/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 05:43:52,926 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 05:43:52,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 05:43:52,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 05:43:52,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 05:43:52,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 05:43:52,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 05:43:52,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 05:43:52,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 05:43:52,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 05:43:52,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 05:43:52,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 05:43:52,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 05:43:52,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 05:43:52,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 05:43:52,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 05:43:52,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 05:43:52,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 05:43:52,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 05:43:52,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 05:43:52,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 05:43:52,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 05:43:52,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 05:43:52,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 05:43:52,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 05:43:52,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 05:43:52,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 05:43:52,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 05:43:52,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 05:43:52,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 05:43:52,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 05:43:52,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 05:43:52,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 05:43:52,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 05:43:52,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 05:43:52,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 05:43:52,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 05:43:52,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 05:43:52,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 05:43:53,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 05:43:53,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 05:43:53,002 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 05:43:53,029 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 05:43:53,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 05:43:53,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 05:43:53,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 05:43:53,031 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 05:43:53,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 05:43:53,032 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 05:43:53,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 05:43:53,032 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 05:43:53,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 05:43:53,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 05:43:53,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 05:43:53,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 05:43:53,033 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 05:43:53,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 05:43:53,033 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 05:43:53,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 05:43:53,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 05:43:53,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 05:43:53,034 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 05:43:53,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 05:43:53,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 05:43:53,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 05:43:53,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 05:43:53,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 05:43:53,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 05:43:53,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 05:43:53,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 05:43:53,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 05:43:53,036 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true;
[2020-09-25 05:43:53,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 05:43:53,578 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 05:43:53,582 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 05:43:53,584 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 05:43:53,585 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 05:43:53,586 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c
[2020-09-25 05:43:53,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a6a446b4/69ebbbdc6b1242a984175df3444e3276/FLAG13ecf79e8
[2020-09-25 05:43:54,213 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 05:43:54,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c
[2020-09-25 05:43:54,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a6a446b4/69ebbbdc6b1242a984175df3444e3276/FLAG13ecf79e8
[2020-09-25 05:43:54,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2a6a446b4/69ebbbdc6b1242a984175df3444e3276
[2020-09-25 05:43:54,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 05:43:54,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 05:43:54,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 05:43:54,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 05:43:54,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 05:43:54,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:43:54" (1/1) ...
[2020-09-25 05:43:54,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76095f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:54, skipping insertion in model container
[2020-09-25 05:43:54,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:43:54" (1/1) ...
[2020-09-25 05:43:54,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 05:43:54,620 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 05:43:54,846 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 05:43:54,853 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 05:43:54,873 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 05:43:54,891 INFO L208 MainTranslator]: Completed translation
[2020-09-25 05:43:54,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:54 WrapperNode
[2020-09-25 05:43:54,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 05:43:54,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 05:43:54,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 05:43:54,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 05:43:54,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:54" (1/1) ...
[2020-09-25 05:43:54,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:54" (1/1) ...
[2020-09-25 05:43:54,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:54" (1/1) ...
[2020-09-25 05:43:54,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:54" (1/1) ...
[2020-09-25 05:43:54,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:54" (1/1) ...
[2020-09-25 05:43:54,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:54" (1/1) ...
[2020-09-25 05:43:54,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:54" (1/1) ...
[2020-09-25 05:43:55,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 05:43:55,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 05:43:55,008 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 05:43:55,008 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 05:43:55,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:54" (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 05:43:55,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 05:43:55,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 05:43:55,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-25 05:43:55,084 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 05:43:55,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 05:43:55,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-25 05:43:55,085 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 05:43:55,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 05:43:55,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 05:43:55,280 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 05:43:55,281 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-25 05:43:55,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:43:55 BoogieIcfgContainer
[2020-09-25 05:43:55,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 05:43:55,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 05:43:55,288 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 05:43:55,298 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 05:43:55,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:43:54" (1/3) ...
[2020-09-25 05:43:55,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b78c811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:43:55, skipping insertion in model container
[2020-09-25 05:43:55,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:43:54" (2/3) ...
[2020-09-25 05:43:55,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b78c811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:43:55, skipping insertion in model container
[2020-09-25 05:43:55,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:43:55" (3/3) ...
[2020-09-25 05:43:55,309 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_vardep_2.c
[2020-09-25 05:43:55,348 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 05:43:55,372 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 05:43:55,421 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 05:43:55,454 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 05:43:55,454 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 05:43:55,454 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 05:43:55,454 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 05:43:55,454 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 05:43:55,455 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 05:43:55,455 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 05:43:55,455 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 05:43:55,474 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states.
[2020-09-25 05:43:55,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-09-25 05:43:55,481 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 05:43:55,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 05:43:55,482 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 05:43:55,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 05:43:55,490 INFO L82 PathProgramCache]: Analyzing trace with hash -420526341, now seen corresponding path program 1 times
[2020-09-25 05:43:55,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 05:43:55,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638070023]
[2020-09-25 05:43:55,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 05:43:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:43:55,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:43:56,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:43:56,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24
[2020-09-25 05:43:56,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:43:56,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423
[2020-09-25 05:43:56,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:43:56,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:43:56,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-25 05:43:56,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-25 05:43:56,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-09-25 05:43:56,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-09-25 05:43:56,829 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35
[2020-09-25 05:43:56,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 05:43:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:43:56,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:43:56,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:43:56,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 05:43:56,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:43:56,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 05:43:56,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:43:56,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:43:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 05:43:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 05:43:56,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 05:43:56,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:43:56,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 05:43:56,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638070023]
[2020-09-25 05:43:56,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 05:43:56,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2020-09-25 05:43:56,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44063570]
[2020-09-25 05:43:56,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-25 05:43:56,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 05:43:56,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-25 05:43:56,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90
[2020-09-25 05:43:56,912 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 10 states.
