/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:33:29,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:33:29,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:33:29,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:33:29,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:33:29,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:33:29,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:33:29,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:33:29,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:33:29,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:33:29,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:33:29,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:33:29,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:33:29,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:33:29,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:33:29,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:33:29,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:33:29,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:33:29,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:33:29,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:33:29,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:33:29,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:33:29,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:33:29,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:33:29,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:33:29,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:33:29,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:33:29,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:33:29,253 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 11:33:29,268 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:33:29,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:33:29,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:33:29,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:33:29,270 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:33:29,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:33:29,270 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:33:29,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:33:29,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:33:29,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:33:29,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:33:29,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:33:29,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:33:29,272 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:33:29,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:33:29,272 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:33:29,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:33:29,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:33:29,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:33:29,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:33:29,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:33:29,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:33:29,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:33:29,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:33:29,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:33:29,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:33:29,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:33:29,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:33:29,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:33:29,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:33:29,574 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:33:29,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:33:29,592 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:33:29,593 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:33:29,594 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:33:29,595 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2020-07-07 11:33:29,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dea82e062/2dc95dc29bc44545bd0f873be5239d94/FLAGbbf23567b [2020-07-07 11:33:30,185 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:33:30,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2020-07-07 11:33:30,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dea82e062/2dc95dc29bc44545bd0f873be5239d94/FLAGbbf23567b [2020-07-07 11:33:30,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dea82e062/2dc95dc29bc44545bd0f873be5239d94 [2020-07-07 11:33:30,553 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:33:30,555 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:33:30,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:33:30,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:33:30,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:33:30,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:33:30" (1/1) ... [2020-07-07 11:33:30,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5155a845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:30, skipping insertion in model container [2020-07-07 11:33:30,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:33:30" (1/1) ... [2020-07-07 11:33:30,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:33:30,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:33:30,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:33:30,815 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:33:30,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:33:30,861 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:33:30,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:30 WrapperNode [2020-07-07 11:33:30,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:33:30,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:33:30,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:33:30,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:33:30,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:30" (1/1) ... [2020-07-07 11:33:30,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:30" (1/1) ... [2020-07-07 11:33:30,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:30" (1/1) ... [2020-07-07 11:33:30,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:30" (1/1) ... [2020-07-07 11:33:30,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:30" (1/1) ... [2020-07-07 11:33:30,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:30" (1/1) ... [2020-07-07 11:33:30,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:30" (1/1) ... [2020-07-07 11:33:30,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:33:30,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:33:30,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:33:30,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:33:30,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:30" (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 11:33:31,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:33:31,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:33:31,071 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:33:31,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 11:33:31,071 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:33:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:33:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:33:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:33:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:33:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:33:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:33:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:33:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:33:31,417 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:33:31,417 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-07 