/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/loop-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:57:29,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:57:29,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:57:29,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-23 06:57:29,622 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 06:57:29,674 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:57:29,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:57:29,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:57:29,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:57:29,679 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:57:29,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:57:29,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:57:29,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:57:29,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:57:29,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:57:29,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:57:29,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:57:29,682 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:57:29,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:57:29,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:57:29,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:57:29,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:57:29,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:57:29,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:57:29,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:57:29,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:57:29,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:57:29,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:57:29,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:57:29,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:57:29,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:57:30,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:57:30,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:57:30,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:57:30,192 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:57:30,196 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:57:30,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-new/count_by_1_variant.i [2020-12-23 06:57:30,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f1cd7fb0d/b221dfae8c7347d082e10ce1038c792a/FLAG56de7878f [2020-12-23 06:57:30,964 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:57:30,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-new/count_by_1_variant.i [2020-12-23 06:57:30,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f1cd7fb0d/b221dfae8c7347d082e10ce1038c792a/FLAG56de7878f [2020-12-23 06:57:31,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f1cd7fb0d/b221dfae8c7347d082e10ce1038c792a [2020-12-23 06:57:31,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:57:31,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:57:31,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:57:31,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:57:31,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:57:31,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:57:31" (1/1) ... [2020-12-23 06:57:31,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c5b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:57:31, skipping insertion in model container [2020-12-23 06:57:31,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:57:31" (1/1) ... [2020-12-23 06:57:31,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:57:31,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 06:57:31,551 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-new/count_by_1_variant.i[891,904] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 06:57:31,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:57:31,572 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 06:57:31,586 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/loop-new/count_by_1_variant.i[891,904] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2020-12-23 06:57:31,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:57:31,604 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:57:31,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:57:31 WrapperNode [2020-12-23 06:57:31,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:57:31,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:57:31,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:57:31,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:57:31,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:57:31" (1/1) ... [2020-12-23 06:57:31,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:57:31" (1/1) ... [2020-12-23 06:57:31,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:57:31,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:57:31,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:57:31,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:57:31,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:57:31" (1/1) ... [2020-12-23 06:57:31,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:57:31" (1/1) ... [2020-12-23 06:57:31,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:57:31" (1/1) ... [2020-12-23 06:57:31,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:57:31" (1/1) ... [2020-12-23 06:57:31,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:57:31" (1/1) ... [2020-12-23 06:57:31,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:57:31" (1/1) ... [2020-12-23 06:57:31,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:57:31" (1/1) ... [2020-12-23 06:57:31,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:57:31,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:57:31,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:57:31,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:57:31,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:57:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 06:57:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:57:31,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:57:31,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:57:31,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:57:31,978 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:57:31,979 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-23 06:57:31,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:57:31 BoogieIcfgContainer [2020-12-23 06:57:31,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:57:31,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:57:31,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:57:31,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:57:31,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:57:31" (1/3) ... [2020-12-23 06:57:31,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409cc0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:57:31, skipping insertion in model container [2020-12-23 06:57:31,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:57:31" (2/3) ... [2020-12-23 06:57:31,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409cc0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:57:31, skipping insertion in model container [2020-12-23 06:57:31,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:57:31" (3/3) ... [2020-12-23 06:57:31,991 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2020-12-23 06:57:31,999 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:57:32,004 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:57:32,031 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:57:32,062 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:57:32,062 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:57:32,063 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:57:32,063 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:57:32,063 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:57:32,063 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:57:32,063 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:57:32,064 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:57:32,080 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-23 06:57:32,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-23 06:57:32,087 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:57:32,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-23 06:57:32,088 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:57:32,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:57:32,098 INFO L82 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2020-12-23 