/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 DAGSIZE --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 04:00:41,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 04:00:41,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 04:00:41,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 04:00:41,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 04:00:41,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 04:00:41,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 04:00:41,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 04:00:41,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 04:00:41,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 04:00:41,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 04:00:41,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 04:00:41,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 04:00:41,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 04:00:41,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 04:00:41,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 04:00:41,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 04:00:41,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 04:00:41,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 04:00:41,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 04:00:41,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 04:00:41,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 04:00:41,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 04:00:41,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 04:00:41,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 04:00:41,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 04:00:41,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 04:00:41,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 04:00:41,537 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 04:00:41,560 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 04:00:41,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 04:00:41,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 04:00:41,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 04:00:41,564 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 04:00:41,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 04:00:41,564 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 04:00:41,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 04:00:41,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 04:00:41,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 04:00:41,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 04:00:41,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 04:00:41,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 04:00:41,567 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 04:00:41,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 04:00:41,568 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 04:00:41,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 04:00:41,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 04:00:41,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 04:00:41,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 04:00:41,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 04:00:41,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 04:00:41,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 04:00:41,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 04:00:41,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 04:00:41,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 04:00:41,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 04:00:41,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 04:00:41,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 04:00:41,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE 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 04:00:41,896 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 04:00:41,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 04:00:41,913 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 04:00:41,915 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 04:00:41,915 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 04:00:41,916 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2020-07-20 04:00:41,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc6f04e62/ba5843cf6b7243ff8e8e3fa8f5bdf146/FLAG0a89538e8 [2020-07-20 04:00:42,485 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 04:00:42,485 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2020-07-20 04:00:42,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc6f04e62/ba5843cf6b7243ff8e8e3fa8f5bdf146/FLAG0a89538e8 [2020-07-20 04:00:42,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc6f04e62/ba5843cf6b7243ff8e8e3fa8f5bdf146 [2020-07-20 04:00:42,844 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 04:00:42,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 04:00:42,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 04:00:42,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 04:00:42,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 04:00:42,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:00:42" (1/1) ... [2020-07-20 04:00:42,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bbde3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:42, skipping insertion in model container [2020-07-20 04:00:42,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:00:42" (1/1) ... [2020-07-20 04:00:42,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 04:00:42,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 04:00:43,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 04:00:43,078 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 04:00:43,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 04:00:43,139 INFO L208 MainTranslator]: Completed translation [2020-07-20 04:00:43,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:43 WrapperNode [2020-07-20 04:00:43,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 04:00:43,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 04:00:43,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 04:00:43,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 04:00:43,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:43" (1/1) ... [2020-07-20 04:00:43,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:43" (1/1) ... [2020-07-20 04:00:43,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:43" (1/1) ... [2020-07-20 04:00:43,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:43" (1/1) ... [2020-07-20 04:00:43,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:43" (1/1) ... [2020-07-20 04:00:43,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:43" (1/1) ... [2020-07-20 04:00:43,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:43" (1/1) ... [2020-07-20 04:00:43,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 04:00:43,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 04:00:43,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 04:00:43,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 04:00:43,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:43" (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 04:00:43,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 04:00:43,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 04:00:43,324 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 04:00:43,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 04:00:43,324 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 04:00:43,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 04:00:43,324 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 04:00:43,325 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 04:00:43,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 04:00:43,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 04:00:43,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 04:00:43,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 04:00:43,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 04:00:43,639 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 04:00:43,640 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 04:00:43,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:00:43 BoogieIcfgContainer [2020-07-20 04:00:43,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 04:00:43,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 04:00:43,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 04:00:43,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 04:00:43,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:00:42" (1/3) ... [2020-07-20 04:00:43,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fbc60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:00:43, skipping insertion in model container [2020-07-20 04:00:43,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:00:43" (2/3) ... [2020-07-20 04:00:43,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30fbc60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:00:43, skipping insertion in model container [2020-07-20 