/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 --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -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 0.1.25-79ed534 [2020-07-20 06:08:53,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 06:08:53,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 06:08:53,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 06:08:53,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 06:08:53,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 06:08:53,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 06:08:53,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 06:08:53,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 06:08:53,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 06:08:53,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 06:08:53,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 06:08:53,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 06:08:53,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 06:08:53,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 06:08:53,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 06:08:53,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 06:08:53,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 06:08:53,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 06:08:53,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 06:08:53,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 06:08:53,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 06:08:53,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 06:08:53,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 06:08:53,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 06:08:53,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 06:08:53,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 06:08:53,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 06:08:53,561 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 [2020-07-20 06:08:53,585 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 06:08:53,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 06:08:53,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 06:08:53,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 06:08:53,588 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 06:08:53,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 06:08:53,588 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 06:08:53,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 06:08:53,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 06:08:53,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 06:08:53,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 06:08:53,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 06:08:53,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 06:08:53,590 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 06:08:53,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 06:08:53,590 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 06:08:53,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 06:08:53,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 06:08:53,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 06:08:53,591 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 06:08:53,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 06:08:53,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:08:53,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 06:08:53,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 06:08:53,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 06:08:53,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 06:08:53,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 06:08:53,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 06:08:53,593 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 06:08:53,593 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 06:08:53,997 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 06:08:54,017 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 06:08:54,021 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 06:08:54,022 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 06:08:54,023 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 06:08:54,024 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2020-07-20 06:08:54,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c5a425a1/303dad215b544ea29aaa032ac3d1d35a/FLAGd5f94e0cd [2020-07-20 06:08:54,869 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 06:08:54,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2020-07-20 06:08:54,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c5a425a1/303dad215b544ea29aaa032ac3d1d35a/FLAGd5f94e0cd [2020-07-20 06:08:55,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c5a425a1/303dad215b544ea29aaa032ac3d1d35a [2020-07-20 06:08:55,068 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 06:08:55,071 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 06:08:55,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 06:08:55,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 06:08:55,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 06:08:55,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:08:55" (1/1) ... [2020-07-20 06:08:55,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c1a81ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:08:55, skipping insertion in model container [2020-07-20 06:08:55,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:08:55" (1/1) ... [2020-07-20 06:08:55,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 06:08:55,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 06:08:55,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:08:55,398 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 06:08:55,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:08:55,455 INFO L208 MainTranslator]: Completed translation [2020-07-20 06:08:55,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:08:55 WrapperNode [2020-07-20 06:08:55,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 06:08:55,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 06:08:55,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 06:08:55,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 06:08:55,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:08:55" (1/1) ... [2020-07-20 06:08:55,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:08:55" (1/1) ... [2020-07-20 06:08:55,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:08:55" (1/1) ... [2020-07-20 06:08:55,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:08:55" (1/1) ... [2020-07-20 06:08:55,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:08:55" (1/1) ... [2020-07-20 06:08:55,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:08:55" (1/1) ... [2020-07-20 06:08:55,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:08:55" (1/1) ... [2020-07-20 06:08:55,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 06:08:55,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 06:08:55,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 06:08:55,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 06:08:55,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:08:55" (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 [2020-07-20 06:08:55,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 06:08:55,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 06:08:55,780 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 06:08:55,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 06:08:55,780 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 06:08:55,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 06:08:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 06:08:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 