/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:15:31,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:15:31,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:15:31,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:15:31,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:15:31,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:15:31,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:15:31,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:15:31,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:15:31,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:15:31,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:15:31,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:15:31,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:15:31,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:15:31,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:15:31,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:15:31,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:15:31,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:15:31,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:15:31,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:15:31,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:15:31,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:15:31,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:15:31,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:15:31,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:15:31,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 11:15:31,299 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:15:31,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:15:31,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:15:31,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:15:31,302 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:15:31,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:15:31,302 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:15:31,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:15:31,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:15:31,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:15:31,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:15:31,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:15:31,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:15:31,304 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:15:31,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:15:31,304 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:15:31,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:15:31,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:15:31,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:15:31,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:15:31,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:15:31,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:15:31,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:15:31,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:15:31,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:15:31,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:15:31,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:15:31,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:15:31,307 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:15:31,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:15:31,612 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:15:31,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:15:31,635 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:15:31,637 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:15:31,637 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:15:31,639 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c [2020-07-07 11:15:31,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ad41ceb0/13d815a03dec42c7b18962e2843c6d9b/FLAG34be76ec7 [2020-07-07 11:15:32,292 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:15:32,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_1b.cil.c [2020-07-07 11:15:32,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ad41ceb0/13d815a03dec42c7b18962e2843c6d9b/FLAG34be76ec7 [2020-07-07 11:15:32,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ad41ceb0/13d815a03dec42c7b18962e2843c6d9b [2020-07-07 11:15:32,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:15:32,646 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:15:32,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:15:32,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:15:32,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:15:32,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:15:32" (1/1) ... [2020-07-07 11:15:32,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ad145c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:32, skipping insertion in model container [2020-07-07 11:15:32,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:15:32" (1/1) ... [2020-07-07 11:15:32,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:15:32,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:15:32,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:15:32,899 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:15:32,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:15:32,935 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:15:32,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:32 WrapperNode [2020-07-07 11:15:32,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:15:32,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:15:32,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:15:32,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:15:32,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:32" (1/1) ... [2020-07-07 11:15:32,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:32" (1/1) ... [2020-07-07 11:15:33,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:32" (1/1) ... [2020-07-07 11:15:33,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:32" (1/1) ... [2020-07-07 11:15:33,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:32" (1/1) ... [2020-07-07 11:15:33,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:32" (1/1) ... [2020-07-07 11:15:33,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:32" (1/1) ... [2020-07-07 11:15:33,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:15:33,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:15:33,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:15:33,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:15:33,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:32" (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 [2020-07-07 11:15:33,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:15:33,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:15:33,139 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:15:33,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:15:33,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-07 11:15:33,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:15:33,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-07 11:15:33,140 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:15:33,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:15:33,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:15:33,386 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:15:33,387 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 11:15:33,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:15:33 BoogieIcfgContainer [2020-07-07 11:15:33,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:15:33,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:15:33,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:15:33,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:15:33,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:15:32" (1/3) ... [2020-07-07 