04:00:43,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:00:43" (3/3) ... [2020-07-20 04:00:43,654 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i [2020-07-20 04:00:43,665 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 04:00:43,673 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 04:00:43,689 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 04:00:43,718 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 04:00:43,718 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 04:00:43,718 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 04:00:43,719 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 04:00:43,719 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 04:00:43,719 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 04:00:43,719 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 04:00:43,719 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 04:00:43,753 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-07-20 04:00:43,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 04:00:43,760 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:00:43,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 04:00:43,762 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:00:43,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:00:43,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1626077920, now seen corresponding path program 1 times [2020-07-20 04:00:43,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:00:43,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776855443] [2020-07-20 04:00:43,775 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@623802df [2020-07-20 04:00:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:43,994 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 04:00:43,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776855443] [2020-07-20 04:00:43,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:00:43,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 04:00:43,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954515821] [2020-07-20 04:00:44,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 04:00:44,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:00:44,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 04:00:44,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 04:00:44,022 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 5 states. [2020-07-20 04:00:44,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:00:44,283 INFO L93 Difference]: Finished difference Result 111 states and 206 transitions. [2020-07-20 04:00:44,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 04:00:44,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-20 04:00:44,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:00:44,300 INFO L225 Difference]: With dead ends: 111 [2020-07-20 04:00:44,300 INFO L226 Difference]: Without dead ends: 63 [2020-07-20 04:00:44,306 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 04:00:44,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-20 04:00:44,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2020-07-20 04:00:44,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-20 04:00:44,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2020-07-20 04:00:44,368 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 16 [2020-07-20 04:00:44,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:00:44,369 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2020-07-20 04:00:44,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 04:00:44,369 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2020-07-20 04:00:44,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 04:00:44,371 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:00:44,372 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 04:00:44,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 04:00:44,373 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:00:44,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:00:44,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1393145919, now seen corresponding path program 1 times [2020-07-20 04:00:44,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:00:44,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007485815] [2020-07-20 04:00:44,375 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@623802df [2020-07-20 04:00:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:44,487 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 04:00:44,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007485815] [2020-07-20 04:00:44,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:00:44,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 04:00:44,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011020969] [2020-07-20 04:00:44,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 04:00:44,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:00:44,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 04:00:44,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 04:00:44,492 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand 6 states. [2020-07-20 04:00:44,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:00:44,702 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2020-07-20 04:00:44,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 04:00:44,703 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-07-20 04:00:44,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:00:44,707 INFO L225 Difference]: With dead ends: 62 [2020-07-20 04:00:44,707 INFO L226 Difference]: Without dead ends: 60 [2020-07-20 04:00:44,709 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 [2020-07-20 04:00:44,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-20 04:00:44,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-07-20 04:00:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 04:00:44,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 82 transitions. [2020-07-20 04:00:44,728 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 82 transitions. Word has length 21 [2020-07-20 04:00:44,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:00:44,729 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 82 transitions. [2020-07-20 04:00:44,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 04:00:44,729 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 82 transitions. [2020-07-20 04:00:44,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-20 04:00:44,731 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:00:44,731 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 04:00:44,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 04:00:44,746 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:00:44,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:00:44,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1101915893, now seen corresponding path program 1 times [2020-07-20 04:00:44,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:00:44,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343606508] [2020-07-20 04:00:44,748 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@623802df [2020-07-20 04:00:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:44,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:44,850 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 04:00:44,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343606508] [2020-07-20 04:00:44,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:00:44,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 04:00:44,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264103101] [2020-07-20 04:00:44,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 04:00:44,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:00:44,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 04:00:44,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 04:00:44,854 INFO L87 Difference]: Start difference. First operand 60 states and 82 transitions. Second operand 3 states. [2020-07-20 04:00:44,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:00:44,889 INFO L93 Difference]: Finished difference Result 89 states and 122 transitions. [2020-07-20 04:00:44,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 04:00:44,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-07-20 04:00:44,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:00:44,891 INFO L225 Difference]: With dead ends: 89 [2020-07-20 04:00:44,892 INFO L226 Difference]: Without dead ends: 60 [2020-07-20 04:00:44,893 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 04:00:44,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-20 04:00:44,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-07-20 04:00:44,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 04:00:44,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2020-07-20 04:00:44,907 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 50 [2020-07-20 04:00:44,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:00:44,907 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2020-07-20 04:00:44,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 04:00:44,908 