06:08:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 06:08:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 06:08:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 06:08:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 06:08:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 06:08:56,283 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 06:08:56,284 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 06:08:56,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:08:56 BoogieIcfgContainer [2020-07-20 06:08:56,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 06:08:56,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 06:08:56,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 06:08:56,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 06:08:56,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:08:55" (1/3) ... [2020-07-20 06:08:56,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6551835b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:08:56, skipping insertion in model container [2020-07-20 06:08:56,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:08:55" (2/3) ... [2020-07-20 06:08:56,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6551835b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:08:56, skipping insertion in model container [2020-07-20 06:08:56,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:08:56" (3/3) ... [2020-07-20 06:08:56,300 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i [2020-07-20 06:08:56,311 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 06:08:56,323 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 06:08:56,341 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 06:08:56,370 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 06:08:56,371 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 06:08:56,372 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 06:08:56,372 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 06:08:56,372 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 06:08:56,372 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 06:08:56,372 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 06:08:56,373 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 06:08:56,401 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-07-20 06:08:56,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 06:08:56,409 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:08:56,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:08:56,411 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:08:56,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:08:56,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1626077920, now seen corresponding path program 1 times [2020-07-20 06:08:56,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:08:56,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471744930] [2020-07-20 06:08:56,432 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@650e11d5 [2020-07-20 06:08:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:08:56,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471744930] [2020-07-20 06:08:56,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:08:56,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:08:56,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822179322] [2020-07-20 06:08:56,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:08:56,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:08:56,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:08:56,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:08:56,773 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 5 states. [2020-07-20 06:08:57,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:08:57,306 INFO L93 Difference]: Finished difference Result 111 states and 206 transitions. [2020-07-20 06:08:57,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 06:08:57,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-20 06:08:57,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:08:57,338 INFO L225 Difference]: With dead ends: 111 [2020-07-20 06:08:57,339 INFO L226 Difference]: Without dead ends: 63 [2020-07-20 06:08:57,351 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 [2020-07-20 06:08:57,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-20 06:08:57,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2020-07-20 06:08:57,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-20 06:08:57,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2020-07-20 06:08:57,475 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 16 [2020-07-20 06:08:57,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:08:57,477 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2020-07-20 06:08:57,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:08:57,477 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2020-07-20 06:08:57,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 06:08:57,484 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:08:57,485 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] [2020-07-20 06:08:57,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 06:08:57,486 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:08:57,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:08:57,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1393145919, now seen corresponding path program 1 times [2020-07-20 06:08:57,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:08:57,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700461050] [2020-07-20 06:08:57,490 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@650e11d5 [2020-07-20 06:08:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:08:57,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700461050] [2020-07-20 06:08:57,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:08:57,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 06:08:57,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128421592] [2020-07-20 06:08:57,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 06:08:57,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:08:57,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 06:08:57,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 06:08:57,692 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand 6 states. [2020-07-20 06:08:58,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:08:58,055 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2020-07-20 06:08:58,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 06:08:58,058 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-07-20 06:08:58,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:08:58,067 INFO L225 Difference]: With dead ends: 62 [2020-07-20 06:08:58,067 INFO L226 Difference]: Without dead ends: 60 [2020-07-20 06:08:58,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 06:08:58,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-20 06:08:58,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-07-20 06:08:58,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 06:08:58,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 82 transitions. [2020-07-20 06:08:58,102 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 82 transitions. Word has length 21 [2020-07-20 06:08:58,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:08:58,103 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 82 transitions. [2020-07-20 06:08:58,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 06:08:58,103 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 82 transitions. [2020-07-20 06:08:58,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-20 06:08:58,105 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:08:58,106 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] [2020-07-20 