/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/gcd01-1.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 07:43:27,703 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 07:43:27,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 07:43:27,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 07:43:27,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 07:43:27,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 07:43:27,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 07:43:27,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 07:43:27,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 07:43:27,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 07:43:27,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 07:43:27,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 07:43:27,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 07:43:27,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 07:43:27,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 07:43:27,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 07:43:27,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 07:43:27,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 07:43:27,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 07:43:27,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 07:43:27,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 07:43:27,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 07:43:27,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 07:43:27,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 07:43:27,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 07:43:27,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 07:43:27,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 07:43:27,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 07:43:27,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 07:43:27,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 07:43:27,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 07:43:27,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 07:43:27,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 07:43:27,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 07:43:27,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 07:43:27,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 07:43:27,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 07:43:27,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 07:43:27,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 07:43:27,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 07:43:27,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 07:43:27,841 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
[2020-09-25 07:43:27,876 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 07:43:27,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 07:43:27,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 07:43:27,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 07:43:27,878 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 07:43:27,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 07:43:27,878 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 07:43:27,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 07:43:27,879 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 07:43:27,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 07:43:27,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 07:43:27,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 07:43:27,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 07:43:27,880 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 07:43:27,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 07:43:27,880 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 07:43:27,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 07:43:27,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 07:43:27,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 07:43:27,881 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 07:43:27,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 07:43:27,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 07:43:27,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 07:43:27,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 07:43:27,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 07:43:27,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 07:43:27,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 07:43:27,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 07:43:27,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 07:43:27,883 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true;
[2020-09-25 07:43:28,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 07:43:28,356 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 07:43:28,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 07:43:28,364 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 07:43:28,364 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 07:43:28,365 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/gcd01-1.c
[2020-09-25 07:43:28,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83d21b687/d82edc11adf34c3c859e8c726703c026/FLAG20270c1c9
[2020-09-25 07:43:28,985 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 07:43:28,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/gcd01-1.c
[2020-09-25 07:43:28,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83d21b687/d82edc11adf34c3c859e8c726703c026/FLAG20270c1c9
[2020-09-25 07:43:29,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83d21b687/d82edc11adf34c3c859e8c726703c026
[2020-09-25 07:43:29,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 07:43:29,346 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 07:43:29,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 07:43:29,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 07:43:29,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 07:43:29,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:43:29" (1/1) ...
[2020-09-25 07:43:29,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:29, skipping insertion in model container
[2020-09-25 07:43:29,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:43:29" (1/1) ...
[2020-09-25 07:43:29,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 07:43:29,393 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 07:43:29,597 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 07:43:29,603 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 07:43:29,622 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 07:43:29,640 INFO L208 MainTranslator]: Completed translation
[2020-09-25 07:43:29,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:29 WrapperNode
[2020-09-25 07:43:29,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 07:43:29,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 07:43:29,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 07:43:29,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 07:43:29,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:29" (1/1) ...
[2020-09-25 07:43:29,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:29" (1/1) ...
[2020-09-25 07:43:29,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:29" (1/1) ...
[2020-09-25 07:43:29,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:29" (1/1) ...
[2020-09-25 07:43:29,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:29" (1/1) ...
[2020-09-25 07:43:29,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:29" (1/1) ...
[2020-09-25 07:43:29,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:29" (1/1) ...
[2020-09-25 07:43:29,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 07:43:29,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 07:43:29,675 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 07:43:29,676 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 07:43:29,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:29" (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
[2020-09-25 07:43:29,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 07:43:29,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 07:43:29,847 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd
[2020-09-25 07:43:29,847 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 07:43:29,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 07:43:29,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-25 07:43:29,847 INFO L130 BoogieDeclarations]: Found specification of procedure gcd
[2020-09-25 07:43:29,847 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 07:43:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 07:43:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 07:43:30,108 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 07:43:30,108 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-25 07:43:30,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:43:30 BoogieIcfgContainer
[2020-09-25 07:43:30,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 07:43:30,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 07:43:30,117 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 07:43:30,122 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 07:43:30,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:43:29" (1/3) ...
[2020-09-25 07:43:30,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e08caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:43:30, skipping insertion in model container
[2020-09-25 07:43:30,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:29" (2/3) ...
[2020-09-25 07:43:30,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e08caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:43:30, skipping insertion in model container
[2020-09-25 07:43:30,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:43:30" (3/3) ...
