/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 00:59:01,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 00:59:01,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 00:59:01,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-21 00:59:01,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 00:59:01,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 00:59:01,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 00:59:01,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 00:59:01,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 00:59:01,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 00:59:01,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 00:59:01,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 00:59:01,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 00:59:01,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 00:59:01,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 00:59:01,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 00:59:01,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 00:59:01,212 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 [2020-07-21 00:59:01,232 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 00:59:01,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 00:59:01,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 00:59:01,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 00:59:01,235 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 00:59:01,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 00:59:01,236 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 00:59:01,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 00:59:01,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 00:59:01,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 00:59:01,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 00:59:01,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 00:59:01,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 00:59:01,237 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 00:59:01,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 00:59:01,238 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 00:59:01,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 00:59:01,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 00:59:01,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 00:59:01,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 00:59:01,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 00:59:01,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 00:59:01,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 00:59:01,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 00:59:01,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 00:59:01,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 00:59:01,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:59:01,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 00:59:01,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 00:59:01,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC 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 [2020-07-21 00:59:01,609 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 00:59:01,625 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 00:59:01,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 00:59:01,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 00:59:01,634 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 00:59:01,635 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c [2020-07-21 00:59:01,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb6957ac4/d7260c251e5f464ca86f6f3dfe15d380/FLAG7445a3597 [2020-07-21 00:59:02,369 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 00:59:02,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c [2020-07-21 00:59:02,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb6957ac4/d7260c251e5f464ca86f6f3dfe15d380/FLAG7445a3597 [2020-07-21 00:59:02,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb6957ac4/d7260c251e5f464ca86f6f3dfe15d380 [2020-07-21 00:59:02,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 00:59:02,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 00:59:02,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 00:59:02,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 00:59:02,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 00:59:02,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:59:02" (1/1) ... [2020-07-21 00:59:02,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ec2a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:59:02, skipping insertion in model container [2020-07-21 00:59:02,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:59:02" (1/1) ... [2020-07-21 00:59:02,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 00:59:02,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 00:59:03,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:59:03,007 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 00:59:03,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:59:03,037 INFO L208 MainTranslator]: Completed translation [2020-07-21 00:59:03,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:59:03 WrapperNode [2020-07-21 00:59:03,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 00:59:03,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 00:59:03,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 00:59:03,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 00:59:03,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:59:03" (1/1) ... [2020-07-21 00:59:03,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:59:03" (1/1) ... [2020-07-21 00:59:03,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:59:03" (1/1) ... [2020-07-21 00:59:03,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:59:03" (1/1) ... [2020-07-21 00:59:03,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:59:03" (1/1) ... [2020-07-21 00:59:03,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:59:03" (1/1) ... [2020-07-21 00:59:03,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:59:03" (1/1) ... [2020-07-21 00:59:03,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 00:59:03,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 00:59:03,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 00:59:03,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 00:59:03,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:59:03" (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 [2020-07-21 00:59:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 00:59:03,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 00:59:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-07-21 00:59:03,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 00:59:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 00:59:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 00:59:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-07-21 00:59:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 00:59:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 00:59:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 00:59:03,496 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 00:59:03,497 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 00:59:03,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:59:03 BoogieIcfgContainer [2020-07-21 00:59:03,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 00:59:03,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 00:59:03,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 00:59:03,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 00:59:03,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:59:02" (1/3) ... [2020-07-21 00:59:03,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b86be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:59:03, skipping insertion in model container [2020-07-21 00:59:03,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:59:03" (2/3) ... [2020-07-21 00:59:03,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b86be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:59:03, skipping insertion in model container [2020-07-21 00:59:03,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:59:03" (3/3) ... [2020-07-21 00:59:03,513 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i5_o5-2.c [2020-07-21 00:59:03,525 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 00:59:03,534 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 00:59:03,549 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 00:59:03,575 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 00:59:03,576 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 00:59:03,576 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 00:59:03,576 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 00:59:03,576 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 00:59:03,577 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 