/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:46:30,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:46:30,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:46:30,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-06 22:46:30,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:46:30,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:46:30,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:46:30,686 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 22:46:30,749 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:46:30,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:46:30,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:46:30,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:46:30,756 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:46:30,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:46:30,757 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:46:30,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:46:30,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:46:30,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:46:30,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:46:30,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:46:30,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:46:30,759 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:46:30,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:46:30,760 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:46:30,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:46:30,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:46:30,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:46:30,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:46:30,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:46:30,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:46:30,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:46:30,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:46:30,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:46:30,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:46:30,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:46:30,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:46:30,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:46:30,763 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:46:31,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:46:31,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:46:31,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:46:31,276 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:46:31,277 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:46:31,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-11-06 22:46:31,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711029f4e/66fe957f4eca4aa687bdb781cd8b0a0d/FLAG8e99f0578 [2020-11-06 22:46:31,932 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:46:31,933 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-11-06 22:46:31,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711029f4e/66fe957f4eca4aa687bdb781cd8b0a0d/FLAG8e99f0578 [2020-11-06 22:46:32,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711029f4e/66fe957f4eca4aa687bdb781cd8b0a0d [2020-11-06 22:46:32,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:46:32,308 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:46:32,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:32,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:46:32,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:46:32,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:32" (1/1) ... [2020-11-06 22:46:32,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ea7430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:32, skipping insertion in model container [2020-11-06 22:46:32,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:32" (1/1) ... [2020-11-06 22:46:32,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:46:32,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:46:32,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:32,534 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:46:32,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:32,569 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:46:32,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:32 WrapperNode [2020-11-06 22:46:32,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:32,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:46:32,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:46:32,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:46:32,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:32" (1/1) ... [2020-11-06 22:46:32,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:32" (1/1) ... [2020-11-06 22:46:32,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:32" (1/1) ... [2020-11-06 22:46:32,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:32" (1/1) ... [2020-11-06 22:46:32,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:32" (1/1) ... [2020-11-06 22:46:32,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:32" (1/1) ... [2020-11-06 22:46:32,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:32" (1/1) ... [2020-11-06 22:46:32,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:46:32,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:46:32,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:46:32,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:46:32,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:46:32,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:46:32,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:46:32,687 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:46:32,688 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:46:32,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:46:32,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:46:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:46:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:46:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-06 22:46:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-06 22:46:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:46:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:46:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:46:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:46:32,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:46:32,690 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:46:32,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:46:32,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:46:32,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:46:32,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:46:32,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:46:32,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:46:32,926 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:46:32,926 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 22:46:32,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:32 BoogieIcfgContainer [2020-11-06 22:46:32,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:46:32,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:46:32,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:46:32,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:46:32,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:46:32" (1/3) ... [2020-11-06 22:46:32,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5efbf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:32, skipping insertion in model container [2020-11-06 22:46:32,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:32" (2/3) ... [2020-11-06 22:46:32,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5efbf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:32, skipping insertion in model container [2020-11-06 22:46:32,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:32" (3/3) ... [2020-11-06 22:46:32,968 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2020-11-06 22:46:33,010 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:46:33,034 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:46:33,066 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:46:33,122 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:46:33,122 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:46:33,123 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:46:33,123 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:46:33,123 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:46:33,123 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:46:33,123 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:46:33,123 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:46:33,158 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-11-06 22:46:33,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-06 22:46:33,165 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:33,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:33,166 