/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 true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_6.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-24 18:16:53,422 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 18:16:53,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 18:16:53,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 18:16:53,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 18:16:53,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 18:16:53,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 18:16:53,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 18:16:53,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 18:16:53,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 18:16:53,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 18:16:53,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 18:16:53,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 18:16:53,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 18:16:53,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 18:16:53,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 18:16:53,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 18:16:53,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 18:16:53,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 18:16:53,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 18:16:53,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 18:16:53,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 18:16:53,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 18:16:53,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 18:16:53,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 18:16:53,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 18:16:53,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 18:16:53,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 18:16:53,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 18:16:53,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 18:16:53,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 18:16:53,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 18:16:53,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 18:16:53,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 18:16:53,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 18:16:53,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 18:16:53,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 18:16:53,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 18:16:53,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 18:16:53,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 18:16:53,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 18:16:53,552 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 18:16:53,600 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 18:16:53,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 18:16:53,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 18:16:53,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 18:16:53,602 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 18:16:53,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 18:16:53,602 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 18:16:53,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 18:16:53,603 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 18:16:53,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 18:16:53,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 18:16:53,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 18:16:53,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 18:16:53,604 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 18:16:53,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 18:16:53,604 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 18:16:53,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 18:16:53,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 18:16:53,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 18:16:53,605 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 18:16:53,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 18:16:53,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 18:16:53,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 18:16:53,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 18:16:53,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 18:16:53,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 18:16:53,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 18:16:53,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 18:16:53,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 18:16:53,607 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 -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
[2020-09-24 18:16:54,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 18:16:54,075 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 18:16:54,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 18:16:54,084 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 18:16:54,084 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 18:16:54,085 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c
[2020-09-24 18:16:54,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ac8c7fa9/17ed7345919841b892f694addfca7e6f/FLAG5192c06f9
[2020-09-24 18:16:54,770 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 18:16:54,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_6.c
[2020-09-24 18:16:54,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ac8c7fa9/17ed7345919841b892f694addfca7e6f/FLAG5192c06f9
[2020-09-24 18:16:55,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ac8c7fa9/17ed7345919841b892f694addfca7e6f
[2020-09-24 18:16:55,199 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 18:16:55,205 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 18:16:55,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 18:16:55,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 18:16:55,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 18:16:55,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:16:55" (1/1) ...
[2020-09-24 18:16:55,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5790f45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:55, skipping insertion in model container
[2020-09-24 18:16:55,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:16:55" (1/1) ...
[2020-09-24 18:16:55,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 18:16:55,260 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 18:16:55,465 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 18:16:55,471 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 18:16:55,497 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 18:16:55,514 INFO L208 MainTranslator]: Completed translation
[2020-09-24 18:16:55,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:55 WrapperNode
[2020-09-24 18:16:55,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 18:16:55,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 18:16:55,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 18:16:55,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 18:16:55,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:55" (1/1) ...
[2020-09-24 18:16:55,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:55" (1/1) ...
[2020-09-24 18:16:55,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:55" (1/1) ...
[2020-09-24 18:16:55,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:55" (1/1) ...
[2020-09-24 18:16:55,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:55" (1/1) ...
[2020-09-24 18:16:55,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:55" (1/1) ...
[2020-09-24 18:16:55,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:55" (1/1) ...
[2020-09-24 18:16:55,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 18:16:55,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 18:16:55,640 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 18:16:55,640 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 18:16:55,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:55" (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 18:16:55,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 18:16:55,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 18:16:55,727 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 18:16:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 18:16:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 18:16:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 18:16:55,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 18:16:55,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 18:16:56,098 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 18:16:56,099 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 18:16:56,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:16:56 BoogieIcfgContainer
[2020-09-24 18:16:56,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 18:16:56,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 18:16:56,106 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 18:16:56,110 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 18:16:56,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:16:55" (1/3) ...
[2020-09-24 18:16:56,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d719dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:16:56, skipping insertion in model container
[2020-09-24 18:16:56,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:16:55" (2/3) ...
[2020-09-24 18:16:56,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d719dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:16:56, skipping insertion in model container
[2020-09-24 18:16:56,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:16:56" (3/3) ...
[2020-09-24 18:16:56,117 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c
[2020-09-24 18:16:56,126 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 18:16:56,136 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 18:16:56,157 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 18:16:56,187 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 18:16:56,187 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 18:16:56,187 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 18:16:56,187 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 18:16:56,187 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 18:16:56,188 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 18:16:56,188 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 18:16:56,188 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 18:16:56,213 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states.