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2020-07-20 04:00:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 04:00:44,910 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:00:44,910 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 04:00:44,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 04:00:44,910 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:00:44,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:00:44,911 INFO L82 PathProgramCache]: Analyzing trace with hash 668905142, now seen corresponding path program 1 times [2020-07-20 04:00:44,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:00:44,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862145692] [2020-07-20 04:00:44,912 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@623802df [2020-07-20 04:00:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,120 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 04:00:45,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862145692] [2020-07-20 04:00:45,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:00:45,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 04:00:45,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974107423] [2020-07-20 04:00:45,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 04:00:45,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:00:45,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 04:00:45,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 04:00:45,123 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand 6 states. [2020-07-20 04:00:45,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:00:45,284 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2020-07-20 04:00:45,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 04:00:45,285 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-07-20 04:00:45,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:00:45,287 INFO L225 Difference]: With dead ends: 67 [2020-07-20 04:00:45,287 INFO L226 Difference]: Without dead ends: 65 [2020-07-20 04:00:45,288 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 04:00:45,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-07-20 04:00:45,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-07-20 04:00:45,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-20 04:00:45,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2020-07-20 04:00:45,302 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 51 [2020-07-20 04:00:45,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:00:45,303 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2020-07-20 04:00:45,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 04:00:45,303 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2020-07-20 04:00:45,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-20 04:00:45,306 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:00:45,307 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 04:00:45,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 04:00:45,307 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:00:45,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:00:45,308 INFO L82 PathProgramCache]: Analyzing trace with hash -702087769, now seen corresponding path program 1 times [2020-07-20 04:00:45,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:00:45,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636711532] [2020-07-20 04:00:45,308 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@623802df [2020-07-20 04:00:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,470 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 04:00:45,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636711532] [2020-07-20 04:00:45,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:00:45,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 04:00:45,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37335236] [2020-07-20 04:00:45,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 04:00:45,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:00:45,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 04:00:45,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 04:00:45,474 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand 7 states. [2020-07-20 04:00:45,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:00:45,592 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2020-07-20 04:00:45,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 04:00:45,593 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-07-20 04:00:45,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:00:45,595 INFO L225 Difference]: With dead ends: 83 [2020-07-20 04:00:45,596 INFO L226 Difference]: Without dead ends: 81 [2020-07-20 04:00:45,596 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 04:00:45,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-20 04:00:45,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2020-07-20 04:00:45,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-20 04:00:45,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 97 transitions. [2020-07-20 04:00:45,613 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 97 transitions. Word has length 86 [2020-07-20 04:00:45,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:00:45,614 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 97 transitions. [2020-07-20 04:00:45,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 04:00:45,614 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 97 transitions. [2020-07-20 04:00:45,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-07-20 04:00:45,616 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:00:45,617 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 04:00:45,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 04:00:45,617 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:00:45,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:00:45,618 INFO L82 PathProgramCache]: Analyzing trace with hash 58209754, now seen corresponding path program 1 times [2020-07-20 04:00:45,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:00:45,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967555519] [2020-07-20 04:00:45,619 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@623802df [2020-07-20 04:00:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:45,785 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 04:00:45,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967555519] [2020-07-20 04:00:45,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:00:45,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 04:00:45,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836964518] [2020-07-20 04:00:45,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 04:00:45,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:00:45,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 04:00:45,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 04:00:45,790 INFO L87 Difference]: Start difference. First operand 75 states and 97 transitions. Second operand 6 states. [2020-07-20 04:00:45,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:00:45,918 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2020-07-20 04:00:45,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 04:00:45,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-07-20 04:00:45,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:00:45,921 INFO L225 Difference]: With dead ends: 81 [2020-07-20 04:00:45,924 INFO L226 Difference]: Without dead ends: 79 [2020-07-20 04:00:45,925 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 04:00:45,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-07-20 04:00:45,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-07-20 04:00:45,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-20 04:00:45,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2020-07-20 04:00:45,946 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 91 [2020-07-20 04:00:45,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:00:45,947 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2020-07-20 04:00:45,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 04:00:45,947 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2020-07-20 04:00:45,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-07-20 04:00:45,952 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:00:45,952 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 04:00:45,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 04:00:45,953 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:00:45,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:00:45,956 INFO L82 PathProgramCache]: Analyzing trace with hash 299780712, now seen corresponding path program 1 times [2020-07-20 04:00:45,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:00:45,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907506189] [2020-07-20 04:00:45,957 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@623802df [2020-07-20 04:00:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:00:46,159 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 