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:33,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:33,174 INFO L82 PathProgramCache]: Analyzing trace with hash -151590239, now seen corresponding path program 1 times [2020-11-06 22:46:33,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:33,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734580987] [2020-11-06 22:46:33,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:33,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:33,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734580987] [2020-11-06 22:46:33,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:46:33,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:46:33,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694055525] [2020-11-06 22:46:33,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:46:33,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:33,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:46:33,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:46:33,661 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2020-11-06 22:46:33,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:33,905 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2020-11-06 22:46:33,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-06 22:46:33,907 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-06 22:46:33,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:33,915 INFO L225 Difference]: With dead ends: 48 [2020-11-06 22:46:33,915 INFO L226 Difference]: Without dead ends: 24 [2020-11-06 22:46:33,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:46:33,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-06 22:46:33,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-11-06 22:46:33,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-06 22:46:33,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-11-06 22:46:33,964 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 13 [2020-11-06 22:46:33,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:33,964 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-11-06 22:46:33,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:46:33,965 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-11-06 22:46:33,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-06 22:46:33,966 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:33,966 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:33,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:46:33,967 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:33,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:33,968 INFO L82 PathProgramCache]: Analyzing trace with hash -634161984, now seen corresponding path program 1 times [2020-11-06 22:46:33,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:33,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305564768] [2020-11-06 22:46:33,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:34,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:34,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:46:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:34,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305564768] [2020-11-06 22:46:34,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343001823] [2020-11-06 22:46:34,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -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 [2020-11-06 22:46:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:34,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-06 22:46:34,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:46:34,238 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:46:34,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:34,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:46:34,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2020-11-06 22:46:34,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714466666] [2020-11-06 22:46:34,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:46:34,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:34,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:46:34,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:46:34,283 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 10 states. [2020-11-06 22:46:34,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:34,536 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-11-06 22:46:34,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-06 22:46:34,537 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-11-06 22:46:34,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:34,538 INFO L225 Difference]: With dead ends: 35 [2020-11-06 22:46:34,538 INFO L226 Difference]: Without dead ends: 31 [2020-11-06 22:46:34,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-11-06 22:46:34,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-06 22:46:34,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-11-06 22:46:34,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-06 22:46:34,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-11-06 22:46:34,549 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 20 [2020-11-06 22:46:34,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:34,550 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-11-06 22:46:34,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:46:34,550 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-11-06 22:46:34,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-06 22:46:34,551 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:34,551 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:34,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-06 22:46:34,766 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:34,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:34,767 INFO L82 PathProgramCache]: Analyzing trace with hash 300685761, now seen corresponding path program 2 times [2020-11-06 22:46:34,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:34,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893805367] [2020-11-06 22:46:34,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:34,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:34,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:46:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:34,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-06 22:46:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:34,918 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-06 22:46:34,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893805367] [2020-11-06 22:46:34,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578451871] [2020-11-06 22:46:34,919 INFO L93 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 [2020-11-06 22:46:34,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:46:34,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:46:34,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-06 22:46:34,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:46:35,008 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:46:35,044 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-06 22:46:35,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:46:35,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-11-06 22:46:35,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187796490] [2020-11-06 22:46:35,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 22:46:35,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:35,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 22:46:35,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-06 22:46:35,047 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 11 states. [2020-11-06 22:46:35,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:35,302 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-11-06 22:46:35,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:46:35,302 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-11-06 22:46:35,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:35,304 INFO L225 Difference]: With dead ends: 42 [2020-11-06 22:46:35,304 INFO L226 Difference]: Without dead ends: 38 [2020-11-06 22:46:35,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-11-06 22:46:35,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-06 22:46:35,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-11-06 22:46:35,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-06 22:46:35,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-11-06 22:46:35,314 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 27 [2020-11-06 22:46:35,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:35,315 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-11-06 22:46:35,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 22:46:35,315 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-11-06 22:46:35,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-06 