/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:57:51,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:57:51,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:57:51,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:57:51,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:57:51,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:57:51,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:57:51,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:57:51,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:57:51,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:57:51,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:57:51,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:57:51,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:57:51,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:57:51,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:57:51,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:57:51,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:57:51,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:57:51,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:57:51,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:57:51,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:57:51,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:57:51,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:57:51,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:57:51,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 14:57:51,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:57:51,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:57:51,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:57:51,323 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 14:57:51,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:57:51,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:57:51,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:57:51,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:57:51,351 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:57:51,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:57:51,351 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:57:51,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:57:51,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:57:51,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:57:51,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:57:51,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:57:51,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:57:51,353 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:57:51,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:57:51,353 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:57:51,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:57:51,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:57:51,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:57:51,354 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:57:51,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:57:51,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:57:51,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:57:51,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:57:51,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:57:51,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:57:51,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:57:51,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:57:51,356 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:57:51,356 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 -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:57:51,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:57:51,855 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:57:51,860 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:57:51,861 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:57:51,862 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:57:51,863 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_11.c [2020-09-24 14:57:51,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7447218cc/badeaef4affd4972a9eb7a68a72e07a9/FLAGf5b95ab4a [2020-09-24 14:57:52,529 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:57:52,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_11.c [2020-09-24 14:57:52,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7447218cc/badeaef4affd4972a9eb7a68a72e07a9/FLAGf5b95ab4a [2020-09-24 14:57:52,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7447218cc/badeaef4affd4972a9eb7a68a72e07a9 [2020-09-24 14:57:52,886 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:57:52,892 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:57:52,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:57:52,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:57:52,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:57:52,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:52" (1/1) ... [2020-09-24 14:57:52,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0614b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:52, skipping insertion in model container [2020-09-24 14:57:52,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:52" (1/1) ... [2020-09-24 14:57:52,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:57:52,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:57:53,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:57:53,199 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:57:53,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:57:53,245 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:57:53,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53 WrapperNode [2020-09-24 14:57:53,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:57:53,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:57:53,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:57:53,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:57:53,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53" (1/1) ... [2020-09-24 14:57:53,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53" (1/1) ... [2020-09-24 14:57:53,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53" (1/1) ... [2020-09-24 14:57:53,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53" (1/1) ... [2020-09-24 14:57:53,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53" (1/1) ... [2020-09-24 14:57:53,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53" (1/1) ... [2020-09-24 14:57:53,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53" (1/1) ... [2020-09-24 14:57:53,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:57:53,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:57:53,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:57:53,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:57:53,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-24 14:57:53,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:57:53,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:57:53,482 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:57:53,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:57:53,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:57:53,482 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:57:53,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:57:53,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:57:53,971 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:57:53,972 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 14:57:53,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:53 BoogieIcfgContainer [2020-09-24 14:57:53,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:57:53,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:57:53,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:57:53,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:57:53,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:57:52" (1/3) ... [2020-09-24 14:57:53,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75de466b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:53, skipping insertion in model container [2020-09-24 14:57:53,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53" (2/3) ... [2020-09-24 14:57:53,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75de466b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:53, skipping insertion in model container [2020-09-24 14:57:53,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:53" (3/3) ... [2020-09-24 14:57:53,989 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2020-09-24 14:57:54,002 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:57:54,013 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:57:54,037 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:57:54,068 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:57:54,068 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:57:54,068 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:57:54,068 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:57:54,068 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:57:54,068 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:57:54,069 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:57:54,069 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:57:54,094 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-09-24 14:57:54,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 14:57:54,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:54,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:54,107 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:54,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:54,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1546178992, now seen corresponding path program 1 times [2020-09-24 14:57:54,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:54,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533974132] [2020-09-24 14:57:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:54,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533974132] [2020-09-24 14:57:54,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:54,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:54,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583068288] [2020-09-24 14:57:54,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:54,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:54,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:54,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:54,449 