[2020-09-25 07:43:30,127 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd01-1.c
[2020-09-25 07:43:30,142 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 07:43:30,154 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 07:43:30,181 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 07:43:30,216 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 07:43:30,216 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 07:43:30,216 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 07:43:30,216 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 07:43:30,217 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 07:43:30,217 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 07:43:30,217 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 07:43:30,217 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 07:43:30,256 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states.
[2020-09-25 07:43:30,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-09-25 07:43:30,266 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 07:43:30,268 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]
[2020-09-25 07:43:30,268 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 07:43:30,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 07:43:30,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1470222128, now seen corresponding path program 1 times
[2020-09-25 07:43:30,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 07:43:30,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810421446]
[2020-09-25 07:43:30,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 07:43:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:30,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:30,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:30,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:30,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33
[2020-09-25 07:43:30,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 07:43:30,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374
[2020-09-25 07:43:30,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:30,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:30,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-25 07:43:30,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-09-25 07:43:30,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-09-25 07:43:30,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-09-25 07:43:30,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 07:43:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:30,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:30,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:30,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 07:43:30,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:30,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-25 07:43:30,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:30,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 07:43:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 07:43:30,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:30,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 07:43:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:30,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:30,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:30,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 07:43:30,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:30,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47
[2020-09-25 07:43:30,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:30,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-25 07:43:30,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:30,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 07:43:30,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:31,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 07:43:31,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810421446]
[2020-09-25 07:43:31,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 07:43:31,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-25 07:43:31,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049924871]
[2020-09-25 07:43:31,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 07:43:31,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 07:43:31,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 07:43:31,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2020-09-25 07:43:31,099 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states.
[2020-09-25 07:43:31,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 07:43:31,318 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions.
[2020-09-25 07:43:31,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 07:43:31,321 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24
[2020-09-25 07:43:31,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 07:43:31,334 INFO L225 Difference]: With dead ends: 58
[2020-09-25 07:43:31,334 INFO L226 Difference]: Without dead ends: 38
[2020-09-25 07:43:31,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-09-25 07:43:31,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2020-09-25 07:43:31,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38.
[2020-09-25 07:43:31,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states.
[2020-09-25 07:43:31,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions.
[2020-09-25 07:43:31,399 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 24
[2020-09-25 07:43:31,400 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 07:43:31,400 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions.
[2020-09-25 07:43:31,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 07:43:31,400 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions.
[2020-09-25 07:43:31,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-09-25 07:43:31,403 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 07:43:31,404 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]
[2020-09-25 07:43:31,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 07:43:31,404 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 07:43:31,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 07:43:31,405 INFO L82 PathProgramCache]: Analyzing trace with hash 831268307, now seen corresponding path program 1 times
[2020-09-25 07:43:31,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 07:43:31,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720812218]
[2020-09-25 07:43:31,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 07:43:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:31,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:31,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:31,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:31,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:31,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-25 07:43:31,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 07:43:31,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451
[2020-09-25 07:43:31,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:31,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:31,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-25 07:43:31,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-09-25 07:43:31,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13
[2020-09-25 07:43:31,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:31,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 07:43:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:31,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:31,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:31,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 07:43:31,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:31,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-25 07:43:31,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:31,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:31,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 07:43:31,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:31,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 07:43:31,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 07:43:31,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 07:43:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:31,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:31,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:31,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 07:43:31,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:31,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42
[2020-09-25 07:43:31,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:31,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:31,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 07:43:31,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:31,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-09-25 07:43:31,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:32,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 07:43:32,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720812218]
[2020-09-25 07:43:32,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 07:43:32,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-09-25 07:43:32,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762934060]
[2020-09-25 07:43:32,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-25 07:43:32,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 07:43:32,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-25 07:43:32,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-09-25 07:43:32,015 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 7 states.
[2020-09-25 07:43:32,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 07:43:32,258 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions.
[2020-09-25 07:43:32,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-09-25 07:43:32,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25
[2020-09-25 07:43:32,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 07:43:32,261 INFO L225 Difference]: With dead ends: 46
[2020-09-25 07:43:32,261 INFO L226 Difference]: Without dead ends: 40
[2020-09-25 07:43:32,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2020-09-25 07:43:32,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2020-09-25 07:43:32,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38.
[2020-09-25 07:43:32,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states.
[2020-09-25 07:43:32,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions.
[2020-09-25 07:43:32,272 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 25
[2020-09-25 07:43:32,272 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 07:43:32,272 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions.
[2020-09-25 07:43:32,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-25 07:43:32,273 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions.
