,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 10:40:45,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2020-07-21 10:40:45,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863629972] [2020-07-21 10:40:45,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-21 10:40:45,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:40:45,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-21 10:40:45,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-07-21 10:40:45,647 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 19 states. [2020-07-21 10:40:45,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:40:45,999 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-07-21 10:40:46,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 10:40:46,001 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 29 [2020-07-21 10:40:46,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:40:46,002 INFO L225 Difference]: With dead ends: 42 [2020-07-21 10:40:46,002 INFO L226 Difference]: Without dead ends: 38 [2020-07-21 10:40:46,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2020-07-21 10:40:46,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-21 10:40:46,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2020-07-21 10:40:46,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-21 10:40:46,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-07-21 10:40:46,022 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2020-07-21 10:40:46,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:40:46,022 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-07-21 10:40:46,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-21 10:40:46,023 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-07-21 10:40:46,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-21 10:40:46,025 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:40:46,025 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-21 10:40:46,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:46,241 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:40:46,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:40:46,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1417612799, now seen corresponding path program 1 times [2020-07-21 10:40:46,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:40:46,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764175455] [2020-07-21 10:40:46,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:40:46,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 32 conjunts are in the unsatisfiable core [2020-07-21 10:40:46,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:40:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-21 10:40:46,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 10:40:47,036 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:40:47,213 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:40:47,350 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 10:40:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 10:40:47,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764175455] [2020-07-21 10:40:47,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 10:40:47,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 28 [2020-07-21 10:40:47,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152803543] [2020-07-21 10:40:47,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-21 10:40:47,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:40:47,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-21 10:40:47,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2020-07-21 10:40:47,434 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 28 states. [2020-07-21 10:40:47,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:40:47,437 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-07-21 10:40:47,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 10:40:47,437 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 36 [2020-07-21 10:40:47,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:40:47,437 INFO L225 Difference]: With dead ends: 33 [2020-07-21 10:40:47,438 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 10:40:47,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2020-07-21 10:40:47,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 10:40:47,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 10:40:47,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 10:40:47,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 10:40:47,440 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-07-21 10:40:47,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:40:47,440 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 10:40:47,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-21 10:40:47,441 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 10:40:47,441 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 10:40:47,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:47,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 10:40:47,718 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 10:40:47,718 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 10:40:47,718 INFO L271 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-07-21 10:40:47,719 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-07-21 10:40:47,719 INFO L268 CegarLoopResult]: For program point L29(lines 29 33) no Hoare annotation was computed. [2020-07-21 10:40:47,719 INFO L268 CegarLoopResult]: For program point isEvenEXIT(lines 26 34) no Hoare annotation was computed. [2020-07-21 10:40:47,719 INFO L268 CegarLoopResult]: For program point L27(lines 27 33) no Hoare annotation was computed. [2020-07-21 10:40:47,719 INFO L268 CegarLoopResult]: For program point isEvenFINAL(lines 26 34) no Hoare annotation was computed. [2020-07-21 10:40:47,719 INFO L271 CegarLoopResult]: At program point isEvenENTRY(lines 26 34) the Hoare annotation is: true [2020-07-21 10:40:47,719 INFO L268 CegarLoopResult]: For program point L17(lines 17 23) no Hoare annotation was computed. [2020-07-21 10:40:47,719 INFO L268 CegarLoopResult]: For program point isOddFINAL(lines 16 24) no Hoare annotation was computed. [2020-07-21 10:40:47,720 INFO L271 CegarLoopResult]: At program point isOddENTRY(lines 16 24) the Hoare annotation is: true [2020-07-21 10:40:47,720 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-07-21 10:40:47,720 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-07-21 10:40:47,720 INFO L268 CegarLoopResult]: For program point isOddEXIT(lines 16 24) no Hoare annotation was computed. [2020-07-21 10:40:47,720 INFO L268 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-07-21 10:40:47,720 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 10:40:47,720 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: false [2020-07-21 10:40:47,721 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 10:40:47,721 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 10:40:47,721 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 47) no Hoare annotation was computed. [2020-07-21 10:40:47,722 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 37 49) the Hoare annotation is: true [2020-07-21 10:40:47,722 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 37 49) no Hoare annotation was computed. [2020-07-21 10:40:47,722 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-07-21 10:40:47,723 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 37 49) no Hoare annotation was computed. [2020-07-21 10:40:47,723 INFO L268 CegarLoopResult]: For program point L44(lines 44 48) no Hoare annotation was computed. [2020-07-21 10:40:47,724 INFO L271 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: true [2020-07-21 10:40:47,724 INFO L268 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2020-07-21 10:40:47,724 INFO L268 CegarLoopResult]: For program point L39(lines 39 41) no Hoare annotation was computed. [2020-07-21 10:40:47,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:40:47 BoogieIcfgContainer [2020-07-21 10:40:47,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 10:40:47,744 INFO L168 Benchmark]: Toolchain (without parser) took 6468.57 ms. Allocated memory was 138.9 MB in the beginning and 277.3 MB in the end (delta: 138.4 MB). Free memory was 103.6 MB in the beginning and 222.8 MB in the end (delta: -119.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-07-21 10:40:47,746 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 10:40:47,747 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.16 ms. Allocated memory is still 138.9 MB. Free memory was 103.4 MB in the beginning and 93.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-21 10:40:47,748 INFO L168 Benchmark]: Boogie Preprocessor took 110.70 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 93.7 MB in the beginning and 181.6 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-21 10:40:47,753 INFO L168 Benchmark]: RCFGBuilder took 318.97 ms. Allocated memory is still 202.4 MB. Free memory was 181.6 MB in the beginning and 168.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-07-21 10:40:47,754 INFO L168 Benchmark]: TraceAbstraction took 5745.37 ms. Allocated memory was 202.4 MB in the beginning and 277.3 MB in the end (delta: 75.0 MB). Free memory was 167.3 MB in the beginning and 222.8 MB in the end (delta: -55.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-07-21 10:40:47,763 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.16 ms. Allocated memory is still 138.9 MB. Free memory was 103.4 MB in the beginning and 93.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.70 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 93.7 MB in the beginning and 181.6 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 318.97 ms. Allocated memory is still 202.4 MB. Free memory was 181.6 MB in the beginning and 168.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5745.37 ms. Allocated memory was 202.4 MB in the beginning and 277.3 MB in the end (delta: 75.0 MB). Free memory was 167.3 MB in the beginning and 222.8 MB in the end (delta: -55.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 132 SDtfs, 83 SDslu, 669 SDs, 0 SdLazy, 535 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 240 GetRequests, 147 SyntacticMatches, 5 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=6, 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, 7 MinimizatonAttempts, 11 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 165 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 221 ConstructedInterpolants, 1 QuantifiedInterpolants, 26779 SizeOfPredicates, 32 NumberOfNonLiveVariables, 398 ConjunctsInSsa, 126 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 17/38 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...