[2020-09-24 18:16:56,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2020-09-24 18:16:56,223 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 18:16:56,224 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]
[2020-09-24 18:16:56,225 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:16:56,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:16:56,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1400694048, now seen corresponding path program 1 times
[2020-09-24 18:16:56,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:16:56,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126599897]
[2020-09-24 18:16:56,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:16:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:56,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:56,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:56,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-09-24 18:16:56,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:56,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239
[2020-09-24 18:16:56,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:56,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:16:56,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47
[2020-09-24 18:16:56,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 18:16:56,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-09-24 18:16:56,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:16:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:56,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:56,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:56,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 18:16:56,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:56,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 18:16:56,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:56,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:16:56,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:16:56,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:16:56,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:16:56,721 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 18:16:56,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126599897]
[2020-09-24 18:16:56,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:16:56,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 18:16:56,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179295576]
[2020-09-24 18:16:56,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 18:16:56,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:16:56,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 18:16:56,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 18:16:56,755 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 3 states.
[2020-09-24 18:16:56,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:16:56,835 INFO L93 Difference]: Finished difference Result 169 states and 229 transitions.
[2020-09-24 18:16:56,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-24 18:16:56,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49
[2020-09-24 18:16:56,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:16:56,853 INFO L225 Difference]: With dead ends: 169
[2020-09-24 18:16:56,854 INFO L226 Difference]: Without dead ends: 112
[2020-09-24 18:16:56,859 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 18:16:56,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2020-09-24 18:16:56,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110.
[2020-09-24 18:16:56,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states.
[2020-09-24 18:16:56,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 142 transitions.
[2020-09-24 18:16:56,922 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 142 transitions. Word has length 49
[2020-09-24 18:16:56,922 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:16:56,923 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 142 transitions.
[2020-09-24 18:16:56,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 18:16:56,923 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 142 transitions.
[2020-09-24 18:16:56,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2020-09-24 18:16:56,925 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 18:16:56,925 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]
[2020-09-24 18:16:56,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 18:16:56,926 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:16:56,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:16:56,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1290717684, now seen corresponding path program 1 times
[2020-09-24 18:16:56,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:16:56,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712343766]
[2020-09-24 18:16:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:16:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:56,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:57,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:57,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-09-24 18:16:57,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:57,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109
[2020-09-24 18:16:57,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:57,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:16:57,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48
[2020-09-24 18:16:57,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 18:16:57,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-24 18:16:57,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:16:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:57,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:57,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:57,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 18:16:57,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:57,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 18:16:57,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:57,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:16:57,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:16:57,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:16:57,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:16:57,127 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 18:16:57,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712343766]
[2020-09-24 18:16:57,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:16:57,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 18:16:57,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446427523]
[2020-09-24 18:16:57,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 18:16:57,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:16:57,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 18:16:57,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 18:16:57,137 INFO L87 Difference]: Start difference. First operand 110 states and 142 transitions. Second operand 3 states.
[2020-09-24 18:16:57,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:16:57,189 INFO L93 Difference]: Finished difference Result 135 states and 175 transitions.
[2020-09-24 18:16:57,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-24 18:16:57,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50
[2020-09-24 18:16:57,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:16:57,192 INFO L225 Difference]: With dead ends: 135
[2020-09-24 18:16:57,192 INFO L226 Difference]: Without dead ends: 133
[2020-09-24 18:16:57,194 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 18:16:57,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states.
[2020-09-24 18:16:57,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 110.
[2020-09-24 18:16:57,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states.
[2020-09-24 18:16:57,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 141 transitions.
[2020-09-24 18:16:57,209 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 141 transitions. Word has length 50
[2020-09-24 18:16:57,209 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:16:57,209 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 141 transitions.
[2020-09-24 18:16:57,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 18:16:57,210 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 141 transitions.
[2020-09-24 18:16:57,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2020-09-24 18:16:57,212 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 18:16:57,212 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]
[2020-09-24 18:16:57,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 18:16:57,213 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:16:57,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:16:57,213 INFO L82 PathProgramCache]: Analyzing trace with hash 472087846, now seen corresponding path program 1 times
[2020-09-24 18:16:57,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:16:57,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578755303]
[2020-09-24 18:16:57,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:16:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:57,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:57,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:57,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-09-24 18:16:57,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:57,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60
[2020-09-24 18:16:57,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:57,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:16:57,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48
[2020-09-24 18:16:57,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 18:16:57,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:16:57,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:16:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:57,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:57,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:57,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 18:16:57,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:57,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 18:16:57,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:16:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:16:57,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:16:57,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:16:57,330 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 18:16:57,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578755303]
[2020-09-24 18:16:57,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:16:57,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 18:16:57,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035656267]
[2020-09-24 18:16:57,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 18:16:57,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:16:57,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 18:16:57,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 18:16:57,333 INFO L87 Difference]: Start difference. First operand 110 states and 141 transitions. Second operand 3 states.