[2020-09-25 07:43:32,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2020-09-25 07:43:32,274 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 07:43:32,275 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 07:43:32,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 07:43:32,275 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 07:43:32,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 07:43:32,276 INFO L82 PathProgramCache]: Analyzing trace with hash -852904039, now seen corresponding path program 1 times
[2020-09-25 07:43:32,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 07:43:32,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862373338]
[2020-09-25 07:43:32,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 07:43:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:32,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:32,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:32,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:32,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:32,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46
[2020-09-25 07:43:32,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 07:43:32,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383
[2020-09-25 07:43:32,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:32,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-25 07:43:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-09-25 07:43:32,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25
[2020-09-25 07:43:32,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:32,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 07:43:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:32,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:32,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:32,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 07:43:32,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:32,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-25 07:43:32,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:32,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 07:43:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:32,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 07:43:32,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:32,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 07:43:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:32,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:32,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:32,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:32,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-25 07:43:32,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 07:43:32,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106
[2020-09-25 07:43:32,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:32,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:32,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-25 07:43:32,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:32,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22
[2020-09-25 07:43:32,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:32,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-25 07:43:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:32,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:32,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:32,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 07:43:32,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:32,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18
[2020-09-25 07:43:32,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:32,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:32,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 07:43:32,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:32,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 07:43:32,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 07:43:32,951 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2020-09-25 07:43:32,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862373338]
[2020-09-25 07:43:32,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 07:43:32,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2020-09-25 07:43:32,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486449493]
[2020-09-25 07:43:32,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-25 07:43:32,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 07:43:32,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-25 07:43:32,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2020-09-25 07:43:32,955 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 9 states.
[2020-09-25 07:43:33,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 07:43:33,181 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions.
[2020-09-25 07:43:33,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2020-09-25 07:43:33,182 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35
[2020-09-25 07:43:33,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 07:43:33,196 INFO L225 Difference]: With dead ends: 56
[2020-09-25 07:43:33,196 INFO L226 Difference]: Without dead ends: 50
[2020-09-25 07:43:33,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156
[2020-09-25 07:43:33,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2020-09-25 07:43:33,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43.
[2020-09-25 07:43:33,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states.
[2020-09-25 07:43:33,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions.
[2020-09-25 07:43:33,210 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 35
[2020-09-25 07:43:33,210 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 07:43:33,210 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions.
[2020-09-25 07:43:33,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-25 07:43:33,210 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions.
[2020-09-25 07:43:33,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2020-09-25 07:43:33,215 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 07:43:33,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 07:43:33,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 07:43:33,216 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 07:43:33,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 07:43:33,216 INFO L82 PathProgramCache]: Analyzing trace with hash 2030561919, now seen corresponding path program 1 times
[2020-09-25 07:43:33,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 07:43:33,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089631449]
[2020-09-25 07:43:33,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 07:43:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:33,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:33,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:33,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:33,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:33,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46
[2020-09-25 07:43:33,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 07:43:33,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341
[2020-09-25 07:43:33,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:33,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:33,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-25 07:43:33,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-09-25 07:43:33,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25
[2020-09-25 07:43:33,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:33,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 07:43:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:33,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:33,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 07:43:33,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:33,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 07:43:33,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:33,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:33,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 07:43:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 07:43:33,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:33,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 07:43:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:33,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:33,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:33,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:33,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-25 07:43:33,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 07:43:33,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121
[2020-09-25 07:43:33,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:33,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-25 07:43:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:33,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22
[2020-09-25 07:43:33,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:33,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-25 07:43:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:33,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:33,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:33,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 07:43:33,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:33,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-09-25 07:43:33,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:33,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 07:43:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 07:43:33,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:33,830 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-25 07:43:33,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089631449]
[2020-09-25 07:43:33,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 07:43:33,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2020-09-25 07:43:33,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197752027]
[2020-09-25 07:43:33,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-25 07:43:33,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 07:43:33,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-25 07:43:33,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2020-09-25 07:43:33,833 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 9 states.
[2020-09-25 07:43:33,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 07:43:33,994 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions.
[2020-09-25 07:43:33,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-09-25 07:43:33,995 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35
[2020-09-25 07:43:33,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 07:43:33,997 INFO L225 Difference]: With dead ends: 58
[2020-09-25 07:43:33,997 INFO L226 Difference]: Without dead ends: 52
[2020-09-25 07:43:33,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132
[2020-09-25 07:43:33,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2020-09-25 07:43:34,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50.
[2020-09-25 07:43:34,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states.
[2020-09-25 07:43:34,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions.