00:59:03,577 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 00:59:03,577 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 00:59:03,599 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-21 00:59:03,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 00:59:03,609 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:59:03,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:59:03,612 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:59:03,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:59:03,619 INFO L82 PathProgramCache]: Analyzing trace with hash -872342019, now seen corresponding path program 1 times [2020-07-21 00:59:03,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:59:03,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679449766] [2020-07-21 00:59:03,631 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:59:03,785 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 00:59:03,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:59:03,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 00:59:03,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:59:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 00:59:03,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:59:03,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679449766] [2020-07-21 00:59:03,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:59:03,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 00:59:03,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956731184] [2020-07-21 00:59:03,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 00:59:03,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:59:03,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 00:59:03,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 00:59:03,973 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-07-21 00:59:04,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:59:04,092 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-07-21 00:59:04,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 00:59:04,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-21 00:59:04,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:59:04,109 INFO L225 Difference]: With dead ends: 30 [2020-07-21 00:59:04,110 INFO L226 Difference]: Without dead ends: 18 [2020-07-21 00:59:04,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 00:59:04,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-21 00:59:04,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-21 00:59:04,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-21 00:59:04,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-07-21 00:59:04,221 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-07-21 00:59:04,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:59:04,224 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-07-21 00:59:04,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 00:59:04,224 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-21 00:59:04,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 00:59:04,228 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:59:04,229 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:59:04,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:59:04,445 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:59:04,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:59:04,446 INFO L82 PathProgramCache]: Analyzing trace with hash -953570577, now seen corresponding path program 1 times [2020-07-21 00:59:04,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:59:04,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290545666] [2020-07-21 00:59:04,448 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:59:04,495 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 00:59:04,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:59:04,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 00:59:04,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:59:04,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 00:59:04,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:59:04,802 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:59:04,808 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:59:04,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 00:59:04,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290545666] [2020-07-21 00:59:04,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:59:04,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2020-07-21 00:59:04,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289575930] [2020-07-21 00:59:04,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 00:59:04,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:59:04,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 00:59:04,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-21 00:59:04,863 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 9 states. [2020-07-21 00:59:04,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:59:04,971 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-07-21 00:59:04,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 00:59:04,973 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-07-21 00:59:04,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:59:04,975 INFO L225 Difference]: With dead ends: 25 [2020-07-21 00:59:04,975 INFO L226 Difference]: Without dead ends: 21 [2020-07-21 00:59:04,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-07-21 00:59:04,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-21 00:59:04,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-21 00:59:04,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-21 00:59:04,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-07-21 00:59:04,988 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2020-07-21 00:59:04,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:59:04,989 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-07-21 00:59:04,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 00:59:04,990 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-07-21 00:59:04,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 00:59:04,991 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:59:04,992 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:59:05,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:59:05,205 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:59:05,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:59:05,207 INFO L82 PathProgramCache]: Analyzing trace with hash 397359997, now seen corresponding path program 2 times [2020-07-21 00:59:05,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:59:05,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697068791] [2020-07-21 00:59:05,208 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:59:05,247 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 00:59:05,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:59:05,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 00:59:05,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:59:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-21 00:59:05,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:59:05,670 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:59:05,672 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:59:05,730 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:59:05,732 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:59:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 00:59:05,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697068791] [2020-07-21 00:59:05,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:59:05,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2020-07-21 00:59:05,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645927797] [2020-07-21 00:59:05,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 00:59:05,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:59:05,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 00:59:05,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-07-21 00:59:05,793 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 11 states. [2020-07-21 00:59:05,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:59:05,879 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-07-21 00:59:05,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 00:59:05,880 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-07-21 00:59:05,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:59:05,882 INFO L225 Difference]: With dead ends: 28 [2020-07-21 00:59:05,882 INFO L226 Difference]: Without dead ends: 24 [2020-07-21 00:59:05,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-07-21 00:59:05,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-21 00:59:05,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-21 00:59:05,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-21 00:59:05,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-07-21 