[2020-09-24 18:16:57,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:16:57,372 INFO L93 Difference]: Finished difference Result 266 states and 357 transitions.
[2020-09-24 18:16:57,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-24 18:16:57,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50
[2020-09-24 18:16:57,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:16:57,376 INFO L225 Difference]: With dead ends: 266
[2020-09-24 18:16:57,376 INFO L226 Difference]: Without dead ends: 185
[2020-09-24 18:16:57,378 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 18:16:57,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states.
[2020-09-24 18:16:57,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 183.
[2020-09-24 18:16:57,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states.
[2020-09-24 18:16:57,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 240 transitions.
[2020-09-24 18:16:57,394 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 240 transitions. Word has length 50
[2020-09-24 18:16:57,394 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:16:57,395 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 240 transitions.
[2020-09-24 18:16:57,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 18:16:57,395 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 240 transitions.
[2020-09-24 18:16:57,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2020-09-24 18:16:57,397 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 18:16:57,397 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]
[2020-09-24 18:16:57,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 18:16:57,398 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:16:57,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:16:57,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1750067028, now seen corresponding path program 1 times
[2020-09-24 18:16:57,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:16:57,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165323854]
[2020-09-24 18:16:57,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:16:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:57,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:57,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:57,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58
[2020-09-24 18:16:57,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:57,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84
[2020-09-24 18:16:57,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:16:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49
[2020-09-24 18:16:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 18:16:57,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:16:57,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:16:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:57,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:57,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:57,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 18:16:57,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:57,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 18:16:57,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:57,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:16:57,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:16:57,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:16:57,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:16:57,538 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 18:16:57,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165323854]
[2020-09-24 18:16:57,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:16:57,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 18:16:57,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963398008]
[2020-09-24 18:16:57,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 18:16:57,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:16:57,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 18:16:57,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 18:16:57,543 INFO L87 Difference]: Start difference. First operand 183 states and 240 transitions. Second operand 3 states.
[2020-09-24 18:16:57,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:16:57,582 INFO L93 Difference]: Finished difference Result 479 states and 646 transitions.
[2020-09-24 18:16:57,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-24 18:16:57,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51
[2020-09-24 18:16:57,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:16:57,588 INFO L225 Difference]: With dead ends: 479
[2020-09-24 18:16:57,588 INFO L226 Difference]: Without dead ends: 325
[2020-09-24 18:16:57,592 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 18:16:57,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states.
[2020-09-24 18:16:57,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323.
[2020-09-24 18:16:57,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states.
[2020-09-24 18:16:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 426 transitions.
[2020-09-24 18:16:57,643 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 426 transitions. Word has length 51
[2020-09-24 18:16:57,643 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:16:57,643 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 426 transitions.
[2020-09-24 18:16:57,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 18:16:57,644 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 426 transitions.
[2020-09-24 18:16:57,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2020-09-24 18:16:57,649 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 18:16:57,649 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]
[2020-09-24 18:16:57,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 18:16:57,649 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:16:57,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:16:57,650 INFO L82 PathProgramCache]: Analyzing trace with hash -17356107, now seen corresponding path program 1 times
[2020-09-24 18:16:57,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:16:57,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931868365]
[2020-09-24 18:16:57,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:16:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:57,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:57,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:57,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58
[2020-09-24 18:16:57,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:57,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60
[2020-09-24 18:16:57,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:16:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49
[2020-09-24 18:16:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 18:16:57,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:16:57,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:16:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:57,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:57,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:57,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 18:16:57,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:57,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 18:16:57,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:57,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:16:57,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:16:57,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:16:57,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:16:57,762 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 18:16:57,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931868365]
[2020-09-24 18:16:57,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:16:57,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 18:16:57,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268249955]
[2020-09-24 18:16:57,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 18:16:57,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:16:57,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 18:16:57,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 18:16:57,765 INFO L87 Difference]: Start difference. First operand 323 states and 426 transitions. Second operand 3 states.
[2020-09-24 18:16:57,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:16:57,800 INFO L93 Difference]: Finished difference Result 399 states and 528 transitions.
