/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/psyco/psyco_security.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:34:10,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:34:10,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:34:10,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-21 01:34:10,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:34:10,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:34:10,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:34:10,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:34:10,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:34:10,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:34:10,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:34:10,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:34:10,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:34:10,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:34:10,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:34:10,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:34:10,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:34:10,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:34:10,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:34:10,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:34:10,616 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 01:34:10,657 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:34:10,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:34:10,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:34:10,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:34:10,659 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:34:10,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:34:10,659 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:34:10,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:34:10,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:34:10,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:34:10,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:34:10,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:34:10,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:34:10,664 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:34:10,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:34:10,664 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:34:10,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:34:10,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:34:10,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:34:10,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:34:10,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:34:10,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:34:10,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:34:10,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:34:10,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:34:10,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:34:10,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:34:10,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:34:10,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:34:10,672 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 01:34:10,996 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:34:11,011 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:34:11,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:34:11,016 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:34:11,016 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:34:11,017 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_security.c [2020-07-21 01:34:11,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a6491d2/2b767dad9d24425db1780e0ef86b8fe6/FLAG0a39fbeb1 [2020-07-21 01:34:11,591 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:34:11,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_security.c [2020-07-21 01:34:11,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a6491d2/2b767dad9d24425db1780e0ef86b8fe6/FLAG0a39fbeb1 [2020-07-21 01:34:11,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a6491d2/2b767dad9d24425db1780e0ef86b8fe6 [2020-07-21 01:34:11,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:34:11,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:34:11,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:34:11,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:34:11,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:34:11,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:34:11" (1/1) ... [2020-07-21 01:34:11,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@138f3c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:34:11, skipping insertion in model container [2020-07-21 01:34:11,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:34:11" (1/1) ... [2020-07-21 01:34:11,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:34:12,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:34:12,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:34:12,289 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:34:12,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:34:12,443 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:34:12,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:34:12 WrapperNode [2020-07-21 01:34:12,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:34:12,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:34:12,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:34:12,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:34:12,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:34:12" (1/1) ... [2020-07-21 01:34:12,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:34:12" (1/1) ... [2020-07-21 01:34:12,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:34:12" (1/1) ... [2020-07-21 01:34:12,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:34:12" (1/1) ... [2020-07-21 01:34:12,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:34:12" (1/1) ... [2020-07-21 01:34:12,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:34:12" (1/1) ... [2020-07-21 01:34:12,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:34:12" (1/1) ... [2020-07-21 01:34:12,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:34:12,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:34:12,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:34:12,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:34:12,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:34:12" (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 01:34:12,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:34:12,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:34:12,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:34:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:34:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:34:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:34:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:34:12,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:34:13,124 