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2020-09-24 14:57:54,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:54,533 INFO L93 Difference]: Finished difference Result 279 states and 384 transitions. [2020-09-24 14:57:54,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:54,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-09-24 14:57:54,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:54,555 INFO L225 Difference]: With dead ends: 279 [2020-09-24 14:57:54,555 INFO L226 Difference]: Without dead ends: 192 [2020-09-24 14:57:54,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:54,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-09-24 14:57:54,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2020-09-24 14:57:54,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-24 14:57:54,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 252 transitions. [2020-09-24 14:57:54,637 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 252 transitions. Word has length 79 [2020-09-24 14:57:54,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:54,639 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 252 transitions. [2020-09-24 14:57:54,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:54,639 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 252 transitions. [2020-09-24 14:57:54,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 14:57:54,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:54,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:54,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:57:54,649 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:54,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:54,650 INFO L82 PathProgramCache]: Analyzing trace with hash 687152074, now seen corresponding path program 1 times [2020-09-24 14:57:54,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:54,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869456360] [2020-09-24 14:57:54,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:54,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869456360] [2020-09-24 14:57:54,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:54,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:54,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60446509] [2020-09-24 14:57:54,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:54,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:54,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:54,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:54,857 INFO L87 Difference]: Start difference. First operand 190 states and 252 transitions. Second operand 3 states. [2020-09-24 14:57:54,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:54,918 INFO L93 Difference]: Finished difference Result 466 states and 650 transitions. [2020-09-24 14:57:54,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:54,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-09-24 14:57:54,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:54,923 INFO L225 Difference]: With dead ends: 466 [2020-09-24 14:57:54,923 INFO L226 Difference]: Without dead ends: 325 [2020-09-24 14:57:54,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:54,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-09-24 14:57:54,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2020-09-24 14:57:54,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-24 14:57:54,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 442 transitions. [2020-09-24 14:57:54,953 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 442 transitions. Word has length 80 [2020-09-24 14:57:54,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:54,954 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 442 transitions. [2020-09-24 14:57:54,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:54,954 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 442 transitions. [2020-09-24 14:57:54,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 14:57:54,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:54,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:54,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:57:54,957 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:54,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:54,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1261830773, now seen corresponding path program 1 times [2020-09-24 14:57:54,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:54,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101463674] [2020-09-24 14:57:54,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:55,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101463674] [2020-09-24 14:57:55,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:55,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:55,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117696304] [2020-09-24 14:57:55,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:55,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:55,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:55,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,064 INFO L87 Difference]: Start difference. First operand 323 states and 442 transitions. Second operand 3 states. [2020-09-24 14:57:55,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:55,088 INFO L93 Difference]: Finished difference Result 397 states and 552 transitions. [2020-09-24 14:57:55,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:55,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-09-24 14:57:55,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:55,092 INFO L225 Difference]: With dead ends: 397 [2020-09-24 14:57:55,093 INFO L226 Difference]: Without dead ends: 395 [2020-09-24 14:57:55,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-09-24 14:57:55,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 323. [2020-09-24 14:57:55,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-24 14:57:55,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 440 transitions. [2020-09-24 14:57:55,116 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 440 transitions. Word has length 80 [2020-09-24 14:57:55,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:55,117 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 440 transitions. [2020-09-24 14:57:55,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:55,117 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 440 transitions. [2020-09-24 14:57:55,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-24 14:57:55,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:55,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:55,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:57:55,120 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:55,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:55,120 INFO L82 PathProgramCache]: Analyzing trace with hash 397182858, now seen corresponding path program 1 times [2020-09-24 14:57:55,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:55,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560066323] [2020-09-24 14:57:55,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:55,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560066323] [2020-09-24 14:57:55,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:55,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:55,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999335675] [2020-09-24 14:57:55,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:55,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:55,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:55,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,204 INFO L87 Difference]: Start difference. First operand 323 states and 440 transitions. Second operand 3 states. [2020-09-24 14:57:55,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:55,223 INFO L93 Difference]: Finished difference Result 395 states and 546 transitions. [2020-09-24 14:57:55,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:55,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-09-24 14:57:55,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:55,227 INFO L225 Difference]: With dead ends: 395 [2020-09-24 14:57:55,227 INFO L226 Difference]: Without dead ends: 393 [2020-09-24 14:57:55,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-09-24 14:57:55,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 323. [2020-09-24 14:57:55,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-09-24 14:57:55,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 438 transitions. [2020-09-24 14:57:55,251 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 438 transitions. Word has length 81 [2020-09-24 14:57:55,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:55,252 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 438 transitions. [2020-09-24 14:57:55,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:55,252 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 438 transitions. [2020-09-24 14:57:55,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-24 14:57:55,257 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:55,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:55,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:57:55,258 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:55,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:55,258 INFO L82 PathProgramCache]: Analyzing trace with hash -172878236, now seen corresponding path program 1 times [2020-09-24 14:57:55,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:55,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791674828] [2020-09-24 14:57:55,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:55,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791674828] [2020-09-24 14:57:55,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:55,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:55,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073623478] [2020-09-24 14:57:55,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:55,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:55,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:55,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,355 INFO L87 