[2020-09-24 18:16:57,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-24 18:16:57,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51
[2020-09-24 18:16:57,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:16:57,804 INFO L225 Difference]: With dead ends: 399
[2020-09-24 18:16:57,804 INFO L226 Difference]: Without dead ends: 397
[2020-09-24 18:16:57,806 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 18:16:57,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states.
[2020-09-24 18:16:57,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 323.
[2020-09-24 18:16:57,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states.
[2020-09-24 18:16:57,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 422 transitions.
[2020-09-24 18:16:57,834 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 422 transitions. Word has length 51
[2020-09-24 18:16:57,834 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:16:57,835 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 422 transitions.
[2020-09-24 18:16:57,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 18:16:57,835 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 422 transitions.
[2020-09-24 18:16:57,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-09-24 18:16:57,840 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 18:16:57,840 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]
[2020-09-24 18:16:57,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 18:16:57,841 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:16:57,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:16:57,841 INFO L82 PathProgramCache]: Analyzing trace with hash 802147488, now seen corresponding path program 1 times
[2020-09-24 18:16:57,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:16:57,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158685213]
[2020-09-24 18:16:57,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:16:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:57,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:57,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:57,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59
[2020-09-24 18:16:57,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:57,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71
[2020-09-24 18:16:57,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:16:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50
[2020-09-24 18:16:57,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 18:16:57,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:16:57,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:16:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:57,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:57,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:57,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 18:16:57,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:57,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 18:16:57,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:16:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:16:57,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:16:57,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:16:57,977 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 18:16:57,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158685213]
[2020-09-24 18:16:57,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:16:57,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 18:16:57,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525532305]
[2020-09-24 18:16:57,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 18:16:57,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:16:57,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 18:16:57,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 18:16:57,982 INFO L87 Difference]: Start difference. First operand 323 states and 422 transitions. Second operand 3 states.
[2020-09-24 18:16:58,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:16:58,001 INFO L93 Difference]: Finished difference Result 395 states and 516 transitions.
[2020-09-24 18:16:58,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-24 18:16:58,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52
[2020-09-24 18:16:58,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:16:58,005 INFO L225 Difference]: With dead ends: 395
[2020-09-24 18:16:58,005 INFO L226 Difference]: Without dead ends: 393
[2020-09-24 18:16:58,006 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 18:16:58,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states.
[2020-09-24 18:16:58,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 323.
[2020-09-24 18:16:58,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states.
[2020-09-24 18:16:58,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 418 transitions.
[2020-09-24 18:16:58,018 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 418 transitions. Word has length 52
[2020-09-24 18:16:58,018 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:16:58,018 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 418 transitions.
[2020-09-24 18:16:58,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 18:16:58,019 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 418 transitions.
[2020-09-24 18:16:58,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-09-24 18:16:58,020 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 18:16:58,020 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]
[2020-09-24 18:16:58,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-24 18:16:58,020 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:16:58,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:16:58,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1582250918, now seen corresponding path program 1 times
[2020-09-24 18:16:58,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:16:58,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724185590]
[2020-09-24 18:16:58,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:16:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:58,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:58,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:58,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59
[2020-09-24 18:16:58,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:58,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41
[2020-09-24 18:16:58,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:58,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:16:58,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50
[2020-09-24 18:16:58,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 18:16:58,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:16:58,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:16:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:58,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:58,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:58,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 18:16:58,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:58,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 18:16:58,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:58,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:16:58,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:16:58,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:16:58,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:16:58,102 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 18:16:58,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724185590]
[2020-09-24 18:16:58,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:16:58,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 18:16:58,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447178919]
[2020-09-24 18:16:58,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 18:16:58,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:16:58,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 18:16:58,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 18:16:58,105 INFO L87 Difference]: Start difference. First operand 323 states and 418 transitions. Second operand 3 states.
[2020-09-24 18:16:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:16:58,129 INFO L93 Difference]: Finished difference Result 887 states and 1164 transitions.
[2020-09-24 18:16:58,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-24 18:16:58,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52
[2020-09-24 18:16:58,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:16:58,133 INFO L225 Difference]: With dead ends: 887
[2020-09-24 18:16:58,133 INFO L226 Difference]: Without dead ends: 593
[2020-09-24 18:16:58,135 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 18:16:58,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states.
[2020-09-24 18:16:58,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591.
[2020-09-24 18:16:58,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states.
[2020-09-24 18:16:58,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 758 transitions.
[2020-09-24 18:16:58,154 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 758 transitions. Word has length 52
[2020-09-24 18:16:58,155 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:16:58,155 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 758 transitions.
[2020-09-24 18:16:58,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 18:16:58,155 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 758 transitions.