11:15:33,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c219467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:15:33, skipping insertion in model container [2020-07-07 11:15:33,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:32" (2/3) ... [2020-07-07 11:15:33,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c219467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:15:33, skipping insertion in model container [2020-07-07 11:15:33,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:15:33" (3/3) ... [2020-07-07 11:15:33,401 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2020-07-07 11:15:33,412 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:15:33,420 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:15:33,435 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:15:33,459 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:15:33,460 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:15:33,460 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:15:33,460 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:15:33,461 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:15:33,461 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:15:33,461 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:15:33,461 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:15:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-07-07 11:15:33,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-07 11:15:33,488 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:33,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:33,490 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:33,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:33,495 INFO L82 PathProgramCache]: Analyzing trace with hash -2134687016, now seen corresponding path program 1 times [2020-07-07 11:15:33,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:33,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140437694] [2020-07-07 11:15:33,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:33,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140437694] [2020-07-07 11:15:33,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:33,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:33,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490288463] [2020-07-07 11:15:33,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:33,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:33,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:33,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:33,696 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-07-07 11:15:33,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:33,784 INFO L93 Difference]: Finished difference Result 70 states and 116 transitions. [2020-07-07 11:15:33,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:33,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-07-07 11:15:33,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:33,805 INFO L225 Difference]: With dead ends: 70 [2020-07-07 11:15:33,805 INFO L226 Difference]: Without dead ends: 39 [2020-07-07 11:15:33,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:33,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-07 11:15:33,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-07-07 11:15:33,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-07 11:15:33,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2020-07-07 11:15:33,944 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 8 [2020-07-07 11:15:33,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:33,945 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2020-07-07 11:15:33,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:33,946 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2020-07-07 11:15:33,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-07 11:15:33,947 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:33,947 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:33,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:15:33,949 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:33,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:33,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1966827798, now seen corresponding path program 1 times [2020-07-07 11:15:33,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:33,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725856627] [2020-07-07 11:15:33,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:33,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:33,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725856627] [2020-07-07 11:15:33,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:33,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:33,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230618977] [2020-07-07 11:15:33,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:33,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:33,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:33,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:33,990 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand 3 states. [2020-07-07 11:15:34,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:34,068 INFO L93 Difference]: Finished difference Result 87 states and 125 transitions. [2020-07-07 11:15:34,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:34,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-07 11:15:34,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:34,071 INFO L225 Difference]: With dead ends: 87 [2020-07-07 11:15:34,071 INFO L226 Difference]: Without dead ends: 53 [2020-07-07 11:15:34,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:34,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-07 11:15:34,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2020-07-07 11:15:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-07-07 11:15:34,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2020-07-07 11:15:34,085 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 13 [2020-07-07 11:15:34,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:34,086 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2020-07-07 11:15:34,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:34,086 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2020-07-07 11:15:34,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-07 11:15:34,087 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:34,087 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:34,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:15:34,088 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:34,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:34,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1966887380, now seen corresponding path program 1 times [2020-07-07 11:15:34,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:34,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526114334] [2020-07-07 11:15:34,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:34,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526114334] [2020-07-07 11:15:34,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:34,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:34,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857178120] [2020-07-07 11:15:34,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:34,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:34,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:34,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:34,130 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand 3 states. [2020-07-07 11:15:34,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:34,208 INFO L93 Difference]: Finished difference Result 93 states and 130 transitions. [2020-07-07 