Difference]: Start difference. First operand 323 states and 438 transitions. Second operand 3 states. [2020-09-24 14:57:55,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:55,377 INFO L93 Difference]: Finished difference Result 859 states and 1200 transitions. [2020-09-24 14:57:55,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:55,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-09-24 14:57:55,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:55,382 INFO L225 Difference]: With dead ends: 859 [2020-09-24 14:57:55,382 INFO L226 Difference]: Without dead ends: 585 [2020-09-24 14:57:55,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-09-24 14:57:55,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 583. [2020-09-24 14:57:55,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-09-24 14:57:55,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 802 transitions. [2020-09-24 14:57:55,402 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 802 transitions. Word has length 81 [2020-09-24 14:57:55,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:55,402 INFO L479 AbstractCegarLoop]: Abstraction has 583 states and 802 transitions. [2020-09-24 14:57:55,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:55,403 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 802 transitions. [2020-09-24 14:57:55,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-24 14:57:55,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:55,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:55,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 14:57:55,405 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:55,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:55,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1064013698, now seen corresponding path program 1 times [2020-09-24 14:57:55,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:55,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331579001] [2020-09-24 14:57:55,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:55,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331579001] [2020-09-24 14:57:55,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:55,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:55,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593672989] [2020-09-24 14:57:55,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:55,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:55,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:55,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,478 INFO L87 Difference]: Start difference. First operand 583 states and 802 transitions. Second operand 3 states. [2020-09-24 14:57:55,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:55,517 INFO L93 Difference]: Finished difference Result 1627 states and 2276 transitions. [2020-09-24 14:57:55,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:55,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-09-24 14:57:55,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:55,527 INFO L225 Difference]: With dead ends: 1627 [2020-09-24 14:57:55,527 INFO L226 Difference]: Without dead ends: 1093 [2020-09-24 14:57:55,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2020-09-24 14:57:55,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1091. [2020-09-24 14:57:55,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-09-24 14:57:55,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1506 transitions. [2020-09-24 14:57:55,571 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1506 transitions. Word has length 82 [2020-09-24 14:57:55,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:55,572 INFO L479 AbstractCegarLoop]: Abstraction has 1091 states and 1506 transitions. [2020-09-24 14:57:55,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:55,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1506 transitions. [2020-09-24 14:57:55,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-24 14:57:55,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:55,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:55,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 14:57:55,582 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:55,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:55,583 INFO L82 PathProgramCache]: Analyzing trace with hash -637098359, now seen corresponding path program 1 times [2020-09-24 14:57:55,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:55,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712490146] [2020-09-24 14:57:55,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:55,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712490146] [2020-09-24 14:57:55,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:55,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:55,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123139220] [2020-09-24 14:57:55,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:55,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:55,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:55,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,643 INFO L87 Difference]: Start difference. First operand 1091 states and 1506 transitions. Second operand 3 states. [2020-09-24 14:57:55,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:55,669 INFO L93 Difference]: Finished difference Result 1343 states and 1876 transitions. [2020-09-24 14:57:55,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:55,670 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-09-24 14:57:55,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:55,677 INFO L225 Difference]: With dead ends: 1343 [2020-09-24 14:57:55,678 INFO L226 Difference]: Without dead ends: 1341 [2020-09-24 14:57:55,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-09-24 14:57:55,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1091. [2020-09-24 14:57:55,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-09-24 14:57:55,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1498 transitions. [2020-09-24 14:57:55,714 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1498 transitions. Word has length 82 [2020-09-24 14:57:55,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:55,714 INFO L479 AbstractCegarLoop]: Abstraction has 1091 states and 1498 transitions. [2020-09-24 14:57:55,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:55,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1498 transitions. [2020-09-24 14:57:55,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-24 14:57:55,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:55,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:55,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 14:57:55,717 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:55,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:55,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1659922654, now seen corresponding path program 1 times [2020-09-24 14:57:55,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:55,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102369920] [2020-09-24 14:57:55,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:55,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102369920] [2020-09-24 14:57:55,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:55,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:55,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481135548] [2020-09-24 14:57:55,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:55,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:55,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:55,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,783 INFO L87 Difference]: Start difference. First operand 1091 states and 1498 transitions. Second operand 3 states. [2020-09-24 14:57:55,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:55,812 INFO L93 Difference]: Finished difference Result 1335 states and 1852 transitions. [2020-09-24 14:57:55,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:55,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-09-24 14:57:55,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:55,819 INFO L225 Difference]: With dead ends: 1335 [2020-09-24 14:57:55,820 INFO L226 Difference]: Without dead ends: 1333 [2020-09-24 14:57:55,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2020-09-24 14:57:55,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1091. [2020-09-24 14:57:55,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-09-24 14:57:55,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1490 transitions. [2020-09-24 14:57:55,849 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1490 transitions. Word has length 83 [2020-09-24 14:57:55,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:55,850 INFO L479 AbstractCegarLoop]: Abstraction has 1091 states and 1490 transitions. [2020-09-24 14:57:55,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:55,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1490 transitions. [2020-09-24 14:57:55,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-24 14:57:55,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:55,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:55,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 14:57:55,852 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:55,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:55,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1375558424, now seen corresponding path program 1 times [2020-09-24 14:57:55,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:55,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741212918] [2020-09-24 14:57:55,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:55,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741212918] [2020-09-24 14:57:55,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:55,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:55,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084586829] [2020-09-24 14:57:55,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:55,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:55,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:55,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,891 INFO L87 Difference]: Start difference. First operand 1091 states and 1490 