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:34:13,124 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-07-21 01:34:13,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:34:13 BoogieIcfgContainer [2020-07-21 01:34:13,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:34:13,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:34:13,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:34:13,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:34:13,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:34:11" (1/3) ... [2020-07-21 01:34:13,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea821a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:34:13, skipping insertion in model container [2020-07-21 01:34:13,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:34:12" (2/3) ... [2020-07-21 01:34:13,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea821a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:34:13, skipping insertion in model container [2020-07-21 01:34:13,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:34:13" (3/3) ... [2020-07-21 01:34:13,139 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2020-07-21 01:34:13,152 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:34:13,161 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:34:13,177 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:34:13,205 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:34:13,205 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:34:13,206 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:34:13,206 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:34:13,206 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:34:13,206 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:34:13,207 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:34:13,207 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:34:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-07-21 01:34:13,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 01:34:13,242 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:34:13,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:34:13,243 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:34:13,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:34:13,252 INFO L82 PathProgramCache]: Analyzing trace with hash -105811556, now seen corresponding path program 1 times [2020-07-21 01:34:13,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:34:13,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126559160] [2020-07-21 01:34:13,264 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 01:34:13,364 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:34:13,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:34:13,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 01:34:13,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:34:13,404 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 01:34:13,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:34:13,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126559160] [2020-07-21 01:34:13,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:34:13,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 01:34:13,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228795941] [2020-07-21 01:34:13,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 01:34:13,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:34:13,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 01:34:13,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 01:34:13,435 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 2 states. [2020-07-21 01:34:13,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:34:13,482 INFO L93 Difference]: Finished difference Result 160 states and 298 transitions. [2020-07-21 01:34:13,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 01:34:13,484 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-21 01:34:13,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:34:13,497 INFO L225 Difference]: With dead ends: 160 [2020-07-21 01:34:13,497 INFO L226 Difference]: Without dead ends: 78 [2020-07-21 01:34:13,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 01:34:13,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-21 01:34:13,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-07-21 01:34:13,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-21 01:34:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 113 transitions. [2020-07-21 01:34:13,572 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 113 transitions. Word has length 13 [2020-07-21 01:34:13,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:34:13,574 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 113 transitions. [2020-07-21 01:34:13,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 01:34:13,575 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 113 transitions. [2020-07-21 01:34:13,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 01:34:13,577 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:34:13,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:34:13,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:34:13,792 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:34:13,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:34:13,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1547300989, now seen corresponding path program 1 times [2020-07-21 01:34:13,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:34:13,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802528695] [2020-07-21 01:34:13,795 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 01:34:13,849 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:34:13,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:34:13,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 01:34:13,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:34:13,872 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 01:34:13,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:34:13,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802528695] [2020-07-21 01:34:13,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:34:13,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:34:13,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615548683] [2020-07-21 01:34:13,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:34:13,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:34:13,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:34:13,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:13,877 INFO L87 Difference]: Start difference. First operand 78 states and 113 transitions. Second operand 3 states. [2020-07-21 01:34:13,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:34:13,941 INFO L93 Difference]: Finished