11:15:34,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:34,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-07 11:15:34,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:34,211 INFO L225 Difference]: With dead ends: 93 [2020-07-07 11:15:34,211 INFO L226 Difference]: Without dead ends: 70 [2020-07-07 11:15:34,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:34,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-07 11:15:34,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-07-07 11:15:34,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-07 11:15:34,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2020-07-07 11:15:34,228 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 13 [2020-07-07 11:15:34,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:34,228 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2020-07-07 11:15:34,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:34,229 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2020-07-07 11:15:34,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 11:15:34,230 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:34,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:34,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:15:34,231 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:34,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:34,232 INFO L82 PathProgramCache]: Analyzing trace with hash 280007728, now seen corresponding path program 1 times [2020-07-07 11:15:34,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:34,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304844761] [2020-07-07 11:15:34,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-07 11:15:34,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304844761] [2020-07-07 11:15:34,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:34,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:34,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928668012] [2020-07-07 11:15:34,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:34,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:34,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:34,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:34,277 INFO L87 Difference]: Start difference. First operand 70 states and 93 transitions. Second operand 3 states. [2020-07-07 11:15:34,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:34,334 INFO L93 Difference]: Finished difference Result 137 states and 187 transitions. [2020-07-07 11:15:34,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:34,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-07 11:15:34,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:34,336 INFO L225 Difference]: With dead ends: 137 [2020-07-07 11:15:34,337 INFO L226 Difference]: Without dead ends: 93 [2020-07-07 11:15:34,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:34,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-07-07 11:15:34,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-07-07 11:15:34,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-07-07 11:15:34,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 123 transitions. [2020-07-07 11:15:34,355 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 123 transitions. Word has length 20 [2020-07-07 11:15:34,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:34,355 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 123 transitions. [2020-07-07 11:15:34,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:34,356 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 123 transitions. [2020-07-07 11:15:34,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-07 11:15:34,357 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:34,357 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:34,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 11:15:34,358 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:34,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:34,358 INFO L82 PathProgramCache]: Analyzing trace with hash 885328029, now seen corresponding path program 1 times [2020-07-07 11:15:34,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:34,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800511061] [2020-07-07 11:15:34,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:34,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-07 11:15:34,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800511061] [2020-07-07 11:15:34,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:34,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:34,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146767510] [2020-07-07 11:15:34,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:34,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:34,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:34,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:34,420 INFO L87 Difference]: Start difference. First operand 91 states and 123 transitions. Second operand 3 states. [2020-07-07 11:15:34,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:34,548 INFO L93 Difference]: Finished difference Result 181 states and 245 transitions. [2020-07-07 11:15:34,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:34,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-07 11:15:34,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:34,555 INFO L225 Difference]: With dead ends: 181 [2020-07-07 11:15:34,556 INFO L226 Difference]: Without dead ends: 76 [2020-07-07 11:15:34,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:34,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-07 11:15:34,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-07-07 11:15:34,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-07 11:15:34,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 90 transitions. [2020-07-07 11:15:34,574 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 90 transitions. Word has length 23 [2020-07-07 11:15:34,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:34,575 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 90 transitions. [2020-07-07 11:15:34,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:34,575 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 90 transitions. [2020-07-07 11:15:34,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-07 11:15:34,577 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:34,577 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:34,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 11:15:34,578 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:34,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:34,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1155086362, now seen corresponding path program 1 times [2020-07-07 11:15:34,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:34,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902422304] [2020-07-07 11:15:34,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:34,635 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-07 11:15:34,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902422304] [2020-07-07 11:15:34,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:34,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:34,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160551873] [2020-07-07 11:15:34,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:34,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:34,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:34,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:34,639 INFO L87 Difference]: Start difference. First operand 74 states and 90 transitions. Second operand 3 states. [2020-07-07 11:15:34,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:34,660 INFO L93 Difference]: Finished difference Result 124 states and 147 