transitions. Second operand 3 states. [2020-09-24 14:57:55,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:55,929 INFO L93 Difference]: Finished difference Result 3127 states and 4308 transitions. [2020-09-24 14:57:55,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:55,930 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-09-24 14:57:55,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:55,939 INFO L225 Difference]: With dead ends: 3127 [2020-09-24 14:57:55,940 INFO L226 Difference]: Without dead ends: 2085 [2020-09-24 14:57:55,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2020-09-24 14:57:55,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 2083. [2020-09-24 14:57:55,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-09-24 14:57:55,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2834 transitions. [2020-09-24 14:57:55,998 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2834 transitions. Word has length 83 [2020-09-24 14:57:55,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:55,999 INFO L479 AbstractCegarLoop]: Abstraction has 2083 states and 2834 transitions. [2020-09-24 14:57:55,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:55,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2834 transitions. [2020-09-24 14:57:56,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-24 14:57:56,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:56,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:56,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 14:57:56,002 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:56,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:56,003 INFO L82 PathProgramCache]: Analyzing trace with hash -146869603, now seen corresponding path program 1 times [2020-09-24 14:57:56,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:56,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586422277] [2020-09-24 14:57:56,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:56,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586422277] [2020-09-24 14:57:56,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:56,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:56,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815283717] [2020-09-24 14:57:56,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:56,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:56,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:56,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:56,041 INFO L87 Difference]: Start difference. First operand 2083 states and 2834 transitions. Second operand 3 states. [2020-09-24 14:57:56,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:56,072 INFO L93 Difference]: Finished difference Result 2535 states and 3476 transitions. [2020-09-24 14:57:56,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:56,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-09-24 14:57:56,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:56,085 INFO L225 Difference]: With dead ends: 2535 [2020-09-24 14:57:56,085 INFO L226 Difference]: Without dead ends: 2533 [2020-09-24 14:57:56,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:56,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2020-09-24 14:57:56,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2083. [2020-09-24 14:57:56,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-09-24 14:57:56,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2818 transitions. [2020-09-24 14:57:56,157 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2818 transitions. Word has length 84 [2020-09-24 14:57:56,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:56,157 INFO L479 AbstractCegarLoop]: Abstraction has 2083 states and 2818 transitions. [2020-09-24 14:57:56,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2818 transitions. [2020-09-24 14:57:56,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-24 14:57:56,160 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:56,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:56,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 14:57:56,160 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:56,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:56,161 INFO L82 PathProgramCache]: Analyzing trace with hash -307116750, now seen corresponding path program 1 times [2020-09-24 14:57:56,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:56,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531838527] [2020-09-24 14:57:56,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:56,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531838527] [2020-09-24 14:57:56,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:56,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:56,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577310373] [2020-09-24 14:57:56,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:56,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:56,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:56,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:56,204 INFO L87 Difference]: Start difference. First operand 2083 states and 2818 transitions. Second operand 3 states. [2020-09-24 14:57:56,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:56,260 INFO L93 Difference]: Finished difference Result 6055 states and 8228 transitions. [2020-09-24 14:57:56,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:56,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-09-24 14:57:56,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:56,282 INFO L225 Difference]: With dead ends: 6055 [2020-09-24 14:57:56,314 INFO L226 Difference]: Without dead ends: 4021 [2020-09-24 14:57:56,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:56,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2020-09-24 14:57:56,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 4019. [2020-09-24 14:57:56,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4019 states. [2020-09-24 14:57:56,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 5394 transitions. [2020-09-24 14:57:56,417 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 5394 transitions. Word has length 84 [2020-09-24 14:57:56,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:56,417 INFO L479 AbstractCegarLoop]: Abstraction has 4019 states and 5394 transitions. [2020-09-24 14:57:56,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:56,418 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 5394 transitions. [2020-09-24 14:57:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 14:57:56,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:56,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:56,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 14:57:56,421 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:56,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:56,422 INFO L82 PathProgramCache]: Analyzing trace with hash -322854350, now seen corresponding path program 1 times [2020-09-24 14:57:56,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:56,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631285354] [2020-09-24 14:57:56,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:56,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631285354] [2020-09-24 14:57:56,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:56,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:56,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596943482] [2020-09-24 14:57:56,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:56,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:56,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:56,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:56,460 INFO L87 Difference]: Start difference. First operand 4019 states and 5394 transitions. Second operand 3 states. [2020-09-24 14:57:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:56,500 INFO L93 Difference]: Finished difference Result 4855 states and 6548 transitions. [2020-09-24 14:57:56,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:56,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-09-24 14:57:56,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:56,522 INFO L225 Difference]: With dead ends: 4855 [2020-09-24 14:57:56,522 INFO L226 Difference]: Without dead ends: 4853 [2020-09-24 14:57:56,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:56,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4853 states. [2020-09-24 14:57:56,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4853 to 4019. [2020-09-24 14:57:56,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4019 states. [2020-09-24 14:57:56,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 5362 transitions. [2020-09-24 14:57:56,620 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 5362 transitions. Word has length 85 [2020-09-24 14:57:56,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:56,620 INFO L479 AbstractCegarLoop]: Abstraction has 4019 states and 5362 transitions. [2020-09-24 14:57:56,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:56,621 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 5362 transitions. [2020-09-24 14:57:56,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 14:57:56,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:56,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:56,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 14:57:56,624 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:56,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:56,625 INFO L82 PathProgramCache]: Analyzing trace with hash -930439220, now seen corresponding path program 1 times [2020-09-24 14:57:56,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:56,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119178560] [2020-09-24 14:57:56,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:56,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119178560] [2020-09-24 14:57:56,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:56,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:56,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260770254] [2020-09-24 14:57:56,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:56,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:56,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:56,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:56,670 