00:59:05,891 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2020-07-21 00:59:05,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:59:05,892 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-07-21 00:59:05,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 00:59:05,892 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-07-21 00:59:05,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 00:59:05,894 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:59:05,894 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:59:06,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:59:06,108 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:59:06,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:59:06,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1198310127, now seen corresponding path program 3 times [2020-07-21 00:59:06,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:59:06,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907150963] [2020-07-21 00:59:06,110 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:59:06,151 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 00:59:06,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:59:06,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 00:59:06,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:59:06,212 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-07-21 00:59:06,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:59:06,605 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:59:06,717 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:59:06,777 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:59:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 00:59:06,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907150963] [2020-07-21 00:59:06,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:59:06,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 13 [2020-07-21 00:59:06,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411727225] [2020-07-21 00:59:06,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-21 00:59:06,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:59:06,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-21 00:59:06,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-07-21 00:59:06,866 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 13 states. [2020-07-21 00:59:06,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:59:06,968 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-07-21 00:59:06,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 00:59:06,969 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-07-21 00:59:06,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:59:06,971 INFO L225 Difference]: With dead ends: 31 [2020-07-21 00:59:06,972 INFO L226 Difference]: Without dead ends: 27 [2020-07-21 00:59:06,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-07-21 00:59:06,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-21 00:59:06,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-21 00:59:06,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 00:59:06,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-07-21 00:59:06,986 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2020-07-21 00:59:06,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:59:06,988 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-07-21 00:59:06,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-21 00:59:06,988 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-07-21 00:59:06,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-21 00:59:06,990 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:59:06,990 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:59:07,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:59:07,194 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:59:07,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:59:07,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1080764669, now seen corresponding path program 4 times [2020-07-21 00:59:07,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:59:07,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136689646] [2020-07-21 00:59:07,196 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:59:07,231 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 00:59:07,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:59:07,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 00:59:07,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:59:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-07-21 00:59:07,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:59:07,895 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:59:07,896 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:59:08,064 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:59:08,065 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:59:08,178 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:59:08,179 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:59:08,222 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:59:08,224 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:59:08,283 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 00:59:08,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136689646] [2020-07-21 00:59:08,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:59:08,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 14 [2020-07-21 00:59:08,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91818743] [2020-07-21 00:59:08,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 00:59:08,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:59:08,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 00:59:08,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-07-21 00:59:08,288 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 14 states. [2020-07-21 00:59:08,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:59:08,420 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-07-21 00:59:08,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 00:59:08,423 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-07-21 00:59:08,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:59:08,428 INFO L225 Difference]: With dead ends: 34 [2020-07-21 00:59:08,428 INFO L226 Difference]: Without dead ends: 30 [2020-07-21 00:59:08,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 50 SyntacticMatches, 11 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2020-07-21 00:59:08,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-21 00:59:08,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-21 00:59:08,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-21 00:59:08,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-07-21 00:59:08,440 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2020-07-21 00:59:08,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:59:08,441 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-07-21 00:59:08,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 00:59:08,441 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-07-21 00:59:08,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-21 00:59:08,443 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:59:08,443 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:59:08,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:59:08,647 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:59:08,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:59:08,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1752970513, now seen corresponding path program 5 times [2020-07-21 00:59:08,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:59:08,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164571519] [2020-07-21 00:59:08,650 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:59:08,697 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:59:08,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:59:08,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-21 00:59:08,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:59:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-21 00:59:08,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:59:09,232 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-21 00:59:09,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164571519] [2020-07-21 00:59:09,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:59:09,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-07-21 00:59:09,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999976119] [2020-07-21 00:59:09,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-21 00:59:09,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:59:09,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-21 00:59:09,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-07-21 00:59:09,238 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 15 states. [2020-07-21 