/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/afnp2014.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:22:45,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:22:45,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:22:45,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:22:45,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:22:45,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:22:45,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:22:45,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:22:45,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:22:45,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:22:45,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:22:45,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:22:45,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:22:45,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:22:45,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:22:45,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:22:45,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:22:45,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:22:45,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:22:45,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:22:45,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:22:45,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:22:45,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:22:45,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:22:45,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 21:22:45,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:22:45,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:22:45,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:22:45,642 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 [2019-11-06 21:22:45,666 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:22:45,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:22:45,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:22:45,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:22:45,669 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:22:45,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:22:45,669 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:22:45,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:22:45,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:22:45,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:22:45,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:22:45,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:22:45,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:22:45,672 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:22:45,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:22:45,672 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:22:45,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:22:45,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:22:45,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:22:45,673 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:22:45,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:22:45,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:22:45,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:22:45,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:22:45,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:22:45,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:22:45,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:22:45,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:22:45,675 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:22:45,958 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:22:45,971 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:22:45,975 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:22:45,976 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:22:45,977 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:22:45,977 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/afnp2014.i [2019-11-06 21:22:46,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b11369eb/f05510f5464c410e93e73be007769557/FLAG05d720219 [2019-11-06 21:22:46,487 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:22:46,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/afnp2014.i [2019-11-06 21:22:46,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b11369eb/f05510f5464c410e93e73be007769557/FLAG05d720219 [2019-11-06 21:22:46,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b11369eb/f05510f5464c410e93e73be007769557 [2019-11-06 21:22:46,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:22:46,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:22:46,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:22:46,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:22:46,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:22:46,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:22:46" (1/1) ... [2019-11-06 21:22:46,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@137b7619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:46, skipping insertion in model container [2019-11-06 21:22:46,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:22:46" (1/1) ... [2019-11-06 21:22:46,915 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:22:46,932 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:22:47,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:22:47,096 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:22:47,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:22:47,133 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:22:47,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:47 WrapperNode [2019-11-06 21:22:47,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:22:47,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:22:47,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:22:47,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:22:47,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:47" (1/1) ... [2019-11-06 21:22:47,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:47" (1/1) ... [2019-11-06 21:22:47,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:47" (1/1) ... [2019-11-06 21:22:47,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:47" (1/1) ... [2019-11-06 21:22:47,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:47" (1/1) ... [2019-11-06 21:22:47,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:47" (1/1) ... [2019-11-06 21:22:47,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:47" (1/1) ... [2019-11-06 21:22:47,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:22:47,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:22:47,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:22:47,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:22:47,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:47" (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 [2019-11-06 21:22:47,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:22:47,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:22:47,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 21:22:47,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:22:47,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:22:47,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 21:22:47,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 21:22:47,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:22:47,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:22:47,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:22:47,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:22:47,454 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:22:47,454 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 21:22:47,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:22:47 BoogieIcfgContainer [2019-11-06 21:22:47,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:22:47,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:22:47,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:22:47,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:22:47,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:22:46" (1/3) ... [2019-11-06 21:22:47,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5633045d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:22:47, skipping insertion in model container [2019-11-06 21:22:47,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:22:47" (2/3) ... [2019-11-06 21:22:47,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5633045d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:22:47, skipping insertion in model container [2019-11-06 21:22:47,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:22:47" (3/3) ... [2019-11-06 21:22:47,463 INFO L109 eAbstractionObserver]: Analyzing ICFG afnp2014.i [2019-11-06 21:22:47,474 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:22:47,482 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:22:47,494 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:22:47,534 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:22:47,534 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:22:47,538 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:22:47,538 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:22:47,538 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:22:47,538 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:22:47,538 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:22:47,539 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:22:47,568 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-06 21:22:47,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-06 21:22:47,576 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:47,577 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:47,580 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:47,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:47,587 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2019-11-06 21:22:47,600 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:47,600 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273067528] [2019-11-06 21:22:47,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:47,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:47,717 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273067528] [2019-11-06 21:22:47,717 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:22:47,718 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 21:22:47,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676901396] [2019-11-06 21:22:47,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 21:22:47,725 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:47,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 21:22:47,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:22:47,742 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-11-06 21:22:47,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:47,763 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-11-06 21:22:47,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 21:22:47,765 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-06 21:22:47,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:47,773 INFO L225 Difference]: With dead ends: 32 [2019-11-06 21:22:47,774 INFO L226 Difference]: Without dead ends: 13 [2019-11-06 21:22:47,777 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 21:22:47,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-06 21:22:47,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-06 21:22:47,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-06 21:22:47,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-11-06 21:22:47,815 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2019-11-06 21:22:47,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:47,816 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-06 21:22:47,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 21:22:47,816 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-11-06 21:22:47,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-06 21:22:47,817 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:47,817 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:47,818 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:47,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:47,818 INFO L82 PathProgramCache]: Analyzing trace with hash 99303034, now seen corresponding path program 1 times [2019-11-06 21:22:47,818 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:47,819 