INFO L87 Difference]: Start difference. First operand 4019 states and 5362 transitions. Second operand 3 states. [2020-09-24 14:57:56,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:56,780 INFO L93 Difference]: Finished difference Result 11767 states and 15732 transitions. [2020-09-24 14:57:56,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:56,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-09-24 14:57:56,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:56,851 INFO L225 Difference]: With dead ends: 11767 [2020-09-24 14:57:56,852 INFO L226 Difference]: Without dead ends: 7797 [2020-09-24 14:57:56,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:56,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7797 states. [2020-09-24 14:57:57,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7797 to 7795. [2020-09-24 14:57:57,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7795 states. [2020-09-24 14:57:57,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7795 states to 7795 states and 10290 transitions. [2020-09-24 14:57:57,063 INFO L78 Accepts]: Start accepts. Automaton has 7795 states and 10290 transitions. Word has length 85 [2020-09-24 14:57:57,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:57,063 INFO L479 AbstractCegarLoop]: Abstraction has 7795 states and 10290 transitions. [2020-09-24 14:57:57,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:57,063 INFO L276 IsEmpty]: Start isEmpty. Operand 7795 states and 10290 transitions. [2020-09-24 14:57:57,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 14:57:57,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:57,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:57,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 14:57:57,075 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:57,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:57,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1483413839, now seen corresponding path program 1 times [2020-09-24 14:57:57,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:57,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793251372] [2020-09-24 14:57:57,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:57,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793251372] [2020-09-24 14:57:57,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:57,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:57,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282805610] [2020-09-24 14:57:57,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:57,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:57,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:57,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:57,126 INFO L87 Difference]: Start difference. First operand 7795 states and 10290 transitions. Second operand 3 states. [2020-09-24 14:57:57,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:57,199 INFO L93 Difference]: Finished difference Result 9335 states and 12340 transitions. [2020-09-24 14:57:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:57,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-09-24 14:57:57,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:57,221 INFO L225 Difference]: With dead ends: 9335 [2020-09-24 14:57:57,221 INFO L226 Difference]: Without dead ends: 9333 [2020-09-24 14:57:57,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:57,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9333 states. [2020-09-24 14:57:57,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9333 to 7795. [2020-09-24 14:57:57,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7795 states. [2020-09-24 14:57:57,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7795 states to 7795 states and 10226 transitions. [2020-09-24 14:57:57,485 INFO L78 Accepts]: Start accepts. Automaton has 7795 states and 10226 transitions. Word has length 86 [2020-09-24 14:57:57,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:57,485 INFO L479 AbstractCegarLoop]: Abstraction has 7795 states and 10226 transitions. [2020-09-24 14:57:57,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:57,485 INFO L276 IsEmpty]: Start isEmpty. Operand 7795 states and 10226 transitions. [2020-09-24 14:57:57,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 14:57:57,491 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:57,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:57,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 14:57:57,492 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:57,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:57,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1221401062, now seen corresponding path program 1 times [2020-09-24 14:57:57,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:57,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206367399] [2020-09-24 14:57:57,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:57,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206367399] [2020-09-24 14:57:57,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:57,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:57,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095616137] [2020-09-24 14:57:57,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:57,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:57,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:57,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:57,532 INFO L87 Difference]: Start difference. First operand 7795 states and 10226 transitions. Second operand 3 states. [2020-09-24 14:57:57,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:57,689 INFO L93 Difference]: Finished difference Result 22903 states and 30068 transitions. [2020-09-24 14:57:57,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:57,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-09-24 14:57:57,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:57,723 INFO L225 Difference]: With dead ends: 22903 [2020-09-24 14:57:57,724 INFO L226 Difference]: Without dead ends: 15157 [2020-09-24 14:57:57,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:57,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15157 states. [2020-09-24 14:57:57,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15157 to 15155. [2020-09-24 14:57:57,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15155 states. [2020-09-24 14:57:58,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15155 states to 15155 states and 19634 transitions. [2020-09-24 14:57:58,130 INFO L78 Accepts]: Start accepts. Automaton has 15155 states and 19634 transitions. Word has length 86 [2020-09-24 14:57:58,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:58,131 INFO L479 AbstractCegarLoop]: Abstraction has 15155 states and 19634 transitions. [2020-09-24 14:57:58,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:58,131 INFO L276 IsEmpty]: Start isEmpty. Operand 15155 states and 19634 transitions. [2020-09-24 14:57:58,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 14:57:58,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:58,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:58,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 14:57:58,142 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:58,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:58,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1193948038, now seen corresponding path program 1 times [2020-09-24 14:57:58,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:58,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183489440] [2020-09-24 14:57:58,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:58,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:58,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:58,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183489440] [2020-09-24 14:57:58,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:58,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:58,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967833443] [2020-09-24 14:57:58,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:58,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:58,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:58,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:58,184 INFO L87 Difference]: Start difference. First operand 15155 states and 19634 transitions. Second operand 3 states. [2020-09-24 14:57:58,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:58,305 INFO L93 Difference]: Finished difference Result 17975 states and 23220 transitions. [2020-09-24 14:57:58,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:58,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-09-24 14:57:58,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:58,340 INFO L225 Difference]: With dead ends: 17975 [2020-09-24 14:57:58,340 INFO L226 Difference]: Without dead ends: 17973 [2020-09-24 14:57:58,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:58,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17973 states. [2020-09-24 14:57:58,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17973 to 15155. [2020-09-24 14:57:58,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15155 states. [2020-09-24 14:57:58,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15155 states to 15155 states and 19506 transitions. [2020-09-24 14:57:58,660 INFO L78 Accepts]: Start accepts. Automaton has 15155 states and 19506 transitions. Word has length 87 [2020-09-24 14:57:58,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:58,661 INFO L479 AbstractCegarLoop]: Abstraction has 15155 states and 19506 transitions. [2020-09-24 14:57:58,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:58,661 INFO L276 IsEmpty]: Start isEmpty. Operand 15155 states and 19506 transitions. [2020-09-24 14:57:58,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 14:57:58,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:58,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:58,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 14:57:58,677 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:58,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:58,678 INFO L82 PathProgramCache]: Analyzing trace with hash -791026560, now