11:33:31,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:33:31 BoogieIcfgContainer [2020-07-07 11:33:31,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:33:31,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:33:31,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:33:31,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:33:31,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:33:30" (1/3) ... [2020-07-07 11:33:31,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39633478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:33:31, skipping insertion in model container [2020-07-07 11:33:31,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:30" (2/3) ... [2020-07-07 11:33:31,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39633478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:33:31, skipping insertion in model container [2020-07-07 11:33:31,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:33:31" (3/3) ... [2020-07-07 11:33:31,457 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i [2020-07-07 11:33:31,477 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:33:31,485 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:33:31,501 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:33:31,528 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:33:31,528 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:33:31,528 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:33:31,528 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:33:31,529 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:33:31,529 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:33:31,529 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:33:31,529 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:33:31,549 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-07-07 11:33:31,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-07 11:33:31,556 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:31,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:31,557 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:31,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:31,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1626077920, now seen corresponding path program 1 times [2020-07-07 11:33:31,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:31,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824087533] [2020-07-07 11:33:31,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:31,781 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 11:33:31,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824087533] [2020-07-07 11:33:31,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:31,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:33:31,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519356277] [2020-07-07 11:33:31,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:33:31,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:31,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:33:31,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:33:31,804 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 5 states. [2020-07-07 11:33:32,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:32,083 INFO L93 Difference]: Finished difference Result 111 states and 206 transitions. [2020-07-07 11:33:32,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:33:32,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-07 11:33:32,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:32,100 INFO L225 Difference]: With dead ends: 111 [2020-07-07 11:33:32,100 INFO L226 Difference]: Without dead ends: 63 [2020-07-07 11:33:32,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:33:32,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-07 11:33:32,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2020-07-07 11:33:32,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-07 11:33:32,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2020-07-07 11:33:32,177 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 16 [2020-07-07 11:33:32,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:32,178 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2020-07-07 11:33:32,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:33:32,178 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2020-07-07 11:33:32,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 11:33:32,181 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:32,181 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:32,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:33:32,182 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:32,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:32,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1393145919, now seen corresponding path program 1 times [2020-07-07 11:33:32,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:32,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639964194] [2020-07-07 11:33:32,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:32,293 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 11:33:32,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639964194] [2020-07-07 11:33:32,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:32,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 11:33:32,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400886017] [2020-07-07 11:33:32,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:33:32,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:32,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:33:32,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:33:32,298 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand 6 states. [2020-07-07 11:33:32,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:32,522 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2020-07-07 11:33:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:33:32,523 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-07-07 11:33:32,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:32,527 INFO L225 Difference]: With dead ends: 62 [2020-07-07 11:33:32,528 INFO L226 Difference]: Without dead ends: 60 [2020-07-07 11:33:32,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:33:32,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-07 11:33:32,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-07-07 11:33:32,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-07 11:33:32,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 82 transitions. [2020-07-07 11:33:32,548 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 82 transitions. Word has length 21 [2020-07-07 11:33:32,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:32,548 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 82 transitions. [2020-07-07 11:33:32,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:33:32,549 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 82 transitions. [2020-07-07 11:33:32,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-07 11:33:32,551 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:32,552 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:32,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:33:32,552 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:32,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:32,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1101915893, now seen corresponding path program 1 times [2020-07-07 11:33:32,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:32,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357736344] [2020-07-07 11:33:32,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:32,742 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-07-07 