[2020-09-24 18:16:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2020-09-24 18:16:58,156 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 18:16:58,157 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]
[2020-09-24 18:16:58,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-09-24 18:16:58,157 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:16:58,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:16:58,158 INFO L82 PathProgramCache]: Analyzing trace with hash 436955529, now seen corresponding path program 1 times
[2020-09-24 18:16:58,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:16:58,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827233851]
[2020-09-24 18:16:58,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:16:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:58,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:58,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:58,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60
[2020-09-24 18:16:58,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:58,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34
[2020-09-24 18:16:58,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:58,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:16:58,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51
[2020-09-24 18:16:58,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 18:16:58,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:16:58,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:16:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:58,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:58,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:58,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 18:16:58,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:58,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 18:16:58,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:16:58,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:16:58,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:16:58,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:16:58,233 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 18:16:58,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827233851]
[2020-09-24 18:16:58,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:16:58,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 18:16:58,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079491156]
[2020-09-24 18:16:58,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 18:16:58,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:16:58,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 18:16:58,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 18:16:58,237 INFO L87 Difference]: Start difference. First operand 591 states and 758 transitions. Second operand 3 states.
[2020-09-24 18:16:58,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:16:58,262 INFO L93 Difference]: Finished difference Result 715 states and 912 transitions.
[2020-09-24 18:16:58,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-24 18:16:58,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53
[2020-09-24 18:16:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:16:58,267 INFO L225 Difference]: With dead ends: 715
[2020-09-24 18:16:58,267 INFO L226 Difference]: Without dead ends: 713
[2020-09-24 18:16:58,268 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 18:16:58,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states.
[2020-09-24 18:16:58,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 591.
[2020-09-24 18:16:58,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states.
[2020-09-24 18:16:58,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 750 transitions.
[2020-09-24 18:16:58,288 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 750 transitions. Word has length 53
[2020-09-24 18:16:58,288 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:16:58,289 INFO L479 AbstractCegarLoop]: Abstraction has 591 states and 750 transitions.
[2020-09-24 18:16:58,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 18:16:58,289 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 750 transitions.
[2020-09-24 18:16:58,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2020-09-24 18:16:58,290 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 18:16:58,290 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]
[2020-09-24 18:16:58,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-09-24 18:16:58,291 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:16:58,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:16:58,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1804891768, now seen corresponding path program 1 times
[2020-09-24 18:16:58,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:16:58,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604247799]
[2020-09-24 18:16:58,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:16:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:58,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:58,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:58,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60
[2020-09-24 18:16:58,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:58,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43
[2020-09-24 18:16:58,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:58,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:16:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51
[2020-09-24 18:16:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 18:16:58,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:16:58,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:16:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:58,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:58,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:58,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 18:16:58,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:58,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 18:16:58,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:16:58,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:16:58,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:16:58,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:16:58,388 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 18:16:58,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604247799]
[2020-09-24 18:16:58,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:16:58,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 18:16:58,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806449796]
[2020-09-24 18:16:58,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 18:16:58,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:16:58,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 18:16:58,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 18:16:58,390 INFO L87 Difference]: Start difference. First operand 591 states and 750 transitions. Second operand 3 states.
[2020-09-24 18:16:58,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:16:58,421 INFO L93 Difference]: Finished difference Result 1667 states and 2128 transitions.
[2020-09-24 18:16:58,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-24 18:16:58,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53
[2020-09-24 18:16:58,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:16:58,427 INFO L225 Difference]: With dead ends: 1667
[2020-09-24 18:16:58,428 INFO L226 Difference]: Without dead ends: 1105
[2020-09-24 18:16:58,429 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 18:16:58,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states.
[2020-09-24 18:16:58,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1103.
[2020-09-24 18:16:58,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states.
[2020-09-24 18:16:58,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1374 transitions.
[2020-09-24 18:16:58,459 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1374 transitions. Word has length 53
[2020-09-24 18:16:58,459 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:16:58,459 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1374 transitions.
[2020-09-24 18:16:58,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 18:16:58,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1374 transitions.