seen corresponding path program 1 times [2020-09-24 14:57:58,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:58,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279184189] [2020-09-24 14:57:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:58,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:59,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:59,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279184189] [2020-09-24 14:57:59,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:59,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:59,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258526494] [2020-09-24 14:57:59,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:59,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:59,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:59,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:59,167 INFO L87 Difference]: Start difference. First operand 15155 states and 19506 transitions. Second operand 3 states. [2020-09-24 14:57:59,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:59,372 INFO L93 Difference]: Finished difference Result 44599 states and 57396 transitions. [2020-09-24 14:57:59,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:59,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-09-24 14:57:59,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:59,427 INFO L225 Difference]: With dead ends: 44599 [2020-09-24 14:57:59,428 INFO L226 Difference]: Without dead ends: 29493 [2020-09-24 14:57:59,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:59,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29493 states. [2020-09-24 14:57:59,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29493 to 29491. [2020-09-24 14:57:59,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29491 states. [2020-09-24 14:58:00,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29491 states to 29491 states and 37426 transitions. [2020-09-24 14:58:00,008 INFO L78 Accepts]: Start accepts. Automaton has 29491 states and 37426 transitions. Word has length 87 [2020-09-24 14:58:00,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:00,009 INFO L479 AbstractCegarLoop]: Abstraction has 29491 states and 37426 transitions. [2020-09-24 14:58:00,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:58:00,009 INFO L276 IsEmpty]: Start isEmpty. Operand 29491 states and 37426 transitions. [2020-09-24 14:58:00,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-24 14:58:00,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:00,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:00,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 14:58:00,027 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:00,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:00,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1707179323, now seen corresponding path program 1 times [2020-09-24 14:58:00,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:00,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448056463] [2020-09-24 14:58:00,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:00,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:58:00,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448056463] [2020-09-24 14:58:00,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:58:00,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:58:00,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70001729] [2020-09-24 14:58:00,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:58:00,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:00,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:58:00,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:58:00,066 INFO L87 Difference]: Start difference. First operand 29491 states and 37426 transitions. Second operand 3 states. [2020-09-24 14:58:00,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:00,255 INFO L93 Difference]: Finished difference Result 34615 states and 43572 transitions. [2020-09-24 14:58:00,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:58:00,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-09-24 14:58:00,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:00,333 INFO L225 Difference]: With dead ends: 34615 [2020-09-24 14:58:00,333 INFO L226 Difference]: Without dead ends: 34613 [2020-09-24 14:58:00,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:58:00,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34613 states. [2020-09-24 14:58:00,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34613 to 29491. [2020-09-24 14:58:00,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29491 states. [2020-09-24 14:58:00,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29491 states to 29491 states and 37170 transitions. [2020-09-24 14:58:00,955 INFO L78 Accepts]: Start accepts. Automaton has 29491 states and 37170 transitions. Word has length 88 [2020-09-24 14:58:00,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:00,956 INFO L479 AbstractCegarLoop]: Abstraction has 29491 states and 37170 transitions. [2020-09-24 14:58:00,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:58:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 29491 states and 37170 transitions. [2020-09-24 14:58:00,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-24 14:58:00,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:00,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:00,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 14:58:00,974 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:00,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:00,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1248226970, now seen corresponding path program 1 times [2020-09-24 14:58:00,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:00,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395489859] [2020-09-24 14:58:00,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:01,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:58:01,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395489859] [2020-09-24 14:58:01,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:58:01,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:58:01,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405577871] [2020-09-24 14:58:01,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:58:01,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:01,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:58:01,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:58:01,014 INFO L87 Difference]: Start difference. First operand 29491 states and 37170 transitions. Second operand 3 states. [2020-09-24 14:58:01,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:01,522 INFO L93 Difference]: Finished difference Result 86839 states and 109364 transitions. [2020-09-24 14:58:01,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:58:01,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-09-24 14:58:01,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:01,613 INFO L225 Difference]: With dead ends: 86839 [2020-09-24 14:58:01,613 INFO L226 Difference]: Without dead ends: 57397 [2020-09-24 14:58:02,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:58:02,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57397 states. [2020-09-24 14:58:03,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57397 to 57395. [2020-09-24 14:58:03,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57395 states. [2020-09-24 14:58:04,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57395 states to 57395 states and 71218 transitions. [2020-09-24 14:58:04,603 INFO L78 Accepts]: Start accepts. Automaton has 57395 states and 71218 transitions. Word has length 88 [2020-09-24 14:58:04,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:04,603 INFO L479 AbstractCegarLoop]: Abstraction has 57395 states and 71218 transitions. [2020-09-24 14:58:04,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:58:04,604 INFO L276 IsEmpty]: Start isEmpty. Operand 57395 states and 71218 transitions. [2020-09-24 14:58:04,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-24 14:58:04,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:04,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:04,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 14:58:04,640 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:04,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:04,640 INFO L82 PathProgramCache]: Analyzing trace with hash 40577332, now seen corresponding path program 1 times [2020-09-24 14:58:04,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:04,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294387824] [2020-09-24 14:58:04,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:04,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:58:04,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294387824] [2020-09-24 14:58:04,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:58:04,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:58:04,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103071959] [2020-09-24 14:58:04,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:58:04,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:04,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:58:04,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:58:04,678 INFO L87 Difference]: Start difference. First operand 57395 states and 71218 transitions. Second operand 3 states. [2020-09-24 14:58:05,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:05,460 INFO L93 Difference]: Finished difference Result 169015 states and 209460 transitions. [2020-09-24 14:58:05,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:58:05,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-09-24 14:58:05,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:05,585 INFO L225 Difference]: With dead ends: 169015 [2020-09-24 14:58:05,585 INFO L226 Difference]: Without dead ends: 85301 [2020-09-24 14:58:05,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:58:05,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85301 states. [2020-09-24 14:58:07,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85301 to 85299. [2020-09-24 14:58:07,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85299 states. [2020-09-24 