06:57:32,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:57:32,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820554527] [2020-12-23 06:57:32,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:57:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:32,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:32,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820554527] [2020-12-23 06:57:32,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:57:32,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:57:32,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861253311] [2020-12-23 06:57:32,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:57:32,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:57:32,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:57:32,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:57:32,451 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2020-12-23 06:57:32,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:57:32,581 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2020-12-23 06:57:32,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 06:57:32,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-23 06:57:32,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:57:32,597 INFO L225 Difference]: With dead ends: 27 [2020-12-23 06:57:32,597 INFO L226 Difference]: Without dead ends: 10 [2020-12-23 06:57:32,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:57:32,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-23 06:57:32,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-12-23 06:57:32,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-23 06:57:32,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-12-23 06:57:32,641 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2020-12-23 06:57:32,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:57:32,641 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-12-23 06:57:32,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:57:32,642 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-12-23 06:57:32,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 06:57:32,642 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:57:32,643 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-12-23 06:57:32,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:57:32,644 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:57:32,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:57:32,647 INFO L82 PathProgramCache]: Analyzing trace with hash 271133217, now seen corresponding path program 1 times [2020-12-23 06:57:32,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:57:32,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411767925] [2020-12-23 06:57:32,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:57:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:32,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411767925] [2020-12-23 06:57:32,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154352221] [2020-12-23 06:57:32,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 06:57:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:32,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 06:57:32,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:57:32,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:32,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:57:32,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-12-23 06:57:32,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214350280] [2020-12-23 06:57:32,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 06:57:32,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:57:33,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 06:57:33,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 06:57:33,003 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2020-12-23 06:57:33,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:57:33,064 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-12-23 06:57:33,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 06:57:33,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-12-23 06:57:33,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:57:33,065 INFO L225 Difference]: With dead ends: 16 [2020-12-23 06:57:33,066 INFO L226 Difference]: Without dead ends: 14 [2020-12-23 06:57:33,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 06:57:33,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-23 06:57:33,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2020-12-23 06:57:33,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-23 06:57:33,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-12-23 06:57:33,076 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2020-12-23 06:57:33,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:57:33,078 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-12-23 06:57:33,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 06:57:33,078 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-12-23 06:57:33,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 06:57:33,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:57:33,080 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-12-23 06:57:33,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 06:57:33,292 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:57:33,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:57:33,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1498979959, now seen corresponding path program 2 times [2020-12-23 06:57:33,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:57:33,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664766854] [2020-12-23 06:57:33,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:57:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:33,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:33,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664766854] [2020-12-23 06:57:33,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535950863] [2020-12-23 06:57:33,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 06:57:33,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 06:57:33,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:57:33,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 06:57:33,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:57:33,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:33,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:57:33,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-12-23 06:57:33,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237522204] [2020-12-23 06:57:33,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 06:57:33,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:57:33,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 06:57:33,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-23 06:57:33,445 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 8 states. [2020-12-23 06:57:33,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:57:33,497 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-12-23 06:57:33,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 06:57:33,497 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-12-23 06:57:33,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:57:33,498 INFO L225 Difference]: With dead ends: 19 [2020-12-23 06:57:33,498 INFO L226 Difference]: Without dead ends: 17 [2020-12-23 06:57:33,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-12-23 06:57:33,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-23 06:57:33,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2020-12-23 06:57:33,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-23 06:57:33,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-23 06:57:33,505 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2020-12-23 06:57:33,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:57:33,505 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-23 06:57:33,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 06:57:33,505 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-23 06:57:33,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 06:57:33,506 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:57:33,506 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2020-12-23 06:57:33,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:57:33,721 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:57:33,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:57:33,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1332145887, now seen corresponding path program 3 times [2020-12-23 06:57:33,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:57:33,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298172632] [2020-12-23 