[2020-09-24 18:16:58,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2020-09-24 18:16:58,461 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 18:16:58,461 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]
[2020-09-24 18:16:58,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-09-24 18:16:58,461 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:16:58,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:16:58,462 INFO L82 PathProgramCache]: Analyzing trace with hash 2000907060, now seen corresponding path program 1 times
[2020-09-24 18:16:58,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:16:58,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282206132]
[2020-09-24 18:16:58,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:16:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:58,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:58,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:58,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61
[2020-09-24 18:16:58,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:58,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41
[2020-09-24 18:16:58,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:58,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:16:58,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52
[2020-09-24 18:16:58,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 18:16:58,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:16:58,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:16:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:58,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:58,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:58,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 18:16:58,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:58,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 18:16:58,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:16:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:16:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:16:58,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:16:58,539 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 18:16:58,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282206132]
[2020-09-24 18:16:58,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:16:58,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 18:16:58,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946435206]
[2020-09-24 18:16:58,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 18:16:58,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:16:58,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 18:16:58,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 18:16:58,542 INFO L87 Difference]: Start difference. First operand 1103 states and 1374 transitions. Second operand 3 states.
[2020-09-24 18:16:58,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:16:58,567 INFO L93 Difference]: Finished difference Result 1315 states and 1616 transitions.
[2020-09-24 18:16:58,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-24 18:16:58,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54
[2020-09-24 18:16:58,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:16:58,575 INFO L225 Difference]: With dead ends: 1315
[2020-09-24 18:16:58,575 INFO L226 Difference]: Without dead ends: 1313
[2020-09-24 18:16:58,576 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 18:16:58,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states.
[2020-09-24 18:16:58,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1103.
[2020-09-24 18:16:58,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states.
[2020-09-24 18:16:58,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1358 transitions.
[2020-09-24 18:16:58,608 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1358 transitions. Word has length 54
[2020-09-24 18:16:58,608 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:16:58,608 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1358 transitions.
[2020-09-24 18:16:58,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 18:16:58,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1358 transitions.
[2020-09-24 18:16:58,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2020-09-24 18:16:58,610 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 18:16:58,610 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]
[2020-09-24 18:16:58,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2020-09-24 18:16:58,610 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:16:58,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:16:58,611 INFO L82 PathProgramCache]: Analyzing trace with hash -116823154, now seen corresponding path program 1 times
[2020-09-24 18:16:58,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:16:58,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712490146]
[2020-09-24 18:16:58,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:16:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:58,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:58,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:58,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61
[2020-09-24 18:16:58,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:58,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40
[2020-09-24 18:16:58,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:58,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:16:58,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52
[2020-09-24 18:16:58,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 18:16:58,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:16:58,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:16:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:58,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:58,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:58,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 18:16:58,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:58,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 18:16:58,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:58,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:16:58,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:16:58,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:16:58,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 18:16:58,686 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 18:16:58,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712490146]
[2020-09-24 18:16:58,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:16:58,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 18:16:58,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824351710]
[2020-09-24 18:16:58,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 18:16:58,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:16:58,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 18:16:58,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 18:16:58,689 INFO L87 Difference]: Start difference. First operand 1103 states and 1358 transitions. Second operand 3 states.
[2020-09-24 18:16:58,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:16:58,737 INFO L93 Difference]: Finished difference Result 3153 states and 3887 transitions.
[2020-09-24 18:16:58,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-24 18:16:58,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54
[2020-09-24 18:16:58,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:16:58,744 INFO L225 Difference]: With dead ends: 3153
[2020-09-24 18:16:58,745 INFO L226 Difference]: Without dead ends: 1103
[2020-09-24 18:16:58,750 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 18:16:58,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states.
[2020-09-24 18:16:58,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1103.
[2020-09-24 18:16:58,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states.
[2020-09-24 18:16:58,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1294 transitions.
[2020-09-24 18:16:58,790 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1294 transitions. Word has length 54
[2020-09-24 18:16:58,790 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:16:58,790 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1294 transitions.
[2020-09-24 18:16:58,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 18:16:58,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1294 transitions.
[2020-09-24 18:16:58,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2020-09-24 18:16:58,793 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 18:16:58,793 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]
[2020-09-24 18:16:58,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2020-09-24 18:16:58,793 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:16:58,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:16:58,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1056202659, now seen corresponding path program 1 times
[2020-09-24 18:16:58,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:16:58,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414040715]
[2020-09-24 18:16:58,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:16:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:58,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:58,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:58,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62
[2020-09-24 18:16:58,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:58,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46
[2020-09-24 18:16:58,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:58,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 18:16:58,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53
[2020-09-24 18:16:58,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 18:16:58,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:16:58,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 18:16:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 18:16:58,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 18:16:58,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 18:16:58,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 18:16:58,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 18:16:58,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 18:16:58,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 18:16:58,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 18:16:58,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 18:16:58,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 18:16:58,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 18:16:58,885 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 18:16:58,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414040715]
[2020-09-24 18:16:58,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 18:16:58,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 18:16:58,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426607781]
[2020-09-24 18:16:58,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 18:16:58,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 18:16:58,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 18:16:58,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 18:16:58,888 INFO L87 Difference]: Start difference. First operand 1103 states and 1294 transitions. Second operand 3 states.