14:58:07,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85299 states to 85299 states and 103218 transitions. [2020-09-24 14:58:07,212 INFO L78 Accepts]: Start accepts. Automaton has 85299 states and 103218 transitions. Word has length 89 [2020-09-24 14:58:07,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:07,213 INFO L479 AbstractCegarLoop]: Abstraction has 85299 states and 103218 transitions. [2020-09-24 14:58:07,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:58:07,213 INFO L276 IsEmpty]: Start isEmpty. Operand 85299 states and 103218 transitions. [2020-09-24 14:58:07,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-24 14:58:07,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:07,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:07,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-24 14:58:07,503 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:07,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:07,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1447813926, now seen corresponding path program 1 times [2020-09-24 14:58:07,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:07,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464847463] [2020-09-24 14:58:07,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:07,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:58:07,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464847463] [2020-09-24 14:58:07,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:58:07,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:58:07,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299852071] [2020-09-24 14:58:07,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:58:07,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:07,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:58:07,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:58:07,543 INFO L87 Difference]: Start difference. First operand 85299 states and 103218 transitions. Second operand 3 states. [2020-09-24 14:58:08,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:08,136 INFO L93 Difference]: Finished difference Result 94519 states and 112948 transitions. [2020-09-24 14:58:08,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:58:08,136 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-09-24 14:58:08,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:08,225 INFO L225 Difference]: With dead ends: 94519 [2020-09-24 14:58:08,225 INFO L226 Difference]: Without dead ends: 66613 [2020-09-24 14:58:08,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:58:08,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66613 states. [2020-09-24 14:58:10,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66613 to 57395. [2020-09-24 14:58:10,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57395 states. [2020-09-24 14:58:10,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57395 states to 57395 states and 68658 transitions. [2020-09-24 14:58:10,766 INFO L78 Accepts]: Start accepts. Automaton has 57395 states and 68658 transitions. Word has length 89 [2020-09-24 14:58:10,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:10,767 INFO L479 AbstractCegarLoop]: Abstraction has 57395 states and 68658 transitions. [2020-09-24 14:58:10,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:58:10,767 INFO L276 IsEmpty]: Start isEmpty. Operand 57395 states and 68658 transitions. [2020-09-24 14:58:10,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-24 14:58:10,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:10,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:10,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-24 14:58:10,802 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:10,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:10,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1997420839, now seen corresponding path program 1 times [2020-09-24 14:58:10,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:10,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995370490] [2020-09-24 14:58:10,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:10,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:58:10,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995370490] [2020-09-24 14:58:10,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:58:10,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:58:10,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538157220] [2020-09-24 14:58:10,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:58:10,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:10,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:58:10,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:58:10,841 INFO L87 Difference]: Start difference. First operand 57395 states and 68658 transitions. Second operand 3 states. [2020-09-24 14:58:11,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:11,099 INFO L93 Difference]: Finished difference Result 57395 states and 68658 transitions. [2020-09-24 14:58:11,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:58:11,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-09-24 14:58:11,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:11,100 INFO L225 Difference]: With dead ends: 57395 [2020-09-24 14:58:11,100 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 14:58:11,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:58:11,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 14:58:11,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 14:58:11,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 14:58:11,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 14:58:11,152 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 90 [2020-09-24 14:58:11,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:11,152 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 14:58:11,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:58:11,152 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 14:58:11,152 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 14:58:11,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-24 14:58:11,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 14:58:11,183 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 14:58:11,183 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 14:58:11,183 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 14:58:11,183 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 14:58:11,183 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 14:58:11,184 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 14:58:11,184 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 177) no Hoare annotation was computed. [2020-09-24 14:58:11,184 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-09-24 14:58:11,184 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 14:58:11,184 INFO L268 CegarLoopResult]: For program point L168(line 168) no Hoare annotation was computed. [2020-09-24 14:58:11,184 INFO L264 CegarLoopResult]: At program point L168-1(lines 5 177) the Hoare annotation is: false [2020-09-24 14:58:11,184 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-24 14:58:11,184 INFO L268 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-09-24 14:58:11,185 INFO L268 CegarLoopResult]: For program point L36-2(line 36) no Hoare annotation was computed. [2020-09-24 14:58:11,185 INFO L268 CegarLoopResult]: For program point L119(line 119) no Hoare annotation was computed. [2020-09-24 14:58:11,185 INFO L268 CegarLoopResult]: For program point L152-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,185 INFO L268 CegarLoopResult]: For program point L53(line 53) no Hoare annotation was computed. [2020-09-24 14:58:11,185 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-09-24 14:58:11,185 INFO L268 CegarLoopResult]: For program point L103-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,185 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-24 14:58:11,185 INFO L268 CegarLoopResult]: For program point L153(line 153) no Hoare annotation was computed. [2020-09-24 14:58:11,186 INFO L268 CegarLoopResult]: For program point L87-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,186 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 14:58:11,186 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 14:58:11,186 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-24 14:58:11,186 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 177) no Hoare annotation was computed. [2020-09-24 14:58:11,186 INFO L268 CegarLoopResult]: For program point L104(line 104) no Hoare annotation was computed. [2020-09-24 14:58:11,186 INFO L268 CegarLoopResult]: For program point L137-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,186 INFO L268 CegarLoopResult]: For program point L71(lines 71 73) no Hoare annotation was computed. [2020-09-24 14:58:11,187 INFO L268 CegarLoopResult]: For program point L71-2(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,187 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-09-24 14:58:11,187 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-09-24 14:58:11,187 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-24 14:58:11,187 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 14:58:11,187 INFO L268 CegarLoopResult]: For program point L138(line 138) no Hoare annotation was computed. [2020-09-24 14:58:11,187 INFO L268 CegarLoopResult]: For program point L72(line 72) no Hoare annotation was computed. [2020-09-24 14:58:11,187 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 14:58:11,188 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 14:58:11,188 INFO L268 CegarLoopResult]: For program point L122-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,188 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-09-24 14:58:11,188 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-24 14:58:11,188 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-24 14:58:11,188 INFO L268 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-09-24 14:58:11,188 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-09-24 14:58:11,188 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 14:58:11,189 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 14:58:11,189 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-24 14:58:11,189 INFO L271 CegarLoopResult]: At program point