difference Result 153 states and 224 transitions. [2020-07-21 01:34:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:34:13,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-07-21 01:34:13,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:34:13,943 INFO L225 Difference]: With dead ends: 153 [2020-07-21 01:34:13,943 INFO L226 Difference]: Without dead ends: 81 [2020-07-21 01:34:13,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:13,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-21 01:34:13,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-07-21 01:34:13,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-21 01:34:13,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 116 transitions. [2020-07-21 01:34:13,955 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 116 transitions. Word has length 14 [2020-07-21 01:34:13,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:34:13,956 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 116 transitions. [2020-07-21 01:34:13,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:34:13,956 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 116 transitions. [2020-07-21 01:34:13,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 01:34:13,957 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:34:13,957 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:34:14,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:34:14,173 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:34:14,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:34:14,174 INFO L82 PathProgramCache]: Analyzing trace with hash 555004895, now seen corresponding path program 1 times [2020-07-21 01:34:14,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:34:14,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413007450] [2020-07-21 01:34:14,176 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 01:34:14,222 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:34:14,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:34:14,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 01:34:14,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:34:14,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:34:14,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:34:14,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413007450] [2020-07-21 01:34:14,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:34:14,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:34:14,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128891002] [2020-07-21 01:34:14,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:34:14,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:34:14,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:34:14,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:14,263 INFO L87 Difference]: Start difference. First operand 81 states and 116 transitions. Second operand 3 states. [2020-07-21 01:34:14,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:34:14,330 INFO L93 Difference]: Finished difference Result 146 states and 213 transitions. [2020-07-21 01:34:14,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:34:14,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-21 01:34:14,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:34:14,332 INFO L225 Difference]: With dead ends: 146 [2020-07-21 01:34:14,332 INFO L226 Difference]: Without dead ends: 72 [2020-07-21 01:34:14,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:14,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-21 01:34:14,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-07-21 01:34:14,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-07-21 01:34:14,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 102 transitions. [2020-07-21 01:34:14,342 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 102 transitions. Word has length 19 [2020-07-21 01:34:14,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:34:14,342 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 102 transitions. [2020-07-21 01:34:14,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:34:14,343 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 102 transitions. [2020-07-21 01:34:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 01:34:14,344 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:34:14,344 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, 1] [2020-07-21 01:34:14,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:34:14,559 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:34:14,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:34:14,561 INFO L82 PathProgramCache]: Analyzing trace with hash -624681896, now seen corresponding path program 1 times [2020-07-21 01:34:14,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:34:14,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313913994] [2020-07-21 01:34:14,562 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 01:34:14,622 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:34:14,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:34:14,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 01:34:14,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:34:14,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:34:14,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:34:14,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313913994] [2020-07-21 01:34:14,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:34:14,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:34:14,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538688250] [2020-07-21 01:34:14,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:34:14,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:34:14,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:34:14,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:14,657 INFO L87 Difference]: Start difference. First operand 72 states and 102 transitions. Second operand 3 states. [2020-07-21 01:34:14,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:34:14,763 INFO L93 Difference]: Finished difference Result 192 states and 280 transitions. [2020-07-21 01:34:14,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:34:14,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-21 01:34:14,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:34:14,766 INFO L225 Difference]: With dead ends: 192 [2020-07-21 01:34:14,766 INFO L226 Difference]: Without dead ends: 122 [2020-07-21 01:34:14,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:14,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-21 01:34:14,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108. [2020-07-21 01:34:14,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-07-21 01:34:14,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 153 transitions. [2020-07-21 01:34:14,777 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 