[2020-09-24 18:16:58,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 18:16:58,907 INFO L93 Difference]: Finished difference Result 1103 states and 1294 transitions.
[2020-09-24 18:16:58,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-24 18:16:58,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55
[2020-09-24 18:16:58,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 18:16:58,909 INFO L225 Difference]: With dead ends: 1103
[2020-09-24 18:16:58,909 INFO L226 Difference]: Without dead ends: 0
[2020-09-24 18:16:58,911 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 18:16:58,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-24 18:16:58,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-24 18:16:58,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-24 18:16:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-24 18:16:58,913 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55
[2020-09-24 18:16:58,913 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 18:16:58,913 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-24 18:16:58,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 18:16:58,914 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-24 18:16:58,914 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-24 18:16:58,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2020-09-24 18:16:58,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-24 18:16:58,950 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-24 18:16:58,951 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-24 18:16:58,951 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-24 18:16:58,951 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-24 18:16:58,951 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-24 18:16:58,951 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-24 18:16:58,952 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed.
[2020-09-24 18:16:58,952 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 107) no Hoare annotation was computed.
[2020-09-24 18:16:58,952 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed.
[2020-09-24 18:16:58,952 INFO L268 CegarLoopResult]: For program point L77-1(lines 27 102) no Hoare annotation was computed.
[2020-09-24 18:16:58,953 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed.
[2020-09-24 18:16:58,953 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed.
[2020-09-24 18:16:58,953 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed.
[2020-09-24 18:16:58,953 INFO L268 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed.
[2020-09-24 18:16:58,953 INFO L268 CegarLoopResult]: For program point L28-2(line 28) no Hoare annotation was computed.
[2020-09-24 18:16:58,954 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed.
[2020-09-24 18:16:58,954 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed.
[2020-09-24 18:16:58,954 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed.
[2020-09-24 18:16:58,954 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed.
[2020-09-24 18:16:58,954 INFO L271 CegarLoopResult]: At program point L103(lines 5 107) the Hoare annotation is: true
[2020-09-24 18:16:58,955 INFO L268 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed.
[2020-09-24 18:16:58,955 INFO L268 CegarLoopResult]: For program point L62-1(lines 27 102) no Hoare annotation was computed.
[2020-09-24 18:16:58,955 INFO L268 CegarLoopResult]: For program point L87-1(lines 27 102) no Hoare annotation was computed.
[2020-09-24 18:16:58,955 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed.
[2020-09-24 18:16:58,956 INFO L268 CegarLoopResult]: For program point L54-1(lines 27 102) no Hoare annotation was computed.
[2020-09-24 18:16:58,956 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed.
[2020-09-24 18:16:58,956 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed.
[2020-09-24 18:16:58,956 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed.
[2020-09-24 18:16:58,956 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed.
[2020-09-24 18:16:58,957 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed.
[2020-09-24 18:16:58,957 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 107) no Hoare annotation was computed.
[2020-09-24 18:16:58,957 INFO L268 CegarLoopResult]: For program point L46-2(lines 27 102) no Hoare annotation was computed.
[2020-09-24 18:16:58,957 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed.
[2020-09-24 18:16:58,957 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed.
[2020-09-24 18:16:58,957 INFO L268 CegarLoopResult]: For program point L63(line 63) no Hoare annotation was computed.
[2020-09-24 18:16:58,958 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 107) the Hoare annotation is: true
[2020-09-24 18:16:58,958 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed.
[2020-09-24 18:16:58,958 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed.
[2020-09-24 18:16:58,958 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed.
[2020-09-24 18:16:58,958 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed.
[2020-09-24 18:16:58,959 INFO L268 CegarLoopResult]: For program point L72-1(lines 27 102) no Hoare annotation was computed.
[2020-09-24 18:16:58,959 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed.
[2020-09-24 18:16:58,959 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed.
[2020-09-24 18:16:58,959 INFO L271 CegarLoopResult]: At program point L97-1(lines 27 102) the Hoare annotation is: true
[2020-09-24 18:16:58,959 INFO L268 CegarLoopResult]: For program point L89(line 89) no Hoare annotation was computed.
[2020-09-24 18:16:58,959 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed.
[2020-09-24 18:16:58,959 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed.
[2020-09-24 18:16:58,960 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed.