00:59:09,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:59:09,361 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-07-21 00:59:09,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-21 00:59:09,361 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-07-21 00:59:09,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:59:09,363 INFO L225 Difference]: With dead ends: 37 [2020-07-21 00:59:09,363 INFO L226 Difference]: Without dead ends: 33 [2020-07-21 00:59:09,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-07-21 00:59:09,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-21 00:59:09,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-07-21 00:59:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-21 00:59:09,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-07-21 00:59:09,383 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2020-07-21 00:59:09,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:59:09,386 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-07-21 00:59:09,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-21 00:59:09,387 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-07-21 00:59:09,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-07-21 00:59:09,392 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:59:09,392 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:59:09,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:59:09,607 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:59:09,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:59:09,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1590630787, now seen corresponding path program 6 times [2020-07-21 00:59:09,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:59:09,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136563649] [2020-07-21 00:59:09,610 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:59:09,662 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 00:59:09,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:59:09,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 00:59:09,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:59:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-07-21 00:59:09,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:59:09,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136563649] [2020-07-21 00:59:09,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:59:09,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 00:59:09,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157792466] [2020-07-21 00:59:09,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 00:59:09,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:59:09,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 00:59:09,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-07-21 00:59:09,788 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-07-21 00:59:09,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:59:09,905 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-07-21 00:59:09,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 00:59:09,906 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-07-21 00:59:09,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:59:09,907 INFO L225 Difference]: With dead ends: 33 [2020-07-21 00:59:09,907 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 00:59:09,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-07-21 00:59:09,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 00:59:09,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 00:59:09,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 00:59:09,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 00:59:09,909 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-07-21 00:59:09,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:59:09,910 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 00:59:09,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 00:59:09,910 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 00:59:09,910 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 00:59:10,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:59:10,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 00:59:10,183 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 00:59:10,184 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 00:59:10,184 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 00:59:10,184 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 00:59:10,184 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 00:59:10,185 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 00:59:10,185 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-07-21 00:59:10,185 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 15) the Hoare annotation is: true [2020-07-21 00:59:10,185 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 15) no Hoare annotation was computed. [2020-07-21 00:59:10,185 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-07-21 00:59:10,185 INFO L268 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-07-21 00:59:10,186 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (<= main_~input~0 5) (<= 5 main_~input~0)) [2020-07-21 00:59:10,186 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-07-21 00:59:10,186 INFO L268 CegarLoopResult]: For program point L12-2(lines 9 15) no Hoare annotation was computed. [2020-07-21 00:59:10,186 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-21 00:59:10,186 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-21 00:59:10,187 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 7) the Hoare annotation is: true [2020-07-21 00:59:10,187 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (and (<= |id_#in~x| id_~x) (<= id_~x |id_#in~x|)) [2020-07-21 00:59:10,187 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-21 00:59:10,187 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-07-21 00:59:10,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:59:10 BoogieIcfgContainer [2020-07-21 00:59:10,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 00:59:10,198 INFO L168 Benchmark]: Toolchain (without parser) took 7505.47 ms. Allocated memory was 137.4 MB in the beginning and 283.6 MB in the end (delta: 146.3 MB). Free memory was 100.6 MB in the beginning and 184.7 MB in the end (delta: -84.1 MB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB. [2020-07-21 00:59:10,199 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 118.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 00:59:10,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.85 ms. Allocated memory is still 137.4 MB. Free memory was 100.2 MB in the beginning and 91.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-07-21 00:59:10,201 INFO L168 Benchmark]: Boogie Preprocessor took 34.37 ms. Allocated memory is still 137.4 MB. Free memory was 91.1 MB in the beginning and 89.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-21 00:59:10,202 INFO L168 Benchmark]: RCFGBuilder took 428.56 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 89.7 MB in the beginning and 171.1 MB in the end (delta: -81.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-21 00:59:10,203 INFO L168 Benchmark]: TraceAbstraction took 6690.82 ms. Allocated memory was 202.4 MB in the beginning and 283.6 MB in the end (delta: 81.3 MB). Free memory was 170.4 MB in the beginning and 184.7 MB in the end (delta: -14.3 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB. [2020-07-21 00:59:10,207 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 118.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 341.85 ms. Allocated memory is still 137.4 MB. Free memory was 100.2 MB in the beginning and 91.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.37 ms. Allocated memory is still 137.4 MB. Free memory was 91.1 MB in the beginning and 89.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 428.56 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 89.7 MB in the beginning and 171.1 MB in the end (delta: -81.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6690.82 ms. Allocated memory was 202.4 MB in the beginning and 283.6 MB in the end (delta: 81.3 MB). Free memory was 170.4 MB in the beginning and 184.7 MB in the end (delta: -14.3 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.5s, OverallIterations: 7, TraceHistogramMax: 7, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 115 SDtfs, 132 SDslu, 603 SDs, 0 SdLazy, 298 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 387 GetRequests, 272 SyntacticMatches, 29 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 19 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 217 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 360 ConstructedInterpolants, 0 QuantifiedInterpolants, 29280 SizeOfPredicates, 28 NumberOfNonLiveVariables, 368 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 264/474 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...