153 transitions. Word has length 22 [2020-07-21 01:34:14,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:34:14,778 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 153 transitions. [2020-07-21 01:34:14,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:34:14,778 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 153 transitions. [2020-07-21 01:34:14,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 01:34:14,779 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:34:14,779 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, 1, 1] [2020-07-21 01:34:14,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:34:14,993 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:34:14,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:34:14,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1531598883, now seen corresponding path program 1 times [2020-07-21 01:34:14,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:34:14,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49642624] [2020-07-21 01:34:14,996 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 01:34:15,030 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:34:15,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:34:15,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 01:34:15,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:34:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:34:15,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:34:15,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49642624] [2020-07-21 01:34:15,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:34:15,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:34:15,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834897182] [2020-07-21 01:34:15,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:34:15,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:34:15,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:34:15,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:15,050 INFO L87 Difference]: Start difference. First operand 108 states and 153 transitions. Second operand 3 states. [2020-07-21 01:34:15,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:34:15,103 INFO L93 Difference]: Finished difference Result 183 states and 260 transitions. [2020-07-21 01:34:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:34:15,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-21 01:34:15,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:34:15,105 INFO L225 Difference]: With dead ends: 183 [2020-07-21 01:34:15,105 INFO L226 Difference]: Without dead ends: 87 [2020-07-21 01:34:15,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:15,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-07-21 01:34:15,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-07-21 01:34:15,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-21 01:34:15,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2020-07-21 01:34:15,115 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 23 [2020-07-21 01:34:15,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:34:15,115 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2020-07-21 01:34:15,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:34:15,116 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2020-07-21 01:34:15,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-21 01:34:15,117 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:34:15,117 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:34:15,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:34:15,331 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:34:15,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:34:15,332 INFO L82 PathProgramCache]: Analyzing trace with hash -576284788, now seen corresponding path program 1 times [2020-07-21 01:34:15,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:34:15,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355757055] [2020-07-21 01:34:15,335 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 01:34:15,375 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:34:15,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:34:15,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 01:34:15,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:34:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 01:34:15,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:34:15,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355757055] [2020-07-21 01:34:15,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:34:15,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:34:15,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566845056] [2020-07-21 01:34:15,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:34:15,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:34:15,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:34:15,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:15,396 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand 3 states. [2020-07-21 01:34:15,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:34:15,452 INFO L93 Difference]: Finished difference Result 134 states and 190 transitions. [2020-07-21 01:34:15,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:34:15,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-07-21 01:34:15,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:34:15,454 INFO L225 Difference]: With dead ends: 134 [2020-07-21 01:34:15,454 INFO L226 Difference]: Without dead ends: 70 [2020-07-21 01:34:15,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:15,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-21 01:34:15,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-07-21 01:34:15,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-21 01:34:15,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2020-07-21 01:34:15,462 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 29 [2020-07-21 01:34:15,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:34:15,462 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2020-07-21 01:34:15,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:34:15,462 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2020-07-21 01:34:15,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 01:34:15,464 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:34:15,464 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-07-21 01:34:15,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:34:15,680 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:34:15,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:34:15,680 INFO L82 PathProgramCache]: Analyzing trace with hash -31288535, now seen corresponding path program 1 times [2020-07-21 01:34:15,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:34:15,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435308636] [2020-07-21 