[2020-09-24 18:16:58,960 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed.
[2020-09-24 18:16:58,960 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed.
[2020-09-24 18:16:58,960 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed.
[2020-09-24 18:16:58,961 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed.
[2020-09-24 18:16:58,961 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed.
[2020-09-24 18:16:58,961 INFO L264 CegarLoopResult]: At program point L98-1(lines 5 107) the Hoare annotation is: false
[2020-09-24 18:16:58,961 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed.
[2020-09-24 18:16:58,962 INFO L268 CegarLoopResult]: For program point L82-1(lines 27 102) no Hoare annotation was computed.
[2020-09-24 18:16:58,962 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed.
[2020-09-24 18:16:58,962 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed.
[2020-09-24 18:16:58,962 INFO L268 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed.
[2020-09-24 18:16:58,962 INFO L268 CegarLoopResult]: For program point L66-1(lines 27 102) no Hoare annotation was computed.
[2020-09-24 18:16:58,963 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed.
[2020-09-24 18:16:58,963 INFO L268 CegarLoopResult]: For program point L58-1(lines 27 102) no Hoare annotation was computed.
[2020-09-24 18:16:58,963 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed.
[2020-09-24 18:16:58,963 INFO L268 CegarLoopResult]: For program point L50-1(lines 27 102) no Hoare annotation was computed.
[2020-09-24 18:16:58,963 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed.
[2020-09-24 18:16:58,964 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed.
[2020-09-24 18:16:58,964 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed.
[2020-09-24 18:16:58,964 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed.
[2020-09-24 18:16:58,964 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed.
[2020-09-24 18:16:58,964 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed.
[2020-09-24 18:16:58,965 INFO L268 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed.
[2020-09-24 18:16:58,965 INFO L268 CegarLoopResult]: For program point L92-1(lines 27 102) no Hoare annotation was computed.
[2020-09-24 18:16:58,965 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed.
[2020-09-24 18:16:58,965 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed.
[2020-09-24 18:16:58,965 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed.
[2020-09-24 18:16:58,966 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed.
[2020-09-24 18:16:58,966 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed.
[2020-09-24 18:16:58,966 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed.
[2020-09-24 18:16:58,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:16:58 BoogieIcfgContainer
[2020-09-24 18:16:58,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 18:16:58,987 INFO L168 Benchmark]: Toolchain (without parser) took 3784.28 ms. Allocated memory was 140.5 MB in the beginning and 245.4 MB in the end (delta: 104.9 MB). Free memory was 103.5 MB in the beginning and 105.9 MB in the end (delta: -2.4 MB). Peak memory consumption was 102.4 MB. Max. memory is 7.1 GB.
[2020-09-24 18:16:58,988 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-24 18:16:58,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.24 ms. Allocated memory is still 140.5 MB. Free memory was 102.8 MB in the beginning and 92.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB.
[2020-09-24 18:16:58,990 INFO L168 Benchmark]: Boogie Preprocessor took 123.61 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 92.8 MB in the beginning and 180.9 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB.
[2020-09-24 18:16:58,991 INFO L168 Benchmark]: RCFGBuilder took 464.85 ms. Allocated memory is still 202.9 MB. Free memory was 180.9 MB in the beginning and 162.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB.
[2020-09-24 18:16:58,991 INFO L168 Benchmark]: TraceAbstraction took 2876.65 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 162.0 MB in the beginning and 105.9 MB in the end (delta: 56.1 MB). Peak memory consumption was 98.6 MB. Max. memory is 7.1 GB.
[2020-09-24 18:16:58,995 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 309.24 ms. Allocated memory is still 140.5 MB. Free memory was 102.8 MB in the beginning and 92.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 123.61 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 92.8 MB in the beginning and 180.9 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 464.85 ms. Allocated memory is still 202.9 MB. Free memory was 180.9 MB in the beginning and 162.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 2876.65 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 162.0 MB in the beginning and 105.9 MB in the end (delta: 56.1 MB). Peak memory consumption was 98.6 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 105]: 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: 5]: Loop Invariant
Derived loop invariant: 0
- InvariantResult [Line: 5]: Loop Invariant
Derived loop invariant: 1
- InvariantResult [Line: 27]: Loop Invariant
Derived loop invariant: 1
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1351 SDtfs, 477 SDslu, 950 SDs, 0 SdLazy, 59 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1103occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 509 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 73 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 624 NumberOfCodeBlocks, 624 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 612 ConstructedInterpolants, 0 QuantifiedInterpolants, 39212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...