06:08:58,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 06:08:58,107 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:08:58,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:08:58,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1101915893, now seen corresponding path program 1 times [2020-07-20 06:08:58,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:08:58,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120562179] [2020-07-20 06:08:58,110 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@650e11d5 [2020-07-20 06:08:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-07-20 06:08:58,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120562179] [2020-07-20 06:08:58,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:08:58,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 06:08:58,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066193528] [2020-07-20 06:08:58,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 06:08:58,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:08:58,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 06:08:58,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 06:08:58,298 INFO L87 Difference]: Start difference. First operand 60 states and 82 transitions. Second operand 3 states. [2020-07-20 06:08:58,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:08:58,343 INFO L93 Difference]: Finished difference Result 89 states and 122 transitions. [2020-07-20 06:08:58,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 06:08:58,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-07-20 06:08:58,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:08:58,345 INFO L225 Difference]: With dead ends: 89 [2020-07-20 06:08:58,346 INFO L226 Difference]: Without dead ends: 60 [2020-07-20 06:08:58,347 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 [2020-07-20 06:08:58,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-20 06:08:58,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-07-20 06:08:58,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 06:08:58,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2020-07-20 06:08:58,362 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 50 [2020-07-20 06:08:58,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:08:58,363 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2020-07-20 06:08:58,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 06:08:58,363 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2020-07-20 06:08:58,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 06:08:58,366 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:08:58,366 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] [2020-07-20 06:08:58,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 06:08:58,368 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:08:58,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:08:58,368 INFO L82 PathProgramCache]: Analyzing trace with hash 668905142, now seen corresponding path program 1 times [2020-07-20 06:08:58,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:08:58,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157870645] [2020-07-20 06:08:58,369 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@650e11d5 [2020-07-20 06:08:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:58,649 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-07-20 06:08:58,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157870645] [2020-07-20 06:08:58,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:08:58,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 06:08:58,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603768575] [2020-07-20 06:08:58,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 06:08:58,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:08:58,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 06:08:58,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 06:08:58,653 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand 6 states. [2020-07-20 06:08:58,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:08:58,915 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2020-07-20 06:08:58,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 06:08:58,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-07-20 06:08:58,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:08:58,918 INFO L225 Difference]: With dead ends: 67 [2020-07-20 06:08:58,918 INFO L226 Difference]: Without dead ends: 65 [2020-07-20 06:08:58,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-20 06:08:58,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-07-20 06:08:58,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-07-20 06:08:58,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-20 06:08:58,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2020-07-20 06:08:58,936 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 51 [2020-07-20 06:08:58,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:08:58,937 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2020-07-20 06:08:58,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 06:08:58,938 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2020-07-20 06:08:58,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-20 06:08:58,942 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:08:58,942 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] [2020-07-20 06:08:58,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 06:08:58,943 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:08:58,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:08:58,943 INFO L82 PathProgramCache]: Analyzing trace with hash -702087769, now seen corresponding path program 1 times [2020-07-20 06:08:58,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:08:58,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015605395] [2020-07-20 06:08:58,944 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@650e11d5 [2020-07-20 06:08:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,288 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-07-20 06:08:59,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015605395] [2020-07-20 06:08:59,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:08:59,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 06:08:59,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352884781] [2020-07-20 06:08:59,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 06:08:59,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:08:59,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 06:08:59,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 06:08:59,292 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand 7 states. [2020-07-20 06:08:59,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:08:59,489 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2020-07-20 06:08:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 06:08:59,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-07-20 06:08:59,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:08:59,492 INFO L225 Difference]: With dead ends: 83 [2020-07-20 06:08:59,492 INFO L226 Difference]: Without dead ends: 81 [2020-07-20 06:08:59,493 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 [2020-07-20 06:08:59,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-20 06:08:59,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2020-07-20 06:08:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-20 06:08:59,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 97 transitions. [2020-07-20 06:08:59,515 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 97 transitions. Word has length 86 [2020-07-20 06:08:59,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:08:59,516 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 