01:34:15,682 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 01:34:15,732 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:34:15,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:34:15,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 01:34:15,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:34:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 01:34:15,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:34:15,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435308636] [2020-07-21 01:34:15,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:34:15,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:34:15,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400430962] [2020-07-21 01:34:15,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:34:15,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:34:15,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:34:15,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:15,747 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand 3 states. [2020-07-21 01:34:15,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:34:15,832 INFO L93 Difference]: Finished difference Result 158 states and 228 transitions. [2020-07-21 01:34:15,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:34:15,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-07-21 01:34:15,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:34:15,835 INFO L225 Difference]: With dead ends: 158 [2020-07-21 01:34:15,835 INFO L226 Difference]: Without dead ends: 111 [2020-07-21 01:34:15,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:15,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-07-21 01:34:15,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-07-21 01:34:15,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-07-21 01:34:15,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 138 transitions. [2020-07-21 01:34:15,857 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 138 transitions. Word has length 30 [2020-07-21 01:34:15,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:34:15,862 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 138 transitions. [2020-07-21 01:34:15,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:34:15,862 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 138 transitions. [2020-07-21 01:34:15,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 01:34:15,864 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:34:15,864 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-07-21 01:34:16,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:34:16,082 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:34:16,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:34:16,083 INFO L82 PathProgramCache]: Analyzing trace with hash 180888733, now seen corresponding path program 1 times [2020-07-21 01:34:16,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:34:16,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379905710] [2020-07-21 01:34:16,085 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:34:16,120 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:34:16,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:34:16,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 01:34:16,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:34:16,139 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 01:34:16,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:34:16,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379905710] [2020-07-21 01:34:16,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:34:16,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:34:16,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629097392] [2020-07-21 01:34:16,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:34:16,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:34:16,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:34:16,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:16,141 INFO L87 Difference]: Start difference. First operand 99 states and 138 transitions. Second operand 3 states. [2020-07-21 01:34:16,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:34:16,201 INFO L93 Difference]: Finished difference Result 166 states and 232 transitions. [2020-07-21 01:34:16,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:34:16,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-07-21 01:34:16,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:34:16,204 INFO L225 Difference]: With dead ends: 166 [2020-07-21 01:34:16,204 INFO L226 Difference]: Without dead ends: 92 [2020-07-21 01:34:16,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-21 01:34:16,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-07-21 01:34:16,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-07-21 01:34:16,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 120 transitions. [2020-07-21 01:34:16,223 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 120 transitions. Word has length 31 [2020-07-21 01:34:16,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:34:16,223 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 120 transitions. [2020-07-21 01:34:16,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:34:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 120 transitions. [2020-07-21 01:34:16,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 01:34:16,225 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:34:16,225 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-07-21 01:34:16,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:34:16,437 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:34:16,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:34:16,438 INFO L82 PathProgramCache]: Analyzing trace with hash 317242888, now seen corresponding path program 1 times [2020-07-21 01:34:16,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:34:16,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689838582] [2020-07-21 01:34:16,440 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:34:16,474 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:34:16,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:34:16,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 01:34:16,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:34:16,493 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 01:34:16,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:34:16,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689838582] [2020-07-21 01:34:16,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:34:16,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:34:16,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313929164] [2020-07-21 01:34:16,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:34:16,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:34:16,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:34:16,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:16,497 