11:33:32,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357736344] [2020-07-07 11:33:32,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:32,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:33:32,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125178590] [2020-07-07 11:33:32,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:33:32,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:32,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:33:32,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:33:32,746 INFO L87 Difference]: Start difference. First operand 60 states and 82 transitions. Second operand 3 states. [2020-07-07 11:33:32,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:32,778 INFO L93 Difference]: Finished difference Result 89 states and 122 transitions. [2020-07-07 11:33:32,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:33:32,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-07-07 11:33:32,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:32,781 INFO L225 Difference]: With dead ends: 89 [2020-07-07 11:33:32,781 INFO L226 Difference]: Without dead ends: 60 [2020-07-07 11:33:32,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 11:33:32,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-07 11:33:32,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-07-07 11:33:32,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-07 11:33:32,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2020-07-07 11:33:32,799 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 50 [2020-07-07 11:33:32,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:32,800 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2020-07-07 11:33:32,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:33:32,800 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2020-07-07 11:33:32,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-07 11:33:32,802 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:32,803 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:32,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:33:32,803 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:32,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:32,804 INFO L82 PathProgramCache]: Analyzing trace with hash 668905142, now seen corresponding path program 1 times [2020-07-07 11:33:32,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:32,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976727167] [2020-07-07 11:33:32,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:32,918 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-07-07 11:33:32,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976727167] [2020-07-07 11:33:32,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:32,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 11:33:32,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885582966] [2020-07-07 11:33:32,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:33:32,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:32,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:33:32,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:33:32,921 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand 6 states. [2020-07-07 11:33:33,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:33,090 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2020-07-07 11:33:33,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:33:33,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-07-07 11:33:33,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:33,093 INFO L225 Difference]: With dead ends: 67 [2020-07-07 11:33:33,093 INFO L226 Difference]: Without dead ends: 65 [2020-07-07 11:33:33,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:33:33,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-07-07 11:33:33,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-07-07 11:33:33,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-07 11:33:33,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2020-07-07 11:33:33,108 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 51 [2020-07-07 11:33:33,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:33,109 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2020-07-07 11:33:33,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:33:33,109 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2020-07-07 11:33:33,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-07 11:33:33,112 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:33,112 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:33,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 11:33:33,113 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:33,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:33,113 INFO L82 PathProgramCache]: Analyzing trace with hash -702087769, now seen corresponding path program 1 times [2020-07-07 11:33:33,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:33,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564751451] [2020-07-07 11:33:33,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-07-07 11:33:33,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564751451] [2020-07-07 11:33:33,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:33,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 11:33:33,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983313751] [2020-07-07 11:33:33,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 11:33:33,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:33,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 11:33:33,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:33:33,272 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand 7 states. [2020-07-07 11:33:33,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:33,398 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2020-07-07 11:33:33,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 11:33:33,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-07-07 11:33:33,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:33,402 INFO L225 Difference]: With dead ends: 83 [2020-07-07 11:33:33,402 INFO L226 Difference]: Without dead ends: 81 [2020-07-07 11:33:33,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:33:33,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-07 11:33:33,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2020-07-07 11:33:33,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-07 11:33:33,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 97 transitions. [2020-07-07 11:33:33,418 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 97 transitions. Word has length 86 [2020-07-07 11:33:33,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:33,419 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 97 transitions. [2020-07-07 11:33:33,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 11:33:33,419 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 97 transitions. [2020-07-07 11:33:33,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-07-07 11:33:33,422 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:33,423 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:33,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 11:33:33,424 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:33,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:33,424 INFO L82 PathProgramCache]: Analyzing trace with hash 58209754, now seen corresponding path program 1 times [2020-07-07 11:33:33,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:33,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153026995] [2020-07-07 11:33:33,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,565 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-07-07 