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357471720] [2019-11-06 21:22:47,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:47,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:47,927 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357471720] [2019-11-06 21:22:47,927 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:22:47,927 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:22:47,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244978762] [2019-11-06 21:22:47,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:22:47,929 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:47,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:22:47,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:22:47,930 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2019-11-06 21:22:47,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:47,987 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-11-06 21:22:47,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:22:47,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-11-06 21:22:47,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:47,989 INFO L225 Difference]: With dead ends: 21 [2019-11-06 21:22:47,989 INFO L226 Difference]: Without dead ends: 16 [2019-11-06 21:22:47,991 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:22:47,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-06 21:22:47,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-06 21:22:47,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-06 21:22:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-06 21:22:47,996 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2019-11-06 21:22:47,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:47,996 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-06 21:22:47,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:22:47,997 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-06 21:22:47,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 21:22:47,998 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:47,998 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:47,998 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:47,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:47,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1368172775, now seen corresponding path program 1 times [2019-11-06 21:22:47,999 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:47,999 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558566418] [2019-11-06 21:22:48,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:48,099 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558566418] [2019-11-06 21:22:48,101 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920162350] [2019-11-06 21:22:48,101 INFO L94 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 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:48,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-06 21:22:48,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:22:48,185 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:22:48,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:48,228 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:22:48,228 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2019-11-06 21:22:48,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007820503] [2019-11-06 21:22:48,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:22:48,232 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:48,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:22:48,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:22:48,233 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 8 states. [2019-11-06 21:22:48,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:48,311 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-11-06 21:22:48,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 21:22:48,312 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-11-06 21:22:48,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:48,313 INFO L225 Difference]: With dead ends: 24 [2019-11-06 21:22:48,313 INFO L226 Difference]: Without dead ends: 19 [2019-11-06 21:22:48,314 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:22:48,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-06 21:22:48,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-06 21:22:48,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-06 21:22:48,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-06 21:22:48,319 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 15 [2019-11-06 21:22:48,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:48,319 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-06 21:22:48,319 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:22:48,320 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-11-06 21:22:48,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-06 21:22:48,320 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:22:48,321 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:22:48,531 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:48,532 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:22:48,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:22:48,533 INFO L82 PathProgramCache]: Analyzing trace with hash -467892710, now seen corresponding path program 2 times [2019-11-06 21:22:48,533 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:22:48,533 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780174371] [2019-11-06 21:22:48,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:22:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:22:48,657 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:48,657 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780174371] [2019-11-06 21:22:48,661 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507810711] [2019-11-06 21:22:48,661 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:48,705 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-06 21:22:48,705 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 21:22:48,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-06 21:22:48,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:22:48,745 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:22:48,778 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:22:48,778 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:22:48,778 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-11-06 21:22:48,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109861778] [2019-11-06 21:22:48,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:22:48,780 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:22:48,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:22:48,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:22:48,781 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 10 states. [2019-11-06 21:22:48,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:48,830 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2019-11-06 21:22:48,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:22:48,831 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2019-11-06 21:22:48,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:48,831 INFO L225 Difference]: With dead ends: 19 [2019-11-06 21:22:48,832 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 21:22:48,833 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:22:48,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 21:22:48,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 21:22:48,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 21:22:48,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 21:22:48,834 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-11-06 21:22:48,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:48,834 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 21:22:48,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:22:48,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 21:22:48,835 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 21:22:49,038 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:49,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 21:22:49,097 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-06 21:22:49,098 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:22:49,098 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:22:49,098 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 21:22:49,098 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 21:22:49,100 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:22:49,100 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 19) the Hoare annotation is: true [2019-11-06 21:22:49,100 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 19) no Hoare annotation was computed. [2019-11-06 21:22:49,100 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-11-06 21:22:49,100 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 19) no Hoare annotation was computed. [2019-11-06 21:22:49,101 INFO L443 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-11-06 21:22:49,101 INFO L443 ceAbstractionStarter]: For program point L13-3(lines 13 16) no Hoare annotation was computed. [2019-11-06 21:22:49,101 INFO L439 ceAbstractionStarter]: At program point L13-5(lines 13 16) the Hoare annotation is: (and (<= main_~y~0 main_~x~0) (<= 0 main_~y~0) (<= 1 main_~x~0)) [2019-11-06 21:22:49,101 INFO L439 ceAbstractionStarter]: At program point L13-6(lines 13 16) the Hoare annotation is: (<= main_~y~0 main_~x~0) [2019-11-06 21:22:49,101 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-06 21:22:49,102 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-06 21:22:49,102 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:22:49,102 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-06 21:22:49,102 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-06 21:22:49,102 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-06 21:22:49,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:22:49 BoogieIcfgContainer [2019-11-06 21:22:49,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 21:22:49,118 INFO L168 Benchmark]: Toolchain (without parser) took 2219.95 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 103.1 MB in the beginning and 91.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 75.4 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:49,119 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-11-06 21:22:49,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.61 ms. Allocated memory is still 138.4 MB. Free memory was 103.1 MB in the beginning and 93.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:49,121 INFO L168 Benchmark]: Boogie Preprocessor took 100.16 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 93.8 MB in the beginning and 181.0 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:49,122 INFO L168 Benchmark]: RCFGBuilder took 220.61 ms. Allocated memory is still 201.9 MB. Free memory was 181.0 MB in the beginning and 169.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:49,123 INFO L168 Benchmark]: TraceAbstraction took 1659.04 ms. Allocated memory is still 201.9 MB. Free memory was 168.5 MB in the beginning and 91.1 MB in the end (delta: 77.4 MB). Peak memory consumption was 77.4 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:49,127 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 235.61 ms. Allocated memory is still 138.4 MB. Free memory was 103.1 MB in the beginning and 93.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.16 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 93.8 MB in the beginning and 181.0 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 220.61 ms. Allocated memory is still 201.9 MB. Free memory was 181.0 MB in the beginning and 169.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1659.04 ms. Allocated memory is still 201.9 MB. Free memory was 168.5 MB in the beginning and 91.1 MB in the end (delta: 77.4 MB). Peak memory consumption was 77.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 13]: Loop Invariant Derived loop invariant: (y <= x && 0 <= y) && 1 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 15 SDslu, 122 SDs, 0 SdLazy, 49 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 18 HoareAnnotationTreeSize, 10 FomulaSimplifications, 26 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 3102 SizeOfPredicates, 4 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...