INFO L87 Difference]: Start difference. First operand 92 states and 120 transitions. Second operand 3 states. [2020-07-21 01:34:16,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:34:16,546 INFO L93 Difference]: Finished difference Result 139 states and 184 transitions. [2020-07-21 01:34:16,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:34:16,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-07-21 01:34:16,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:34:16,548 INFO L225 Difference]: With dead ends: 139 [2020-07-21 01:34:16,548 INFO L226 Difference]: Without dead ends: 72 [2020-07-21 01:34:16,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:16,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-21 01:34:16,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-07-21 01:34:16,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-07-21 01:34:16,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2020-07-21 01:34:16,555 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 31 [2020-07-21 01:34:16,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:34:16,555 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2020-07-21 01:34:16,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:34:16,555 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2020-07-21 01:34:16,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-21 01:34:16,556 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:34:16,557 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-07-21 01:34:16,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:34:16,765 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:34:16,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:34:16,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1695196396, now seen corresponding path program 1 times [2020-07-21 01:34:16,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:34:16,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637377272] [2020-07-21 01:34:16,767 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:34:16,806 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:34:16,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:34:16,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 01:34:16,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:34:16,830 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 01:34:16,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:34:16,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637377272] [2020-07-21 01:34:16,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:34:16,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:34:16,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911746144] [2020-07-21 01:34:16,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:34:16,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:34:16,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:34:16,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:16,834 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand 3 states. [2020-07-21 01:34:16,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:34:16,915 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2020-07-21 01:34:16,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:34:16,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-07-21 01:34:16,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:34:16,916 INFO L225 Difference]: With dead ends: 74 [2020-07-21 01:34:16,917 INFO L226 Difference]: Without dead ends: 70 [2020-07-21 01:34:16,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:16,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-21 01:34:16,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-07-21 01:34:16,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-21 01:34:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2020-07-21 01:34:16,922 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 32 [2020-07-21 01:34:16,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:34:16,923 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2020-07-21 01:34:16,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:34:16,923 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2020-07-21 01:34:16,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-21 01:34:16,924 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:34:16,924 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-07-21 01:34:17,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:34:17,138 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:34:17,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:34:17,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1000030502, now seen corresponding path program 1 times [2020-07-21 01:34:17,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:34:17,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712753920] [2020-07-21 01:34:17,140 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:34:17,190 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:34:17,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:34:17,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 01:34:17,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:34:17,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 01:34:17,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:34:17,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712753920] [2020-07-21 01:34:17,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:34:17,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:34:17,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288302895] [2020-07-21 01:34:17,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:34:17,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:34:17,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:34:17,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:17,226 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand 3 states. [2020-07-21 01:34:17,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:34:17,258 INFO L93 Difference]: Finished difference Result 111 states and 143 transitions. [2020-07-21 01:34:17,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:34:17,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-07-21 01:34:17,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:34:17,259 INFO L225 Difference]: With dead ends: 111 [2020-07-21 01:34:17,259 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:34:17,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:34:17,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:34:17,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:34:17,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:34:17,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:34:17,261 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-07-21 