[2020-09-25 07:43:34,008 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 35
[2020-09-25 07:43:34,009 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 07:43:34,009 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions.
[2020-09-25 07:43:34,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-25 07:43:34,009 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions.
[2020-09-25 07:43:34,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2020-09-25 07:43:34,011 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 07:43:34,011 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 07:43:34,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-25 07:43:34,011 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 07:43:34,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 07:43:34,012 INFO L82 PathProgramCache]: Analyzing trace with hash -2122258312, now seen corresponding path program 1 times
[2020-09-25 07:43:34,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 07:43:34,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363014260]
[2020-09-25 07:43:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 07:43:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:34,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:34,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:34,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:34,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:34,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:34,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:34,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47
[2020-09-25 07:43:34,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-25 07:43:34,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689
[2020-09-25 07:43:34,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:34,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:34,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-09-25 07:43:34,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-09-25 07:43:34,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26
[2020-09-25 07:43:34,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:34,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 07:43:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:34,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:34,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:34,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 07:43:34,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:34,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-25 07:43:34,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:34,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 07:43:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:34,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 07:43:34,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:34,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 07:43:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:34,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:34,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:34,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26
[2020-09-25 07:43:34,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:34,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77
[2020-09-25 07:43:34,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:34,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:34,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-25 07:43:34,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:34,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-09-25 07:43:34,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:34,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-25 07:43:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:34,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:34,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:34,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 07:43:34,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:34,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30
[2020-09-25 07:43:34,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:34,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:34,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 07:43:34,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:34,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-09-25 07:43:34,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:34,899 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2020-09-25 07:43:34,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363014260]
[2020-09-25 07:43:34,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 07:43:34,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-09-25 07:43:34,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072672671]
[2020-09-25 07:43:34,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-25 07:43:34,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 07:43:34,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-25 07:43:34,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-09-25 07:43:34,902 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 7 states.
[2020-09-25 07:43:35,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 07:43:35,035 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions.
[2020-09-25 07:43:35,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2020-09-25 07:43:35,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36
[2020-09-25 07:43:35,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 07:43:35,038 INFO L225 Difference]: With dead ends: 61
[2020-09-25 07:43:35,038 INFO L226 Difference]: Without dead ends: 55
[2020-09-25 07:43:35,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110
[2020-09-25 07:43:35,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2020-09-25 07:43:35,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48.
[2020-09-25 07:43:35,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states.
[2020-09-25 07:43:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions.
[2020-09-25 07:43:35,047 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 36
[2020-09-25 07:43:35,047 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 07:43:35,048 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions.
[2020-09-25 07:43:35,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-25 07:43:35,048 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions.
[2020-09-25 07:43:35,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2020-09-25 07:43:35,049 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 07:43:35,050 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 07:43:35,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-25 07:43:35,050 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 07:43:35,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 07:43:35,051 INFO L82 PathProgramCache]: Analyzing trace with hash 404002040, now seen corresponding path program 1 times
[2020-09-25 07:43:35,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 07:43:35,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027834357]
[2020-09-25 07:43:35,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 07:43:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:35,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:35,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:35,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:35,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:35,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:36,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:36,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47
[2020-09-25 07:43:36,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-09-25 07:43:36,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1597
[2020-09-25 07:43:36,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:36,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:36,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11
[2020-09-25 07:43:36,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-09-25 07:43:36,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26
[2020-09-25 07:43:36,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:36,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 07:43:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:36,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:36,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:36,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 07:43:36,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:36,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-25 07:43:36,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:36,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:36,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 07:43:36,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:36,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 07:43:36,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:36,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 07:43:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:36,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:36,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26
[2020-09-25 07:43:36,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:36,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100
[2020-09-25 07:43:36,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:36,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:36,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-09-25 07:43:36,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:36,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-09-25 07:43:36,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:36,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-25 07:43:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:36,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:36,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:36,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 07:43:36,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:36,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40
[2020-09-25 07:43:36,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:36,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:36,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-25 07:43:36,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:36,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-09-25 07:43:36,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2020-09-25 07:43:36,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027834357]
[2020-09-25 07:43:36,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 07:43:36,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-09-25 07:43:36,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132958737]
[2020-09-25 07:43:36,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-25 07:43:36,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 07:43:36,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-25 07:43:36,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90
[2020-09-25 07:43:36,909 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 10 states.
[2020-09-25 07:43:37,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 07:43:37,111 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions.