97 transitions. [2020-07-20 06:08:59,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 06:08:59,516 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 97 transitions. [2020-07-20 06:08:59,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-07-20 06:08:59,522 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:08:59,523 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] [2020-07-20 06:08:59,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 06:08:59,524 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:08:59,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:08:59,525 INFO L82 PathProgramCache]: Analyzing trace with hash 58209754, now seen corresponding path program 1 times [2020-07-20 06:08:59,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:08:59,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505253970] [2020-07-20 06:08:59,526 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@650e11d5 [2020-07-20 06:08:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:08:59,794 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-07-20 06:08:59,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505253970] [2020-07-20 06:08:59,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:08:59,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 06:08:59,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756180641] [2020-07-20 06:08:59,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 06:08:59,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:08:59,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 06:08:59,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 06:08:59,798 INFO L87 Difference]: Start difference. First operand 75 states and 97 transitions. Second operand 6 states. [2020-07-20 06:09:00,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:09:00,042 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2020-07-20 06:09:00,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 06:09:00,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-07-20 06:09:00,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:09:00,046 INFO L225 Difference]: With dead ends: 81 [2020-07-20 06:09:00,047 INFO L226 Difference]: Without dead ends: 79 [2020-07-20 06:09:00,047 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 [2020-07-20 06:09:00,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-07-20 06:09:00,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-07-20 06:09:00,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-20 06:09:00,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2020-07-20 06:09:00,066 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 91 [2020-07-20 06:09:00,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:09:00,068 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2020-07-20 06:09:00,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 06:09:00,068 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2020-07-20 06:09:00,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-07-20 06:09:00,076 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:09:00,076 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] [2020-07-20 06:09:00,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 06:09:00,079 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:09:00,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:09:00,082 INFO L82 PathProgramCache]: Analyzing trace with hash 299780712, now seen corresponding path program 1 times [2020-07-20 06:09:00,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:09:00,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429791484] [2020-07-20 06:09:00,084 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@650e11d5 [2020-07-20 06:09:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:09:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2020-07-20 06:09:00,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429791484] [2020-07-20 06:09:00,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:09:00,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 06:09:00,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303221321] [2020-07-20 06:09:00,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 06:09:00,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:09:00,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 06:09:00,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 06:09:00,458 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand 6 states. [2020-07-20 06:09:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:09:00,593 INFO L93 Difference]: Finished difference Result 82 states and 103 transitions. [2020-07-20 06:09:00,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 06:09:00,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-07-20 06:09:00,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:09:00,596 INFO L225 Difference]: With dead ends: 82 [2020-07-20 06:09:00,596 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 06:09:00,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-20 06:09:00,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 06:09:00,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 06:09:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 06:09:00,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 06:09:00,605 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 120 [2020-07-20 06:09:00,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:09:00,605 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 06:09:00,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 06:09:00,606 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 06:09:00,606 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 06:09:00,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 06:09:00,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 06:09:01,228 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 06:09:01,228 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 06:09:01,228 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 06:09:01,228 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 06:09:01,228 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 06:09:01,228 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 06:09:01,229 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 06:09:01,229 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 06:09:01,229 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 06:09:01,229 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 06:09:01,230 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) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0) (< main_~c~0 main_~tokenlen~0)) [2020-07-20 06:09:01,230 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) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0) (< main_~c~0 main_~tokenlen~0)) [2020-07-20 06:09:01,230 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 72) no Hoare annotation was computed. [2020-07-20 06:09:01,230 INFO L264 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (= 0 main_~c~0) (< main_~cp~0 main_~urilen~0)) [2020-07-20 06:09:01,231 INFO L264 CegarLoopResult]: At program point L52-1(line 52) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (= 0 main_~c~0) (< main_~cp~0 main_~urilen~0)) [2020-07-20 06:09:01,231 INFO L264 CegarLoopResult]: At program point L36-1(lines 35 41) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-07-20 06:09:01,231 INFO L264 CegarLoopResult]: At program point L36-2(lines 36 41) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-07-20 06:09:01,231 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) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0) (< main_~c~0 main_~tokenlen~0)) [2020-07-20 06:09:01,232 INFO L264 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-07-20 06:09:01,232 