L173(lines 5 177) the Hoare annotation is: true [2020-09-24 14:58:11,189 INFO L268 CegarLoopResult]: For program point L107-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,189 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-09-24 14:58:11,189 INFO L268 CegarLoopResult]: For program point L157-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,189 INFO L268 CegarLoopResult]: For program point L91-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,189 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 14:58:11,190 INFO L268 CegarLoopResult]: For program point L108(line 108) no Hoare annotation was computed. [2020-09-24 14:58:11,190 INFO L268 CegarLoopResult]: For program point L75-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,190 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 14:58:11,190 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 14:58:11,190 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 14:58:11,190 INFO L268 CegarLoopResult]: For program point L158(line 158) no Hoare annotation was computed. [2020-09-24 14:58:11,190 INFO L268 CegarLoopResult]: For program point L92(line 92) no Hoare annotation was computed. [2020-09-24 14:58:11,190 INFO L268 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed. [2020-09-24 14:58:11,191 INFO L268 CegarLoopResult]: For program point L142-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,191 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-09-24 14:58:11,191 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-24 14:58:11,191 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 14:58:11,191 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-09-24 14:58:11,191 INFO L268 CegarLoopResult]: For program point L43-2(line 43) no Hoare annotation was computed. [2020-09-24 14:58:11,191 INFO L268 CegarLoopResult]: For program point L159(line 159) no Hoare annotation was computed. [2020-09-24 14:58:11,191 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 14:58:11,192 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-24 14:58:11,192 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-24 14:58:11,192 INFO L268 CegarLoopResult]: For program point L176(line 176) no Hoare annotation was computed. [2020-09-24 14:58:11,192 INFO L268 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-09-24 14:58:11,192 INFO L268 CegarLoopResult]: For program point L44(lines 44 46) no Hoare annotation was computed. [2020-09-24 14:58:11,192 INFO L268 CegarLoopResult]: For program point L127-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,192 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-09-24 14:58:11,192 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-24 14:58:11,192 INFO L268 CegarLoopResult]: For program point L144(line 144) no Hoare annotation was computed. [2020-09-24 14:58:11,193 INFO L268 CegarLoopResult]: For program point L111-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,193 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 14:58:11,193 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 14:58:11,193 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 14:58:11,193 INFO L268 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-09-24 14:58:11,193 INFO L268 CegarLoopResult]: For program point L95-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,193 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-09-24 14:58:11,193 INFO L268 CegarLoopResult]: For program point L79-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,194 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 14:58:11,194 INFO L268 CegarLoopResult]: For program point L129(line 129) no Hoare annotation was computed. [2020-09-24 14:58:11,194 INFO L268 CegarLoopResult]: For program point L162-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,194 INFO L268 CegarLoopResult]: For program point L96(line 96) no Hoare annotation was computed. [2020-09-24 14:58:11,194 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-09-24 14:58:11,194 INFO L268 CegarLoopResult]: For program point L63(line 63) no Hoare annotation was computed. [2020-09-24 14:58:11,194 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 14:58:11,194 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 177) the Hoare annotation is: true [2020-09-24 14:58:11,195 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-24 14:58:11,195 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-24 14:58:11,195 INFO L268 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-09-24 14:58:11,195 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-24 14:58:11,195 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-09-24 14:58:11,195 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 14:58:11,195 INFO L268 CegarLoopResult]: For program point L147-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,196 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 14:58:11,196 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 14:58:11,196 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 14:58:11,196 INFO L268 CegarLoopResult]: For program point L164(line 164) no Hoare annotation was computed. [2020-09-24 14:58:11,196 INFO L268 CegarLoopResult]: For program point L65(line 65) no Hoare annotation was computed. [2020-09-24 14:58:11,196 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-09-24 14:58:11,196 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-09-24 14:58:11,196 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 14:58:11,196 INFO L268 CegarLoopResult]: For program point L132-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,197 INFO L268 CegarLoopResult]: For program point L99-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,197 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 14:58:11,197 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-24 14:58:11,197 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-24 14:58:11,197 INFO L268 CegarLoopResult]: For program point L149(line 149) no Hoare annotation was computed. [2020-09-24 14:58:11,197 INFO L268 CegarLoopResult]: For program point L83-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,197 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-09-24 14:58:11,197 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-09-24 14:58:11,197 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-09-24 14:58:11,198 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-24 14:58:11,198 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-09-24 14:58:11,198 INFO L268 CegarLoopResult]: For program point L117-1(lines 42 172) no Hoare annotation was computed. [2020-09-24 14:58:11,198 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-24 14:58:11,198 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 14:58:11,198 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 14:58:11,198 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 14:58:11,198 INFO L268 CegarLoopResult]: For program point L134(line 134) no Hoare annotation was computed. [2020-09-24 14:58:11,199 INFO L271 CegarLoopResult]: At program point L167-1(lines 42 172) the Hoare annotation is: true [2020-09-24 14:58:11,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:58:11 BoogieIcfgContainer [2020-09-24 14:58:11,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:58:11,216 INFO L168 Benchmark]: Toolchain (without parser) took 18327.22 ms. Allocated memory was 139.5 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 101.4 MB in the beginning and 875.6 MB in the end (delta: -774.2 MB). Peak memory consumption was 515.5 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:11,217 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 14:58:11,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.26 ms. Allocated memory is still 139.5 MB. Free memory was 100.8 MB in the beginning and 90.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:11,218 INFO L168 Benchmark]: Boogie Preprocessor took 151.32 ms. Allocated memory was 139.5 MB in the beginning and 200.3 MB in the end (delta: 60.8 MB). Free memory was 90.0 MB in the beginning and 177.6 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:11,219 INFO L168 Benchmark]: RCFGBuilder took 580.63 ms. Allocated memory is still 200.3 MB. Free memory was 177.6 MB in the beginning and 151.5 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:11,219 INFO L168 Benchmark]: TraceAbstraction took 17232.30 ms. Allocated memory was 200.3 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 150.9 MB in the beginning and 875.6 MB in the end (delta: -724.7 MB). Peak memory consumption was 504.2 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:11,227 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 350.26 ms. Allocated memory is still 139.5 MB. Free memory was 100.8 MB in the beginning and 90.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.32 ms. Allocated memory was 139.5 MB in the beginning and 200.3 MB in the end (delta: 60.8 MB). Free memory was 90.0 MB in the beginning and 177.6 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 580.63 ms. Allocated memory is still 200.3 MB. Free memory was 177.6 MB in the beginning and 151.5 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17232.30 ms. Allocated memory was 200.3 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 150.9 MB in the beginning and 875.6 MB in the end (delta: -724.7 MB). Peak memory consumption was 504.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 175]: 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: 42]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 128 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 17.0s, OverallIterations: 22, TraceHistogramMax: 1, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4343 SDtfs, 1594 SDslu, 3111 SDs, 0 SdLazy, 109 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85299occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.4s AutomataMinimizationTime, 22 MinimizatonAttempts, 20636 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 2057 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 1859 NumberOfCodeBlocks, 1859 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1837 ConstructedInterpolants, 0 QuantifiedInterpolants, 195877 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 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...