[2020-09-25 07:43:37,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2020-09-25 07:43:37,112 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36
[2020-09-25 07:43:37,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 07:43:37,113 INFO L225 Difference]: With dead ends: 61
[2020-09-25 07:43:37,113 INFO L226 Difference]: Without dead ends: 55
[2020-09-25 07:43:37,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240
[2020-09-25 07:43:37,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2020-09-25 07:43:37,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48.
[2020-09-25 07:43:37,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states.
[2020-09-25 07:43:37,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions.
[2020-09-25 07:43:37,123 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 36
[2020-09-25 07:43:37,123 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 07:43:37,123 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions.
[2020-09-25 07:43:37,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-25 07:43:37,124 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions.
[2020-09-25 07:43:37,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-09-25 07:43:37,126 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 07:43:37,126 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 07:43:37,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-25 07:43:37,127 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 07:43:37,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 07:43:37,127 INFO L82 PathProgramCache]: Analyzing trace with hash 594320754, now seen corresponding path program 1 times
[2020-09-25 07:43:37,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 07:43:37,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17871807]
[2020-09-25 07:43:37,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 07:43:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:37,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:37,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:37,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:37,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59
[2020-09-25 07:43:37,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 07:43:37,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351
[2020-09-25 07:43:37,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:37,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-25 07:43:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26
[2020-09-25 07:43:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-09-25 07:43:37,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:37,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 07:43:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:37,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:37,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:37,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 07:43:37,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:37,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-25 07:43:37,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:37,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 07:43:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:37,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 07:43:37,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:37,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 07:43:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:37,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:37,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:37,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:37,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38
[2020-09-25 07:43:37,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 07:43:37,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300
[2020-09-25 07:43:37,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:37,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-25 07:43:37,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7
[2020-09-25 07:43:37,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-09-25 07:43:37,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:37,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-25 07:43:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:37,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:37,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:37,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:37,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-25 07:43:37,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 07:43:37,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144
[2020-09-25 07:43:37,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:37,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:37,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-25 07:43:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-25 07:43:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21
[2020-09-25 07:43:37,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:38,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-25 07:43:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:38,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:38,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:38,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 07:43:38,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:38,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26
[2020-09-25 07:43:38,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:38,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:38,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 07:43:38,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:38,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 07:43:38,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:38,161 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2020-09-25 07:43:38,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17871807]
[2020-09-25 07:43:38,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 07:43:38,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2020-09-25 07:43:38,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172572645]
[2020-09-25 07:43:38,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-25 07:43:38,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 07:43:38,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-25 07:43:38,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2020-09-25 07:43:38,164 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 10 states.
[2020-09-25 07:43:38,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 07:43:38,401 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions.
[2020-09-25 07:43:38,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2020-09-25 07:43:38,401 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46
[2020-09-25 07:43:38,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 07:43:38,403 INFO L225 Difference]: With dead ends: 76
[2020-09-25 07:43:38,403 INFO L226 Difference]: Without dead ends: 49
[2020-09-25 07:43:38,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240
[2020-09-25 07:43:38,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2020-09-25 07:43:38,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47.
[2020-09-25 07:43:38,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states.
[2020-09-25 07:43:38,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions.
[2020-09-25 07:43:38,422 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 46
[2020-09-25 07:43:38,422 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 07:43:38,422 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions.
[2020-09-25 07:43:38,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-25 07:43:38,422 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions.
[2020-09-25 07:43:38,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2020-09-25 07:43:38,429 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 07:43:38,429 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 07:43:38,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-09-25 07:43:38,430 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 07:43:38,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 07:43:38,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1010225367, now seen corresponding path program 1 times
[2020-09-25 07:43:38,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 07:43:38,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990714443]
[2020-09-25 07:43:38,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 07:43:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:38,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:38,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:38,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:38,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:38,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:38,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:38,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:43,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:43,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60
[2020-09-25 07:43:43,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8
[2020-09-25 07:43:43,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4775
[2020-09-25 07:43:43,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:43,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-09-25 07:43:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-09-25 07:43:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39
[2020-09-25 07:43:43,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:43,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 07:43:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:43,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:43,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:43,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 07:43:43,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:43,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 07:43:43,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:43,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:43,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 07:43:43,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:43,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 07:43:43,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:43,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 07:43:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:43,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:43,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:43,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39
[2020-09-25 07:43:43,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:43,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214
[2020-09-25 07:43:43,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:43,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:43,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-09-25 07:43:43,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:43,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36
[2020-09-25 07:43:43,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:43,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-25 07:43:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:43,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:43,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:43,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26
[2020-09-25 07:43:43,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:43,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140
[2020-09-25 07:43:43,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:43,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:43,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-09-25 07:43:43,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:43,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-09-25 07:43:43,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:43,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-25 07:43:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:43,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:43,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:43,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 07:43:43,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:43,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49
[2020-09-25 07:43:43,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:43,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:43,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-25 07:43:43,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:43,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-09-25 07:43:43,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2020-09-25 07:43:43,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990714443]
[2020-09-25 07:43:43,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 07:43:43,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12
[2020-09-25 07:43:43,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082109323]
[2020-09-25 07:43:43,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-09-25 07:43:43,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 07:43:43,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-09-25 07:43:43,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132
[2020-09-25 07:43:43,864 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 12 states.