11:33:33,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153026995] [2020-07-07 11:33:33,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:33,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 11:33:33,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205510417] [2020-07-07 11:33:33,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:33:33,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:33,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:33:33,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:33:33,571 INFO L87 Difference]: Start difference. First operand 75 states and 97 transitions. Second operand 6 states. [2020-07-07 11:33:33,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:33,711 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2020-07-07 11:33:33,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:33:33,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-07-07 11:33:33,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:33,714 INFO L225 Difference]: With dead ends: 81 [2020-07-07 11:33:33,714 INFO L226 Difference]: Without dead ends: 79 [2020-07-07 11:33:33,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:33:33,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-07-07 11:33:33,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-07-07 11:33:33,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-07 11:33:33,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2020-07-07 11:33:33,729 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 91 [2020-07-07 11:33:33,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:33,730 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2020-07-07 11:33:33,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:33:33,730 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2020-07-07 11:33:33,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-07-07 11:33:33,733 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:33,733 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:33,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 11:33:33,734 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:33,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:33,734 INFO L82 PathProgramCache]: Analyzing trace with hash 299780712, now seen corresponding path program 1 times [2020-07-07 11:33:33,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:33,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944960183] [2020-07-07 11:33:33,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:33,977 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 37 proven. 5 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-07-07 11:33:33,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944960183] [2020-07-07 11:33:33,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559356303] [2020-07-07 11:33:33,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:34,061 INFO L264 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-07 11:33:34,090 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:34,163 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:34,202 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2020-07-07 11:33:34,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:33:34,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2020-07-07 11:33:34,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144653110] [2020-07-07 11:33:34,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:33:34,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:34,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:33:34,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-07 11:33:34,205 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand 6 states. [2020-07-07 11:33:34,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:34,294 INFO L93 Difference]: Finished difference Result 82 states and 103 transitions. [2020-07-07 11:33:34,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:33:34,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-07-07 11:33:34,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:34,296 INFO L225 Difference]: With dead ends: 82 [2020-07-07 11:33:34,296 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:33:34,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:33:34,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:33:34,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:33:34,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:33:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:33:34,299 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 120 [2020-07-07 11:33:34,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:34,300 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:33:34,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:33:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:33:34,300 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:33:34,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-07 11:33:34,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:33:35,035 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 11:33:35,036 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:33:35,036 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:33:35,036 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 11:33:35,037 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:33:35,037 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:33:35,037 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-07 11:33:35,037 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-07 11:33:35,037 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-07 11:33:35,038 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-07 11:33:35,041 INFO L264 CegarLoopResult]: At program point L60(line 60) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~c~0) (<= 1 main_~cp~0) (< (+ main_~cp~0 1) main_~urilen~0) (< main_~c~0 main_~tokenlen~0)) [2020-07-07 11:33:35,042 INFO L264 CegarLoopResult]: At program point L60-1(line 60) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~c~0) (<= 1 main_~cp~0) (< (+ main_~cp~0 1) main_~urilen~0) (< main_~c~0 main_~tokenlen~0)) [2020-07-07 11:33:35,045 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 72) no Hoare annotation was computed. [2020-07-07 11:33:35,046 INFO L264 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< (+ main_~cp~0 1) main_~urilen~0) (= 0 main_~c~0)) [2020-07-07 11:33:35,046 INFO L264 CegarLoopResult]: At program point L52-1(line 52) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< (+ main_~cp~0 1) main_~urilen~0) (= 0 main_~c~0)) [2020-07-07 11:33:35,046 INFO L264 CegarLoopResult]: At program point L36-1(lines 35 41) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 1 main_~cp~0)) [2020-07-07 11:33:35,046 INFO L264 CegarLoopResult]: At program point L36-2(lines 36 41) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 1 main_~cp~0)) [2020-07-07 11:33:35,047 INFO L264 CegarLoopResult]: At program point L61(line 61) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~c~0) (<= 1 main_~cp~0) (< (+ main_~cp~0 1) main_~urilen~0) (< main_~c~0 main_~tokenlen~0)) [2020-07-07 11:33:35,047 INFO L264 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< (+ main_~cp~0 1) main_~urilen~0)) [2020-07-07 11:33:35,047 INFO L264 CegarLoopResult]: At program point L45-1(line 45) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< (+ main_~cp~0 1) main_~urilen~0)) [2020-07-07 11:33:35,054 INFO L271 CegarLoopResult]: At program point L70(lines 14 72) the Hoare annotation is: true [2020-07-07 11:33:35,054 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-07 11:33:35,054 INFO L264 CegarLoopResult]: At program point L62(line 62) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~c~0) (<= 1 main_~cp~0) (< (+ main_~cp~0 1) main_~urilen~0) (< main_~c~0 main_~tokenlen~0)) [2020-07-07 11:33:35,054 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-07-07 11:33:35,055 INFO L264 CegarLoopResult]: At program point L54-1(lines 53 66) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse1 (<= (+ main_~cp~0 1) main_~urilen~0)) (.cse2 (<= 1 main_~cp~0))) (or (and .cse0 (<= 1 main_~c~0) .cse1 .cse2 (< main_~c~0 main_~tokenlen~0)) (and .cse0 .cse1 .cse2 (= 0 main_~c~0)))) [2020-07-07 11:33:35,055 INFO L268 CegarLoopResult]: For program point L46(lines 33 69) no Hoare annotation was computed. [2020-07-07 11:33:35,055 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 72) no Hoare annotation was computed. [2020-07-07 11:33:35,055 INFO L264 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< (+ main_~cp~0 1) main_~urilen~0)) [2020-07-07 11:33:35,055 INFO L264 CegarLoopResult]: At program point L38-1(line 38) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< (+ main_~cp~0 1) main_~urilen~0)) [2020-07-07 11:33:35,056 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 72) the Hoare annotation is: true [2020-07-07 11:33:35,056 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-07 11:33:35,056 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-07-07 11:33:35,056 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 1 main_~cp~0)) [2020-07-07 11:33:35,058 INFO L264 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 1 main_~cp~0)) [2020-07-07 11:33:35,059 INFO L264 CegarLoopResult]: At program point L56(line 56) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse1 (<= (+ main_~c~0 2) main_~tokenlen~0)) (.cse2 (<= 1 main_~cp~0)) (.cse3 (< (+ main_~cp~0 1) main_~urilen~0))) (or (and .cse0 .cse1 .cse2 .cse3 (= 0 main_~c~0)) (and .cse0 .cse1 (<= 1 main_~c~0) .cse2 .cse3))) [2020-07-07 11:33:35,059 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-07-07 11:33:35,059 INFO L264 CegarLoopResult]: At program point L56-1(line 56) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse1 (<= (+ main_~c~0 2) main_~tokenlen~0)) (.cse2 (<= 1 main_~cp~0)) (.cse3 (< (+ main_~cp~0 1) main_~urilen~0))) (or (and .cse0 .cse1 .cse2 .cse3 (= 0 main_~c~0)) (and .cse0 .cse1 (<= 1 main_~c~0) .cse2 .cse3))) [2020-07-07 11:33:35,059 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-07-07 11:33:35,060 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-07-07 11:33:35,060 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-07-07 11:33:35,060 INFO L268 CegarLoopResult]: For program point L24-1(lines 14 72) no Hoare annotation was computed. [2020-07-07 11:33:35,060 INFO L268 CegarLoopResult]: For program point L33(lines 33 69) no Hoare annotation was computed. [2020-07-07 11:33:35,060 INFO L268 CegarLoopResult]: For program point L58(lines 58 64) no Hoare annotation was computed. [2020-07-07 11:33:35,060 INFO L268 CegarLoopResult]: For program point L25(lines 14 72) no Hoare annotation was computed. [2020-07-07 11:33:35,060 INFO L268 CegarLoopResult]: For program point L58-1(lines 58 64) no Hoare annotation was computed. [2020-07-07 11:33:35,061 INFO L268 CegarLoopResult]: For program point L50(lines 50 68) no Hoare annotation was computed. [2020-07-07 11:33:35,061 INFO L264 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse2 (<= 1 main_~cp~0)) (.cse1 (+ main_~cp~0 1))) (or (and .cse0 (= .cse1 main_~urilen~0) .cse2) (and .cse0 .cse2 (< .cse1 main_~urilen~0)))) [2020-07-07 11:33:35,061 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 1 main_~cp~0)) [2020-07-07 11:33:35,062 INFO L264 CegarLoopResult]: At program point L34-1(line 34) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= (+ main_~cp~0 1) main_~urilen~0) (<= 1 main_~cp~0)) [2020-07-07 11:33:35,062 INFO L268 CegarLoopResult]: For program point L26(lines 14 72) no Hoare annotation was computed. [2020-07-07 11:33:35,062 INFO L268 CegarLoopResult]: For program point L43(lines 33 69) no Hoare annotation was computed. [2020-07-07 11:33:35,062 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-07 11:33:35,063 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-07 11:33:35,063 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-07 11:33:35,063 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-07 11:33:35,063 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-07 11:33:35,063 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-07 11:33:35,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:33:35 BoogieIcfgContainer [2020-07-07 11:33:35,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:33:35,111 INFO L168 Benchmark]: Toolchain (without parser) took 4552.73 ms. Allocated memory was 144.7 MB in the beginning and 248.0 MB in the end (delta: 103.3 MB). Free memory was 101.4 MB in the beginning and 190.4 MB in the end (delta: -89.0 MB). Peak memory consumption was 110.7 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:35,115 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 11:33:35,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.31 ms. Allocated memory is still 144.7 MB. Free memory was 101.2 MB in the beginning and 90.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:35,118 INFO L168 Benchmark]: Boogie Preprocessor took 42.93 ms. Allocated memory is still 144.7 MB. Free memory was 90.7 MB in the beginning and 89.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:35,119 INFO L168 Benchmark]: RCFGBuilder took 517.34 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 88.9 MB in the beginning and 162.3 MB in the end (delta: -73.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:35,121 INFO L168 Benchmark]: TraceAbstraction took 3680.54 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 162.3 MB in the beginning and 190.4 MB in the end (delta: -28.1 MB). Peak memory consumption was 113.9 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:35,132 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 306.31 ms. Allocated memory is still 144.7 MB. Free memory was 101.2 MB in the beginning and 90.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.93 ms. Allocated memory is still 144.7 MB. Free memory was 90.7 MB in the beginning and 89.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 517.34 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 88.9 MB in the beginning and 162.3 MB in the end (delta: -73.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3680.54 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 162.3 MB in the beginning and 190.4 MB in the end (delta: -28.1 MB). Peak memory consumption was 113.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (0 < scheme + 1 && cp + 1 <= urilen) && 1 <= cp - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: ((((0 < scheme + 1 && 1 <= c) && cp + 1 <= urilen) && 1 <= cp) && c < tokenlen) || (((0 < scheme + 1 && cp + 1 <= urilen) && 1 <= cp) && 0 == c) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 7, TraceHistogramMax: 19, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 461 SDtfs, 103 SDslu, 1199 SDs, 0 SdLazy, 391 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 294 GetRequests, 256 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 26 LocationsWithAnnotation, 77 PreInvPairs, 107 NumberOfFragments, 417 HoareAnnotationTreeSize, 77 FomulaSimplifications, 185 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 26 FomulaSimplificationsInter, 197 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 555 NumberOfCodeBlocks, 555 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 547 ConstructedInterpolants, 0 QuantifiedInterpolants, 66101 SizeOfPredicates, 2 NumberOfNonLiveVariables, 240 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 2075/2080 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...