01:34:17,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:34:17,262 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:34:17,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:34:17,262 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:34:17,262 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:34:17,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:34:17,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:34:17,624 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:34:17,625 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:34:17,625 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:34:17,625 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:34:17,625 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 01:34:17,625 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:34:17,625 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:34:17,625 INFO L268 CegarLoopResult]: For program point L316(lines 316 331) no Hoare annotation was computed. [2020-07-21 01:34:17,625 INFO L268 CegarLoopResult]: For program point L283(lines 283 382) no Hoare annotation was computed. [2020-07-21 01:34:17,625 INFO L268 CegarLoopResult]: For program point L250(lines 250 261) no Hoare annotation was computed. [2020-07-21 01:34:17,625 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 390) no Hoare annotation was computed. [2020-07-21 01:34:17,626 INFO L268 CegarLoopResult]: For program point L184(lines 184 199) no Hoare annotation was computed. [2020-07-21 01:34:17,626 INFO L268 CegarLoopResult]: For program point L118(lines 118 129) no Hoare annotation was computed. [2020-07-21 01:34:17,626 INFO L268 CegarLoopResult]: For program point L366(lines 366 377) no Hoare annotation was computed. [2020-07-21 01:34:17,626 INFO L268 CegarLoopResult]: For program point L300(lines 300 315) no Hoare annotation was computed. [2020-07-21 01:34:17,626 INFO L268 CegarLoopResult]: For program point L234(lines 234 245) no Hoare annotation was computed. [2020-07-21 01:34:17,626 INFO L268 CegarLoopResult]: For program point L102(lines 102 113) no Hoare annotation was computed. [2020-07-21 01:34:17,626 INFO L268 CegarLoopResult]: For program point L350(lines 350 361) no Hoare annotation was computed. [2020-07-21 01:34:17,626 INFO L268 CegarLoopResult]: For program point L284(lines 284 299) no Hoare annotation was computed. [2020-07-21 01:34:17,626 INFO L268 CegarLoopResult]: For program point L218(lines 218 229) no Hoare annotation was computed. [2020-07-21 01:34:17,626 INFO L268 CegarLoopResult]: For program point L86(lines 86 88) no Hoare annotation was computed. [2020-07-21 01:34:17,626 INFO L268 CegarLoopResult]: For program point L334(lines 334 345) no Hoare annotation was computed. [2020-07-21 01:34:17,626 INFO L268 CegarLoopResult]: For program point L202(lines 202 213) no Hoare annotation was computed. [2020-07-21 01:34:17,627 INFO L268 CegarLoopResult]: For program point L70(lines 70 72) no Hoare annotation was computed. [2020-07-21 01:34:17,627 INFO L268 CegarLoopResult]: For program point L318(lines 318 329) no Hoare annotation was computed. [2020-07-21 01:34:17,627 INFO L268 CegarLoopResult]: For program point L186(lines 186 197) no Hoare annotation was computed. [2020-07-21 01:34:17,627 INFO L268 CegarLoopResult]: For program point L54(lines 54 56) no Hoare annotation was computed. [2020-07-21 01:34:17,627 INFO L268 CegarLoopResult]: For program point L302(lines 302 313) no Hoare annotation was computed. [2020-07-21 01:34:17,627 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 390) no Hoare annotation was computed. [2020-07-21 01:34:17,627 INFO L268 CegarLoopResult]: For program point L170(lines 170 172) no Hoare annotation was computed. [2020-07-21 01:34:17,627 INFO L268 CegarLoopResult]: For program point L286(lines 286 297) no Hoare annotation was computed. [2020-07-21 01:34:17,627 INFO L268 CegarLoopResult]: For program point L154(lines 154 156) no Hoare annotation was computed. [2020-07-21 01:34:17,628 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 385) the Hoare annotation is: (or (and (= 0 main_~q~0) (<= main_~this_state~0 0)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-07-21 01:34:17,628 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 385) no Hoare annotation was computed. [2020-07-21 01:34:17,628 INFO L268 CegarLoopResult]: For program point L270(lines 270 272) no Hoare annotation was computed. [2020-07-21 01:34:17,628 INFO L268 CegarLoopResult]: For program point L138(lines 138 140) no Hoare annotation was computed. [2020-07-21 01:34:17,628 INFO L268 CegarLoopResult]: For program point L254(lines 254 256) no Hoare annotation was computed. [2020-07-21 01:34:17,628 INFO L268 CegarLoopResult]: For program point L122(lines 122 124) no Hoare annotation was computed. [2020-07-21 01:34:17,628 INFO L268 CegarLoopResult]: For program point L370(lines 370 372) no Hoare annotation was computed. [2020-07-21 01:34:17,628 INFO L268 CegarLoopResult]: For program point L238(lines 238 240) no Hoare annotation was computed. [2020-07-21 01:34:17,628 INFO L268 CegarLoopResult]: For program point L106(lines 106 108) no Hoare annotation was computed. [2020-07-21 01:34:17,629 INFO L268 CegarLoopResult]: For program point L354(lines 354 356) no Hoare annotation was computed. [2020-07-21 01:34:17,629 INFO L268 CegarLoopResult]: For program point L222(lines 222 224) no Hoare annotation was computed. [2020-07-21 01:34:17,629 INFO L264 CegarLoopResult]: At program point L371(lines 13 390) the Hoare annotation is: false [2020-07-21 01:34:17,629 INFO L268 CegarLoopResult]: For program point L338(lines 338 340) no Hoare annotation was computed. [2020-07-21 01:34:17,629 INFO L268 CegarLoopResult]: For program point L206(lines 206 208) no Hoare annotation was computed. [2020-07-21 01:34:17,629 INFO L268 CegarLoopResult]: For program point L322(lines 322 324) no Hoare annotation was computed. [2020-07-21 01:34:17,629 INFO L268 CegarLoopResult]: For program point L190(lines 190 192) no Hoare annotation was computed. [2020-07-21 01:34:17,629 INFO L268 CegarLoopResult]: For program point L306(lines 306 308) no Hoare annotation was computed. [2020-07-21 01:34:17,629 INFO L268 CegarLoopResult]: For program point L290(lines 290 292) no Hoare annotation was computed. [2020-07-21 01:34:17,630 INFO L268 CegarLoopResult]: For program point L27(lines 27 46) no Hoare annotation was computed. [2020-07-21 01:34:17,630 INFO L268 CegarLoopResult]: For program point L28(lines 28 43) no Hoare annotation was computed. [2020-07-21 01:34:17,630 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 389) no Hoare annotation was computed. [2020-07-21 01:34:17,630 INFO L268 CegarLoopResult]: For program point L30(lines 30 41) no Hoare annotation was computed. [2020-07-21 01:34:17,630 