[2020-09-25 07:43:44,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 07:43:44,137 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions.
[2020-09-25 07:43:44,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-09-25 07:43:44,137 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47
[2020-09-25 07:43:44,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 07:43:44,138 INFO L225 Difference]: With dead ends: 63
[2020-09-25 07:43:44,139 INFO L226 Difference]: Without dead ends: 57
[2020-09-25 07:43:44,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380
[2020-09-25 07:43:44,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2020-09-25 07:43:44,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52.
[2020-09-25 07:43:44,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states.
[2020-09-25 07:43:44,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions.
[2020-09-25 07:43:44,152 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 47
[2020-09-25 07:43:44,152 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 07:43:44,153 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions.
[2020-09-25 07:43:44,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-09-25 07:43:44,153 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions.
[2020-09-25 07:43:44,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2020-09-25 07:43:44,154 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 07:43:44,154 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 07:43:44,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-09-25 07:43:44,155 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 07:43:44,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 07:43:44,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1466875377, now seen corresponding path program 2 times
[2020-09-25 07:43:44,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 07:43:44,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950167342]
[2020-09-25 07:43:44,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 07:43:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:44,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:44,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:44,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:44,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:44,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:44,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:44,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:44,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:47,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:47,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60
[2020-09-25 07:43:47,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8
[2020-09-25 07:43:47,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3174
[2020-09-25 07:43:47,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:47,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16
[2020-09-25 07:43:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-09-25 07:43:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39
[2020-09-25 07:43:47,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:47,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 07:43:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:47,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:47,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:47,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 07:43:47,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:47,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-25 07:43:47,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:47,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:47,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 07:43:47,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:47,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 07:43:47,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:47,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 07:43:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:47,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:47,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:47,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39
[2020-09-25 07:43:47,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:47,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191
[2020-09-25 07:43:47,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:47,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:47,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15
[2020-09-25 07:43:47,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:47,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36
[2020-09-25 07:43:47,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:47,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-25 07:43:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:47,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:47,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:47,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26
[2020-09-25 07:43:47,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:47,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129
[2020-09-25 07:43:47,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:47,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:47,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-09-25 07:43:47,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:47,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-09-25 07:43:47,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:47,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-25 07:43:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:47,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:47,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:47,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 07:43:47,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:47,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38
[2020-09-25 07:43:47,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:47,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:47,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-25 07:43:47,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:47,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-09-25 07:43:47,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:47,886 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2020-09-25 07:43:47,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950167342]
[2020-09-25 07:43:47,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 07:43:47,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12
[2020-09-25 07:43:47,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436193167]
[2020-09-25 07:43:47,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-09-25 07:43:47,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 07:43:47,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-09-25 07:43:47,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132
[2020-09-25 07:43:47,890 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 12 states.
[2020-09-25 07:43:48,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 07:43:48,223 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions.
[2020-09-25 07:43:48,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-09-25 07:43:48,224 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47
[2020-09-25 07:43:48,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 07:43:48,226 INFO L225 Difference]: With dead ends: 68
[2020-09-25 07:43:48,226 INFO L226 Difference]: Without dead ends: 62
[2020-09-25 07:43:48,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380
[2020-09-25 07:43:48,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states.
[2020-09-25 07:43:48,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55.
[2020-09-25 07:43:48,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states.
[2020-09-25 07:43:48,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions.
[2020-09-25 07:43:48,247 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 47
[2020-09-25 07:43:48,247 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 07:43:48,247 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions.
[2020-09-25 07:43:48,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-09-25 07:43:48,248 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions.