22:46:35,316 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:35,317 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:35,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:46:35,533 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:35,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:35,534 INFO L82 PathProgramCache]: Analyzing trace with hash -989789792, now seen corresponding path program 3 times [2020-11-06 22:46:35,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:35,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68207699] [2020-11-06 22:46:35,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:35,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:35,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:46:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:35,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-06 22:46:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:35,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-11-06 22:46:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-06 22:46:35,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68207699] [2020-11-06 22:46:35,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268997778] [2020-11-06 22:46:35,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-11-06 22:46:35,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-06 22:46:35,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:46:35,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-06 22:46:35,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:46:35,852 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:46:35,891 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-06 22:46:35,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:46:35,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2020-11-06 22:46:35,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406277846] [2020-11-06 22:46:35,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-06 22:46:35,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:35,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-06 22:46:35,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-11-06 22:46:35,896 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 15 states. [2020-11-06 22:46:36,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:36,353 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2020-11-06 22:46:36,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-06 22:46:36,353 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2020-11-06 22:46:36,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:36,354 INFO L225 Difference]: With dead ends: 42 [2020-11-06 22:46:36,354 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:46:36,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2020-11-06 22:46:36,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:46:36,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:46:36,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:46:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:46:36,356 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-11-06 22:46:36,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:36,356 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:46:36,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-06 22:46:36,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:46:36,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:46:36,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:46:36,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:46:36,779 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-11-06 22:46:36,779 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-11-06 22:46:36,780 INFO L266 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-11-06 22:46:36,780 INFO L266 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-06 22:46:36,780 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-06 22:46:36,780 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:46:36,780 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-11-06 22:46:36,781 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:46:36,781 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:46:36,781 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:46:36,781 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:46:36,781 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:46:36,781 INFO L266 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-06 22:46:36,781 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:46:36,782 INFO L266 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:46:36,782 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:46:36,782 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 24 30) the Hoare annotation is: true [2020-11-06 22:46:36,782 INFO L262 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (and (<= main_~i~0 1000000) (not (= main_~i~0 1000000))) [2020-11-06 22:46:36,782 INFO L266 CegarLoopResult]: For program point L27-1(lines 26 28) no Hoare annotation was computed. [2020-11-06 22:46:36,782 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 24 30) no Hoare annotation was computed. [2020-11-06 22:46:36,783 INFO L262 CegarLoopResult]: At program point L26-2(lines 26 28) the Hoare annotation is: (< main_~i~0 1000001) [2020-11-06 22:46:36,783 INFO L266 CegarLoopResult]: For program point L26-3(lines 26 28) no Hoare annotation was computed. [2020-11-06 22:46:36,783 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 24 30) no Hoare annotation was computed. [2020-11-06 22:46:36,783 INFO L266 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-11-06 22:46:36,783 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-11-06 22:46:36,783 INFO L266 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-11-06 22:46:36,784 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-11-06 22:46:36,784 INFO L266 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-06 22:46:36,784 INFO L266 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-11-06 22:46:36,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:46:36 BoogieIcfgContainer [2020-11-06 22:46:36,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:46:36,803 INFO L168 Benchmark]: Toolchain (without parser) took 4498.57 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 138.8 MB in the beginning and 171.5 MB in the end (delta: -32.7 MB). Peak memory consumption was 102.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:36,804 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 162.5 MB. Free memory is still 135.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:46:36,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.85 ms. Allocated memory is still 162.5 MB. Free memory was 138.0 MB in the beginning and 128.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:36,806 INFO L168 Benchmark]: Boogie Preprocessor took 36.88 ms. Allocated memory is still 162.5 MB. Free memory was 128.8 MB in the beginning and 127.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:36,806 INFO L168 Benchmark]: RCFGBuilder took 320.59 ms. Allocated memory is still 162.5 MB. Free memory was 127.3 MB in the beginning and 114.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:36,807 INFO L168 Benchmark]: TraceAbstraction took 3868.80 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 114.0 MB in the beginning and 171.5 MB in the end (delta: -57.6 MB). Peak memory consumption was 78.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:36,811 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 162.5 MB. Free memory is still 135.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 259.85 ms. Allocated memory is still 162.5 MB. Free memory was 138.0 MB in the beginning and 128.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.88 ms. Allocated memory is still 162.5 MB. Free memory was 128.8 MB in the beginning and 127.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 320.59 ms. Allocated memory is still 162.5 MB. Free memory was 127.3 MB in the beginning and 114.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3868.80 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 114.0 MB in the beginning and 171.5 MB in the end (delta: -57.6 MB). Peak memory consumption was 78.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 26]: Loop Invariant Derived loop invariant: i < 1000001 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 97 SDslu, 122 SDs, 0 SdLazy, 271 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 22 PreInvPairs, 33 NumberOfFragments, 45 HoareAnnotationTreeSize, 22 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 419 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 175 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 10120 SizeOfPredicates, 7 NumberOfNonLiveVariables, 285 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 69/104 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...