transitions. [2020-07-07 11:15:34,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:34,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-07-07 11:15:34,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:34,661 INFO L225 Difference]: With dead ends: 124 [2020-07-07 11:15:34,661 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:15:34,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:34,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:15:34,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:15:34,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:15:34,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:15:34,664 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-07-07 11:15:34,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:34,665 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:15:34,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:34,665 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:15:34,665 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:15:34,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 11:15:34,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:15:34,930 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 11:15:34,930 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:15:34,930 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:15:34,930 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 11:15:34,931 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:15:34,931 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:15:34,931 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 8 140) no Hoare annotation was computed. [2020-07-07 11:15:34,931 INFO L268 CegarLoopResult]: For program point L77-1(lines 53 106) no Hoare annotation was computed. [2020-07-07 11:15:34,932 INFO L268 CegarLoopResult]: For program point L69(lines 69 73) no Hoare annotation was computed. [2020-07-07 11:15:34,932 INFO L268 CegarLoopResult]: For program point L24(lines 24 127) no Hoare annotation was computed. [2020-07-07 11:15:34,932 INFO L268 CegarLoopResult]: For program point L57-1(lines 53 106) no Hoare annotation was computed. [2020-07-07 11:15:34,933 INFO L268 CegarLoopResult]: For program point L49(lines 49 108) no Hoare annotation was computed. [2020-07-07 11:15:34,933 INFO L268 CegarLoopResult]: For program point L45(lines 45 110) no Hoare annotation was computed. [2020-07-07 11:15:34,933 INFO L271 CegarLoopResult]: At program point L136(lines 8 140) the Hoare annotation is: true [2020-07-07 11:15:34,933 INFO L264 CegarLoopResult]: At program point L99(lines 17 134) the Hoare annotation is: (or (and (not (= 0 main_~s__hit~0)) (<= main_~blastFlag~0 3) (<= 8640 main_~s__state~0)) (<= main_~blastFlag~0 2)) [2020-07-07 11:15:34,934 INFO L268 CegarLoopResult]: For program point L95(lines 95 97) no Hoare annotation was computed. [2020-07-07 11:15:34,934 INFO L268 CegarLoopResult]: For program point L29(lines 29 124) no Hoare annotation was computed. [2020-07-07 11:15:34,934 INFO L264 CegarLoopResult]: At program point L25(lines 24 127) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-07 11:15:34,934 INFO L264 CegarLoopResult]: At program point L50(lines 49 108) the Hoare annotation is: (let ((.cse0 (<= 8656 main_~s__state~0))) (or (and .cse0 (<= main_~blastFlag~0 2)) (and .cse0 (not (= 0 main_~s__hit~0)) (<= main_~blastFlag~0 3)))) [2020-07-07 11:15:34,935 INFO L264 CegarLoopResult]: At program point L46(lines 45 110) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and (<= main_~blastFlag~0 2) .cse0) (and (not (= 0 main_~s__hit~0)) (<= main_~blastFlag~0 3) .cse0))) [2020-07-07 11:15:34,935 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 8 140) no Hoare annotation was computed. [2020-07-07 11:15:34,935 INFO L264 CegarLoopResult]: At program point L96(lines 8 140) the Hoare annotation is: false [2020-07-07 11:15:34,936 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 138) no Hoare annotation was computed. [2020-07-07 11:15:34,936 INFO L264 CegarLoopResult]: At program point L30(lines 29 124) the Hoare annotation is: (<= main_~blastFlag~0 2) [2020-07-07 11:15:34,936 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 8 140) the Hoare annotation is: true [2020-07-07 11:15:34,936 INFO L268 CegarLoopResult]: For program point L92-1(lines 53 106) no Hoare annotation was computed. [2020-07-07 11:15:34,936 INFO L268 CegarLoopResult]: For program point L88-1(lines 53 106) no Hoare annotation was computed. [2020-07-07 11:15:34,936 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-07 11:15:34,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:15:34 BoogieIcfgContainer [2020-07-07 11:15:34,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:15:34,973 INFO L168 Benchmark]: Toolchain (without parser) took 2324.11 ms. Allocated memory was 137.4 MB in the beginning and 233.3 MB in the end (delta: 95.9 MB). Free memory was 100.9 MB in the beginning and 191.5 MB in the end (delta: -90.6 MB). Peak memory consumption was 85.2 MB. Max. memory is 7.1 GB. [2020-07-07 11:15:34,974 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-07 11:15:34,981 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.23 ms. Allocated memory is still 137.4 MB. Free memory was 100.7 MB in the beginning and 90.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-07 11:15:34,983 INFO L168 Benchmark]: Boogie Preprocessor took 129.16 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 90.3 MB in the beginning and 180.0 MB in the end (delta: -89.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-07-07 11:15:34,984 INFO L168 Benchmark]: RCFGBuilder took 325.09 ms. Allocated memory is still 201.9 MB. Free memory was 180.0 MB in the beginning and 166.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-07-07 11:15:34,986 INFO L168 Benchmark]: TraceAbstraction took 1574.65 ms. Allocated memory was 201.9 MB in the beginning and 233.3 MB in the end (delta: 31.5 MB). Free memory was 165.8 MB in the beginning and 191.5 MB in the end (delta: -25.7 MB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. [2020-07-07 11:15:34,999 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 289.23 ms. Allocated memory is still 137.4 MB. Free memory was 100.7 MB in the beginning and 90.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.16 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 90.3 MB in the beginning and 180.0 MB in the end (delta: -89.6 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 325.09 ms. Allocated memory is still 201.9 MB. Free memory was 180.0 MB in the beginning and 166.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1574.65 ms. Allocated memory was 201.9 MB in the beginning and 233.3 MB in the end (delta: 31.5 MB). Free memory was 165.8 MB in the beginning and 191.5 MB in the end (delta: -25.7 MB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 138]: 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: 49]: Loop Invariant Derived loop invariant: (8656 <= s__state && blastFlag <= 2) || ((8656 <= s__state && !(0 == s__hit)) && blastFlag <= 3) - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((!(0 == s__hit) && blastFlag <= 3) && 8640 <= s__state) || blastFlag <= 2 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: (blastFlag <= 2 && 8640 <= s__state) || ((!(0 == s__hit) && blastFlag <= 3) && 8640 <= s__state) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: blastFlag <= 2 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 184 SDtfs, 92 SDslu, 109 SDs, 0 SdLazy, 95 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 34 NumberOfFragments, 65 HoareAnnotationTreeSize, 11 FomulaSimplifications, 175 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 4626 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 42/42 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...