INFO L264 CegarLoopResult]: At program point L45-1(line 45) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-07-20 06:09:01,232 INFO L271 CegarLoopResult]: At program point L70(lines 14 72) the Hoare annotation is: true [2020-07-20 06:09:01,232 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-20 06:09:01,233 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) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0) (< main_~c~0 main_~tokenlen~0)) [2020-07-20 06:09:01,233 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-07-20 06:09:01,233 INFO L264 CegarLoopResult]: At program point L54-1(lines 53 66) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse1 (<= 1 main_~cp~0)) (.cse2 (< main_~cp~0 main_~urilen~0))) (or (and .cse0 (<= 1 main_~c~0) .cse1 .cse2 (< main_~c~0 main_~tokenlen~0)) (and .cse0 .cse1 (= 0 main_~c~0) .cse2))) [2020-07-20 06:09:01,233 INFO L268 CegarLoopResult]: For program point L46(lines 33 69) no Hoare annotation was computed. [2020-07-20 06:09:01,234 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 72) no Hoare annotation was computed. [2020-07-20 06:09:01,234 INFO L264 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-07-20 06:09:01,234 INFO L264 CegarLoopResult]: At program point L38-1(line 38) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2020-07-20 06:09:01,234 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 72) the Hoare annotation is: true [2020-07-20 06:09:01,234 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-20 06:09:01,235 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-07-20 06:09:01,235 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-07-20 06:09:01,235 INFO L264 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-07-20 06:09:01,235 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 (not (= (+ main_~cp~0 1) main_~urilen~0))) (.cse4 (< main_~cp~0 main_~urilen~0))) (or (and .cse0 .cse1 .cse2 .cse3 (= 0 main_~c~0) .cse4) (and .cse0 .cse1 (<= 1 main_~c~0) .cse2 .cse3 .cse4))) [2020-07-20 06:09:01,235 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-07-20 06:09:01,236 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 (not (= (+ main_~cp~0 1) main_~urilen~0))) (.cse4 (< main_~cp~0 main_~urilen~0))) (or (and .cse0 .cse1 .cse2 .cse3 (= 0 main_~c~0) .cse4) (and .cse0 .cse1 (<= 1 main_~c~0) .cse2 .cse3 .cse4))) [2020-07-20 06:09:01,236 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-07-20 06:09:01,236 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-07-20 06:09:01,236 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-07-20 06:09:01,236 INFO L268 CegarLoopResult]: For program point L24-1(lines 14 72) no Hoare annotation was computed. [2020-07-20 06:09:01,236 INFO L268 CegarLoopResult]: For program point L33(lines 33 69) no Hoare annotation was computed. [2020-07-20 06:09:01,236 INFO L268 CegarLoopResult]: For program point L58(lines 58 64) no Hoare annotation was computed. [2020-07-20 06:09:01,237 INFO L268 CegarLoopResult]: For program point L25(lines 14 72) no Hoare annotation was computed. [2020-07-20 06:09:01,237 INFO L268 CegarLoopResult]: For program point L58-1(lines 58 64) no Hoare annotation was computed. [2020-07-20 06:09:01,237 INFO L268 CegarLoopResult]: For program point L50(lines 50 68) no Hoare annotation was computed. [2020-07-20 06:09:01,237 INFO L264 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-07-20 06:09:01,237 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-07-20 06:09:01,237 INFO L264 CegarLoopResult]: At program point L34-1(line 34) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2020-07-20 06:09:01,238 INFO L268 CegarLoopResult]: For program point L26(lines 14 72) no Hoare annotation was computed. [2020-07-20 06:09:01,238 INFO L268 CegarLoopResult]: For program point L43(lines 33 69) no Hoare annotation was computed. [2020-07-20 06:09:01,238 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-20 06:09:01,238 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-20 06:09:01,238 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-20 06:09:01,238 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-20 06:09:01,238 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-20 06:09:01,239 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-20 06:09:01,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:09:01 BoogieIcfgContainer [2020-07-20 06:09:01,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 06:09:01,302 INFO L168 Benchmark]: Toolchain (without parser) took 6221.25 ms. Allocated memory was 135.8 MB in the beginning and 252.2 MB in the end (delta: 116.4 MB). Free memory was 100.0 MB in the beginning and 100.4 MB in the end (delta: -416.7 kB). Peak memory consumption was 116.0 MB. Max. memory is 7.1 GB. [2020-07-20 06:09:01,303 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 135.8 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 06:09:01,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.59 ms. Allocated memory is still 135.8 MB. Free memory was 99.8 MB in the beginning and 89.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-20 06:09:01,305 INFO L168 Benchmark]: Boogie Preprocessor took 213.41 ms. Allocated memory was 135.8 MB in the beginning and 201.9 MB in the end (delta: 66.1 MB). Free memory was 89.4 MB in the beginning and 179.9 MB in the end (delta: -90.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-20 06:09:01,306 INFO L168 Benchmark]: RCFGBuilder took 616.45 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 161.3 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2020-07-20 06:09:01,307 INFO L168 Benchmark]: TraceAbstraction took 4999.38 ms. Allocated memory was 201.9 MB in the beginning and 252.2 MB in the end (delta: 50.3 MB). Free memory was 160.6 MB in the beginning and 100.4 MB in the end (delta: 60.2 MB). Peak memory consumption was 110.5 MB. Max. memory is 7.1 GB. [2020-07-20 06:09:01,318 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 135.8 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 385.59 ms. Allocated memory is still 135.8 MB. Free memory was 99.8 MB in the beginning and 89.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 213.41 ms. Allocated memory was 135.8 MB in the beginning and 201.9 MB in the end (delta: 66.1 MB). Free memory was 89.4 MB in the beginning and 179.9 MB in the end (delta: -90.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 616.45 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 161.3 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4999.38 ms. Allocated memory was 201.9 MB in the beginning and 252.2 MB in the end (delta: 50.3 MB). Free memory was 160.6 MB in the beginning and 100.4 MB in the end (delta: 60.2 MB). Peak memory consumption was 110.5 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 && 1 <= cp) && cp < urilen - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: ((((0 < scheme + 1 && 1 <= c) && 1 <= cp) && cp < urilen) && c < tokenlen) || (((0 < scheme + 1 && 1 <= cp) && 0 == c) && cp < urilen) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 7, TraceHistogramMax: 19, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 461 SDtfs, 100 SDslu, 1249 SDs, 0 SdLazy, 396 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s 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, 108 NumberOfFragments, 440 HoareAnnotationTreeSize, 77 FomulaSimplifications, 380 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 26 FomulaSimplificationsInter, 107 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 435 NumberOfCodeBlocks, 435 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 428 ConstructedInterpolants, 0 QuantifiedInterpolants, 48206 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 1426/1426 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...