06:57:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:57:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:57:33,784 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:57:33,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298172632] [2020-12-23 06:57:33,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134148275] [2020-12-23 06:57:33,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:57:33,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 06:57:33,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 06:57:33,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 06:57:33,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 06:57:33,962 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 06:57:33,980 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 06:57:33,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 06:57:33,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-12-23 06:57:33,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723384021] [2020-12-23 06:57:33,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 06:57:33,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:57:33,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 06:57:33,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-12-23 06:57:33,988 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 12 states. [2020-12-23 06:57:34,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:57:34,215 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-12-23 06:57:34,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 06:57:34,216 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-12-23 06:57:34,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:57:34,216 INFO L225 Difference]: With dead ends: 20 [2020-12-23 06:57:34,217 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 06:57:34,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=197, Unknown=0, NotChecked=0, Total=306 [2020-12-23 06:57:34,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 06:57:34,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 06:57:34,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 06:57:34,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 06:57:34,220 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-12-23 06:57:34,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:57:34,220 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 06:57:34,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 06:57:34,221 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 06:57:34,221 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 06:57:34,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 06:57:34,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 06:57:34,589 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 06:57:34,589 INFO L185 CegarLoopUtils]: At program point L29(lines 24 30) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 1000000) [2020-12-23 06:57:34,589 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2020-12-23 06:57:34,590 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 06:57:34,590 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 06:57:34,590 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 06:57:34,590 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-23 06:57:34,590 INFO L185 CegarLoopUtils]: At program point L26-2(lines 26 28) the Hoare annotation is: (or (= ULTIMATE.start_main_~i~0 0) (and (< ULTIMATE.start_main_~i~0 1000001) (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) [2020-12-23 06:57:34,590 INFO L189 CegarLoopUtils]: For program point L26-3(lines 26 28) no Hoare annotation was computed. [2020-12-23 06:57:34,591 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-12-23 06:57:34,591 INFO L185 CegarLoopUtils]: At program point L18-2(lines 1 30) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~i~0 1000000)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~i~0 1000000)) [2020-12-23 06:57:34,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:57:34 BoogieIcfgContainer [2020-12-23 06:57:34,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:57:34,609 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:57:34,609 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:57:34,610 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:57:34,610 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:57:31" (3/4) ... [2020-12-23 06:57:34,614 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 06:57:34,625 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-23 06:57:34,625 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 06:57:34,626 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 06:57:34,626 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 06:57:34,665 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-new/count_by_1_variant.i-witness.graphml [2020-12-23 06:57:34,665 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:57:34,667 INFO L168 Benchmark]: Toolchain (without parser) took 3355.47 ms. Allocated memory was 176.2 MB in the beginning and 222.3 MB in the end (delta: 46.1 MB). Free memory was 151.9 MB in the beginning and 182.9 MB in the end (delta: -30.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. [2020-12-23 06:57:34,668 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 176.2 MB. Free memory is still 148.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:57:34,669 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.75 ms. Allocated memory is still 176.2 MB. Free memory was 151.7 MB in the beginning and 142.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 06:57:34,669 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.54 ms. Allocated memory is still 176.2 MB. Free memory was 142.1 MB in the beginning and 140.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:57:34,670 INFO L168 Benchmark]: Boogie Preprocessor took 19.64 ms. Allocated memory is still 176.2 MB. Free memory was 140.9 MB in the beginning and 139.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:57:34,671 INFO L168 Benchmark]: RCFGBuilder took 321.25 ms. Allocated memory is still 176.2 MB. Free memory was 139.8 MB in the beginning and 129.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 06:57:34,672 INFO L168 Benchmark]: TraceAbstraction took 2625.55 ms. Allocated memory was 176.2 MB in the beginning and 222.3 MB in the end (delta: 46.1 MB). Free memory was 129.1 MB in the beginning and 185.0 MB in the end (delta: -55.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:57:34,673 INFO L168 Benchmark]: Witness Printer took 55.95 ms. Allocated memory is still 222.3 MB. Free memory was 185.0 MB in the beginning and 182.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:57:34,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 176.2 MB. Free memory is still 148.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 292.75 ms. Allocated memory is still 176.2 MB. Free memory was 151.7 MB in the beginning and 142.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 32.54 ms. Allocated memory is still 176.2 MB. Free memory was 142.1 MB in the beginning and 140.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 19.64 ms. Allocated memory is still 176.2 MB. Free memory was 140.9 MB in the beginning and 139.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 321.25 ms. Allocated memory is still 176.2 MB. Free memory was 139.8 MB in the beginning and 129.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2625.55 ms. Allocated memory was 176.2 MB in the beginning and 222.3 MB in the end (delta: 46.1 MB). Free memory was 129.1 MB in the beginning and 185.0 MB in the end (delta: -55.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 55.95 ms. Allocated memory is still 222.3 MB. Free memory was 185.0 MB in the beginning and 182.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (!(i == 1000000) && 1 == cond) && i <= 1000000 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: i <= 1000000 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: i == 0 || (i < 1000001 && 1 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 57 SDslu, 34 SDs, 0 SdLazy, 58 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=3, 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, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 16 NumberOfFragments, 25 HoareAnnotationTreeSize, 3 FomulaSimplifications, 392 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 138 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 71 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 1890 SizeOfPredicates, 11 NumberOfNonLiveVariables, 145 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 9/48 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...