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 390) the Hoare annotation is: true [2020-07-21 01:34:17,630 INFO L268 CegarLoopResult]: For program point L80(lines 80 95) no Hoare annotation was computed. [2020-07-21 01:34:17,630 INFO L268 CegarLoopResult]: For program point L47(lines 47 98) no Hoare annotation was computed. [2020-07-21 01:34:17,630 INFO L268 CegarLoopResult]: For program point L64(lines 64 79) no Hoare annotation was computed. [2020-07-21 01:34:17,630 INFO L268 CegarLoopResult]: For program point L48(lines 48 63) no Hoare annotation was computed. [2020-07-21 01:34:17,630 INFO L268 CegarLoopResult]: For program point L164(lines 164 179) no Hoare annotation was computed. [2020-07-21 01:34:17,631 INFO L268 CegarLoopResult]: For program point L148(lines 148 163) no Hoare annotation was computed. [2020-07-21 01:34:17,631 INFO L268 CegarLoopResult]: For program point L82(lines 82 93) no Hoare annotation was computed. [2020-07-21 01:34:17,631 INFO L268 CegarLoopResult]: For program point L264(lines 264 279) no Hoare annotation was computed. [2020-07-21 01:34:17,631 INFO L268 CegarLoopResult]: For program point L132(lines 132 147) no Hoare annotation was computed. [2020-07-21 01:34:17,631 INFO L268 CegarLoopResult]: For program point L99(lines 99 182) no Hoare annotation was computed. [2020-07-21 01:34:17,631 INFO L268 CegarLoopResult]: For program point L66(lines 66 77) no Hoare annotation was computed. [2020-07-21 01:34:17,631 INFO L268 CegarLoopResult]: For program point L248(lines 248 263) no Hoare annotation was computed. [2020-07-21 01:34:17,631 INFO L268 CegarLoopResult]: For program point L116(lines 116 131) no Hoare annotation was computed. [2020-07-21 01:34:17,632 INFO L268 CegarLoopResult]: For program point L50(lines 50 61) no Hoare annotation was computed. [2020-07-21 01:34:17,632 INFO L268 CegarLoopResult]: For program point L364(lines 364 379) no Hoare annotation was computed. [2020-07-21 01:34:17,632 INFO L268 CegarLoopResult]: For program point L232(lines 232 247) no Hoare annotation was computed. [2020-07-21 01:34:17,632 INFO L268 CegarLoopResult]: For program point L166(lines 166 177) no Hoare annotation was computed. [2020-07-21 01:34:17,632 INFO L268 CegarLoopResult]: For program point L100(lines 100 115) no Hoare annotation was computed. [2020-07-21 01:34:17,632 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-07-21 01:34:17,632 INFO L264 CegarLoopResult]: At program point L381(lines 22 385) the Hoare annotation is: (let ((.cse0 (<= main_~this_state~0 0))) (or (and (= 0 main_~q~0) .cse0) (and (= 3 main_~q~0) (= 2 main_~this_state~0)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) (and .cse0 (= 2 main_~q~0)))) [2020-07-21 01:34:17,632 INFO L268 CegarLoopResult]: For program point L348(lines 348 363) no Hoare annotation was computed. [2020-07-21 01:34:17,633 INFO L268 CegarLoopResult]: For program point L216(lines 216 231) no Hoare annotation was computed. [2020-07-21 01:34:17,633 INFO L268 CegarLoopResult]: For program point L183(lines 183 282) no Hoare annotation was computed. [2020-07-21 01:34:17,633 INFO L268 CegarLoopResult]: For program point L150(lines 150 161) no Hoare annotation was computed. [2020-07-21 01:34:17,633 INFO L268 CegarLoopResult]: For program point L332(lines 332 347) no Hoare annotation was computed. [2020-07-21 01:34:17,633 INFO L268 CegarLoopResult]: For program point L266(lines 266 277) no Hoare annotation was computed. [2020-07-21 01:34:17,633 INFO L268 CegarLoopResult]: For program point L200(lines 200 215) no Hoare annotation was computed. [2020-07-21 01:34:17,633 INFO L268 CegarLoopResult]: For program point L134(lines 134 145) no Hoare annotation was computed. [2020-07-21 01:34:17,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:34:17 BoogieIcfgContainer [2020-07-21 01:34:17,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:34:17,653 INFO L168 Benchmark]: Toolchain (without parser) took 5695.83 ms. Allocated memory was 145.8 MB in the beginning and 245.9 MB in the end (delta: 100.1 MB). Free memory was 101.8 MB in the beginning and 177.8 MB in the end (delta: -76.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-07-21 01:34:17,654 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 01:34:17,655 INFO L168 Benchmark]: CACSL2BoogieTranslator took 484.75 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 101.3 MB in the beginning and 181.5 MB in the end (delta: -80.1 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:34:17,656 INFO L168 Benchmark]: Boogie Preprocessor took 70.13 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 179.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-21 01:34:17,657 INFO L168 Benchmark]: RCFGBuilder took 614.77 ms. Allocated memory is still 203.4 MB. Free memory was 179.5 MB in the beginning and 151.1 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-07-21 01:34:17,657 INFO L168 Benchmark]: TraceAbstraction took 4519.10 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 150.5 MB in the beginning and 177.8 MB in the end (delta: -27.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-07-21 01:34:17,662 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 145.8 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 484.75 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 101.3 MB in the beginning and 181.5 MB in the end (delta: -80.1 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.13 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 179.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 614.77 ms. Allocated memory is still 203.4 MB. Free memory was 179.5 MB in the beginning and 151.1 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4519.10 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 150.5 MB in the beginning and 177.8 MB in the end (delta: -27.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 389]: 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: 22]: Loop Invariant Derived loop invariant: (((0 == q && this_state <= 0) || (3 == q && 2 == this_state)) || (4 <= q && 3 == this_state)) || (this_state <= 0 && 2 == q) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (0 == q && this_state <= 0) || (4 <= q && 3 == this_state) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1008 SDtfs, 337 SDslu, 455 SDs, 0 SdLazy, 217 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 266 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 13 NumberOfFragments, 49 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 27 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 277 NumberOfCodeBlocks, 253 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 266 ConstructedInterpolants, 0 QuantifiedInterpolants, 10566 SizeOfPredicates, 5 NumberOfNonLiveVariables, 907 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 55/55 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...