04:00:46,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907506189] [2020-07-20 04:00:46,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:00:46,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 04:00:46,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980531344] [2020-07-20 04:00:46,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 04:00:46,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:00:46,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 04:00:46,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 04:00:46,166 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand 6 states. [2020-07-20 04:00:46,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:00:46,276 INFO L93 Difference]: Finished difference Result 82 states and 103 transitions. [2020-07-20 04:00:46,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 04:00:46,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-07-20 04:00:46,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:00:46,280 INFO L225 Difference]: With dead ends: 82 [2020-07-20 04:00:46,280 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 04:00:46,284 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 04:00:46,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 04:00:46,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 04:00:46,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 04:00:46,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 04:00:46,289 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 120 [2020-07-20 04:00:46,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:00:46,289 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 04:00:46,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 04:00:46,290 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 04:00:46,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 04:00:46,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 04:00:46,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 04:00:46,871 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 04:00:46,871 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 04:00:46,871 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 04:00:46,871 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 04:00:46,872 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 04:00:46,873 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 04:00:46,873 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 04:00:46,873 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 04:00:46,873 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 04:00:46,874 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 04:00:46,875 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 04:00:46,875 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 04:00:46,876 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 72) no Hoare annotation was computed. [2020-07-20 04:00:46,876 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 04:00:46,876 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 04:00:46,876 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 04:00:46,877 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 04:00:46,877 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 04:00:46,877 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 04:00:46,881 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 04:00:46,882 INFO L271 CegarLoopResult]: At program point L70(lines 14 72) the Hoare annotation is: true [2020-07-20 04:00:46,882 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-20 04:00:46,882 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 04:00:46,882 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-07-20 04:00:46,883 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 04:00:46,883 INFO L268 CegarLoopResult]: For program point L46(lines 33 69) no Hoare annotation was computed. [2020-07-20 04:00:46,883 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 72) no Hoare annotation was computed. [2020-07-20 04:00:46,890 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 04:00:46,892 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 04:00:46,892 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 72) the Hoare annotation is: true [2020-07-20 04:00:46,892 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-20 04:00:46,892 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-07-20 04:00:46,893 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 04:00:46,893 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 04:00:46,893 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 04:00:46,893 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-07-20 04:00:46,894 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 04:00:46,894 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-07-20 04:00:46,894 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-07-20 04:00:46,894 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-07-20 04:00:46,894 INFO L268 CegarLoopResult]: For program point L24-1(lines 14 72) no Hoare annotation was computed. [2020-07-20 04:00:46,894 INFO L268 CegarLoopResult]: For program point L33(lines 33 69) no Hoare annotation was computed. [2020-07-20 04:00:46,894 INFO L268 CegarLoopResult]: For program point L58(lines 58 64) no Hoare annotation was computed. [2020-07-20 04:00:46,895 INFO L268 CegarLoopResult]: For program point L25(lines 14 72) no Hoare annotation was computed. [2020-07-20 04:00:46,895 INFO L268 CegarLoopResult]: For program point L58-1(lines 58 64) no Hoare annotation was computed. [2020-07-20 04:00:46,895 INFO L268 CegarLoopResult]: For program point L50(lines 50 68) no Hoare annotation was computed. [2020-07-20 04:00:46,895 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 04:00:46,895 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 04:00:46,895 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 04:00:46,896 INFO L268 CegarLoopResult]: For program point L26(lines 14 72) no Hoare annotation was computed. [2020-07-20 04:00:46,896 INFO L268 CegarLoopResult]: For program point L43(lines 33 69) no Hoare annotation was computed. [2020-07-20 04:00:46,896 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-20 04:00:46,896 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-20 04:00:46,896 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-20 04:00:46,896 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-20 04:00:46,896 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-20 04:00:46,897 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-20 04:00:46,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:00:46 BoogieIcfgContainer [2020-07-20 04:00:46,935 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 04:00:46,940 INFO L168 Benchmark]: Toolchain (without parser) took 4090.56 ms. Allocated memory was 139.5 MB in the beginning and 245.4 MB in the end (delta: 105.9 MB). Free memory was 103.9 MB in the beginning and 202.4 MB in the end (delta: -98.5 MB). Peak memory consumption was 110.6 MB. Max. memory is 7.1 GB. [2020-07-20 04:00:46,947 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 04:00:46,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.26 ms. Allocated memory is still 139.5 MB. Free memory was 103.7 MB in the beginning and 92.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-20 04:00:46,949 INFO L168 Benchmark]: Boogie Preprocessor took 121.67 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 92.8 MB in the beginning and 181.2 MB in the end (delta: -88.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-07-20 04:00:46,950 INFO L168 Benchmark]: RCFGBuilder took 381.90 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 162.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-07-20 04:00:46,951 INFO L168 Benchmark]: TraceAbstraction took 3288.43 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 162.3 MB in the beginning and 202.4 MB in the end (delta: -40.0 MB). Peak memory consumption was 105.1 MB. Max. memory is 7.1 GB. [2020-07-20 04:00:46,966 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 291.26 ms. Allocated memory is still 139.5 MB. Free memory was 103.7 MB in the beginning and 92.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.67 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 92.8 MB in the beginning and 181.2 MB in the end (delta: -88.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.90 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 162.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3288.43 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 162.3 MB in the beginning and 202.4 MB in the end (delta: -40.0 MB). Peak memory consumption was 105.1 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: 2.5s, OverallIterations: 7, TraceHistogramMax: 19, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 461 SDtfs, 100 SDslu, 1249 SDs, 0 SdLazy, 396 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s 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, 0.1s SatisfiabilityAnalysisTime, 0.8s 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...