[2020-09-25 07:43:48,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2020-09-25 07:43:48,250 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 07:43:48,250 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 07:43:48,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-09-25 07:43:48,251 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 07:43:48,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 07:43:48,251 INFO L82 PathProgramCache]: Analyzing trace with hash -609776486, now seen corresponding path program 3 times
[2020-09-25 07:43:48,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 07:43:48,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89905203]
[2020-09-25 07:43:48,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 07:43:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:48,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:48,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:48,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:48,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:48,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:48,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:48,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:48,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:48,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:49,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:49,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:49,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:49,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:53,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:53,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73
[2020-09-25 07:43:53,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13
[2020-09-25 07:43:53,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001
[2020-09-25 07:43:53,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:53,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-09-25 07:43:53,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26
[2020-09-25 07:43:53,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46
[2020-09-25 07:43:53,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:53,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 07:43:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:53,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:53,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:53,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 07:43:53,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 07:43:53,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-25 07:43:53,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:53,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:53,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 07:43:53,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:53,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 07:43:53,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:53,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-09-25 07:43:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:53,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:53,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:53,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:53,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:53,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:53,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:53,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:53,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:54,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:54,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:55,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:58,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:58,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52
[2020-09-25 07:43:58,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11
[2020-09-25 07:43:58,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000
[2020-09-25 07:43:58,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:58,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:58,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17
[2020-09-25 07:43:58,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:58,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-09-25 07:43:58,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:58,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-25 07:43:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:58,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:58,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:58,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:58,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:58,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:58,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:58,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:59,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:59,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39
[2020-09-25 07:43:59,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7
[2020-09-25 07:43:59,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797
[2020-09-25 07:43:59,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:59,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:59,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-25 07:43:59,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:59,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34
[2020-09-25 07:43:59,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:59,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-25 07:43:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:59,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:59,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:59,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:59,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:59,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26
[2020-09-25 07:43:59,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 07:43:59,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132
[2020-09-25 07:43:59,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:59,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:59,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-25 07:43:59,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:59,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21
[2020-09-25 07:43:59,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:59,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-25 07:43:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 07:43:59,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:59,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 07:43:59,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 07:43:59,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 07:43:59,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 07:43:59,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19
[2020-09-25 07:43:59,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 07:43:59,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8
[2020-09-25 07:43:59,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 07:43:59,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 07:43:59,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-09-25 07:43:59,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 07:43:59,369 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2020-09-25 07:43:59,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89905203]
[2020-09-25 07:43:59,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 07:43:59,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-09-25 07:43:59,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499659796]
[2020-09-25 07:43:59,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-25 07:43:59,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 07:43:59,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-25 07:43:59,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90
[2020-09-25 07:43:59,371 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 10 states.
[2020-09-25 07:43:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 07:43:59,561 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions.
[2020-09-25 07:43:59,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2020-09-25 07:43:59,562 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58
[2020-09-25 07:43:59,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 07:43:59,563 INFO L225 Difference]: With dead ends: 55
[2020-09-25 07:43:59,563 INFO L226 Difference]: Without dead ends: 0
[2020-09-25 07:43:59,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306
[2020-09-25 07:43:59,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-25 07:43:59,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-25 07:43:59,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-25 07:43:59,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-25 07:43:59,565 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58
[2020-09-25 07:43:59,565 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 07:43:59,565 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-25 07:43:59,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-25 07:43:59,566 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-25 07:43:59,566 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-25 07:43:59,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2020-09-25 07:43:59,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-25 07:43:59,679 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-25 07:43:59,679 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 07:43:59,679 INFO L268 CegarLoopResult]: For program point gcdFINAL(lines 15 26) no Hoare annotation was computed.
[2020-09-25 07:43:59,680 INFO L268 CegarLoopResult]: For program point gcdEXIT(lines 15 26) no Hoare annotation was computed.
[2020-09-25 07:43:59,680 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (= gcd_~y2 |gcd_#in~y2|) (<= (+ gcd_~y1 1) gcd_~y2) (= gcd_~y1 |gcd_#in~y1|) (<= 1 gcd_~y1))
[2020-09-25 07:43:59,680 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed.
[2020-09-25 07:43:59,680 INFO L271 CegarLoopResult]: At program point gcdENTRY(lines 15 26) the Hoare annotation is: true
[2020-09-25 07:43:59,682 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= (+ gcd_~y2 1) gcd_~y1) (= gcd_~y2 |gcd_#in~y2|) (= gcd_~y1 |gcd_#in~y1|) (<= 1 gcd_~y1))
[2020-09-25 07:43:59,682 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed.
[2020-09-25 07:43:59,682 INFO L268 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed.
[2020-09-25 07:43:59,682 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed.
[2020-09-25 07:43:59,682 INFO L268 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed.
[2020-09-25 07:43:59,682 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed.
[2020-09-25 07:43:59,682 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed.
[2020-09-25 07:43:59,683 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed.
[2020-09-25 07:43:59,683 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed.
[2020-09-25 07:43:59,683 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed.
[2020-09-25 07:43:59,683 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed.
[2020-09-25 07:43:59,684 INFO L268 CegarLoopResult]: For program point L15(lines 15 26) no Hoare annotation was computed.
[2020-09-25 07:43:59,684 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 07:43:59,684 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-25 07:43:59,684 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-25 07:43:59,684 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 07:43:59,684 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed.
[2020-09-25 07:43:59,684 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed.
[2020-09-25 07:43:59,685 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed.
[2020-09-25 07:43:59,685 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed.
[2020-09-25 07:43:59,685 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed.
[2020-09-25 07:43:59,685 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed.
[2020-09-25 07:43:59,685 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 28 43) no Hoare annotation was computed.
[2020-09-25 07:43:59,685 INFO L268 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed.
[2020-09-25 07:43:59,686 INFO L268 CegarLoopResult]: For program point L38-1(lines 28 43) no Hoare annotation was computed.
[2020-09-25 07:43:59,686 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed.
[2020-09-25 07:43:59,686 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed.
[2020-09-25 07:43:59,686 INFO L268 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed.
[2020-09-25 07:43:59,686 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 28 43) the Hoare annotation is: true
[2020-09-25 07:43:59,686 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed.
[2020-09-25 07:43:59,687 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed.
[2020-09-25 07:43:59,687 INFO L271 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: true
[2020-09-25 07:43:59,687 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed.
[2020-09-25 07:43:59,687 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed.
[2020-09-25 07:43:59,687 INFO L268 CegarLoopResult]: For program point L37-2(line 37) no Hoare annotation was computed.
[2020-09-25 07:43:59,688 INFO L268 CegarLoopResult]: For program point L37-3(line 37) no Hoare annotation was computed.
[2020-09-25 07:43:59,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 07:43:59 BoogieIcfgContainer
[2020-09-25 07:43:59,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 07:43:59,701 INFO L168 Benchmark]: Toolchain (without parser) took 30356.81 ms. Allocated memory was 138.9 MB in the beginning and 387.4 MB in the end (delta: 248.5 MB). Free memory was 101.4 MB in the beginning and 267.8 MB in the end (delta: -166.5 MB). Peak memory consumption was 82.0 MB. Max. memory is 7.1 GB.
[2020-09-25 07:43:59,702 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-25 07:43:59,703 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.09 ms. Allocated memory is still 138.9 MB. Free memory was 100.7 MB in the beginning and 90.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
[2020-09-25 07:43:59,708 INFO L168 Benchmark]: Boogie Preprocessor took 33.08 ms. Allocated memory is still 138.9 MB. Free memory was 90.8 MB in the beginning and 89.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
[2020-09-25 07:43:59,709 INFO L168 Benchmark]: RCFGBuilder took 440.60 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 89.4 MB in the beginning and 167.3 MB in the end (delta: -77.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB.
[2020-09-25 07:43:59,710 INFO L168 Benchmark]: TraceAbstraction took 29580.68 ms. Allocated memory was 202.4 MB in the beginning and 387.4 MB in the end (delta: 185.1 MB). Free memory was 166.6 MB in the beginning and 267.8 MB in the end (delta: -101.2 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB.
[2020-09-25 07:43:59,724 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 294.09 ms. Allocated memory is still 138.9 MB. Free memory was 100.7 MB in the beginning and 90.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 33.08 ms. Allocated memory is still 138.9 MB. Free memory was 90.8 MB in the beginning and 89.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 440.60 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 89.4 MB in the beginning and 167.3 MB in the end (delta: -77.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 29580.68 ms. Allocated memory was 202.4 MB in the beginning and 387.4 MB in the end (delta: 185.1 MB). Free memory was 166.6 MB in the beginning and 267.8 MB in the end (delta: -101.2 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable
For all program executions holds that call of __VERIFIER_error() unreachable at this location
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 29.3s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 311 SDtfs, 383 SDslu, 1304 SDs, 0 SdLazy, 1134 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 208 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 39 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 36 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 26.4s InterpolantComputationTime, 389 NumberOfCodeBlocks, 389 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 379 ConstructedInterpolants, 0 QuantifiedInterpolants, 39486 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 99/120 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...