[2020-09-25 05:43:57,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 05:43:57,147 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions.
[2020-09-25 05:43:57,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2020-09-25 05:43:57,150 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15
[2020-09-25 05:43:57,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 05:43:57,182 INFO L225 Difference]: With dead ends: 50
[2020-09-25 05:43:57,182 INFO L226 Difference]: Without dead ends: 29
[2020-09-25 05:43:57,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132
[2020-09-25 05:43:57,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2020-09-25 05:43:57,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27.
[2020-09-25 05:43:57,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2020-09-25 05:43:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions.
[2020-09-25 05:43:57,234 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 15
[2020-09-25 05:43:57,234 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 05:43:57,235 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions.
[2020-09-25 05:43:57,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-25 05:43:57,235 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions.
[2020-09-25 05:43:57,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2020-09-25 05:43:57,236 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 05:43:57,236 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 05:43:57,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 05:43:57,237 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 05:43:57,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 05:43:57,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1780540834, now seen corresponding path program 1 times
[2020-09-25 05:43:57,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 05:43:57,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047942009]
[2020-09-25 05:43:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 05:43:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:43:57,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:43:57,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:43:59,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:43:59,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35
[2020-09-25 05:43:59,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 05:43:59,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1784
[2020-09-25 05:43:59,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:43:59,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:43:59,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-09-25 05:43:59,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-25 05:43:59,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-09-25 05:43:59,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-25 05:43:59,802 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 36
[2020-09-25 05:43:59,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 05:43:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:43:59,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:43:59,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:43:59,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 05:43:59,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:43:59,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 05:43:59,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:43:59,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:43:59,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 05:43:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 05:43:59,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 05:43:59,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 05:43:59,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-25 05:43:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:43:59,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:43:59,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:43:59,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 05:43:59,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:43:59,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35
[2020-09-25 05:43:59,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:43:59,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:43:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 05:43:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 05:43:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 05:43:59,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:43:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 05:43:59,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047942009]
[2020-09-25 05:43:59,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 05:43:59,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13
[2020-09-25 05:43:59,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275521670]
[2020-09-25 05:43:59,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-09-25 05:43:59,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 05:43:59,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-09-25 05:43:59,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156
[2020-09-25 05:43:59,912 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 13 states.
[2020-09-25 05:44:00,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 05:44:00,097 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions.
[2020-09-25 05:44:00,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-09-25 05:44:00,098 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24
[2020-09-25 05:44:00,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 05:44:00,100 INFO L225 Difference]: With dead ends: 40
[2020-09-25 05:44:00,100 INFO L226 Difference]: Without dead ends: 38
[2020-09-25 05:44:00,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182
[2020-09-25 05:44:00,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2020-09-25 05:44:00,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36.
[2020-09-25 05:44:00,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states.
[2020-09-25 05:44:00,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions.
[2020-09-25 05:44:00,119 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 24
[2020-09-25 05:44:00,120 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 05:44:00,120 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions.
[2020-09-25 05:44:00,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-09-25 05:44:00,120 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions.
[2020-09-25 05:44:00,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2020-09-25 05:44:00,124 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 05:44:00,125 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 05:44:00,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 05:44:00,126 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 05:44:00,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 05:44:00,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1647717669, now seen corresponding path program 2 times
[2020-09-25 05:44:00,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 05:44:00,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814713192]
[2020-09-25 05:44:00,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 05:44:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:44:00,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:00,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:01,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:05,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:44:05,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46
[2020-09-25 05:44:05,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 05:44:05,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014
[2020-09-25 05:44:05,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:44:05,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:44:05,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-09-25 05:44:05,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-09-25 05:44:05,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26
[2020-09-25 05:44:05,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:44:13,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 05:44:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:44:13,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:13,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:44:13,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 05:44:13,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:44:13,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 05:44:13,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:44:13,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:44:13,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 05:44:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 05:44:13,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 05:44:13,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:44:13,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-25 05:44:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:44:13,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:13,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:44:13,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 05:44:13,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 05:44:13,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35
[2020-09-25 05:44:13,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:44:13,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:44:13,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 05:44:13,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 05:44:13,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-25 05:44:13,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:44:13,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2020-09-25 05:44:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 05:44:13,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:13,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 05:44:13,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 05:44:13,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 05:44:13,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 05:44:13,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58
[2020-09-25 05:44:13,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 05:44:13,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 05:44:13,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 05:44:13,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 05:44:13,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 05:44:13,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 05:44:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 4 refuted. 3 times theorem prover too weak. 2 trivial. 0 not checked.
[2020-09-25 05:44:13,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814713192]
[2020-09-25 05:44:13,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 05:44:13,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-09-25 05:44:13,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380945713]
[2020-09-25 05:44:13,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-25 05:44:13,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 05:44:13,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-25 05:44:13,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=86, Unknown=2, NotChecked=0, Total=110
[2020-09-25 05:44:13,494 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 11 states.
[2020-09-25 05:44:18,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 05:44:18,019 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions.
[2020-09-25 05:44:18,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2020-09-25 05:44:18,020 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33
[2020-09-25 05:44:18,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 05:44:18,020 INFO L225 Difference]: With dead ends: 36
[2020-09-25 05:44:18,021 INFO L226 Difference]: Without dead ends: 0
[2020-09-25 05:44:18,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=33, Invalid=121, Unknown=2, NotChecked=0, Total=156
[2020-09-25 05:44:18,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-25 05:44:18,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-25 05:44:18,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-25 05:44:18,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-25 05:44:18,023 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33
[2020-09-25 05:44:18,023 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 05:44:18,023 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-25 05:44:18,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-25 05:44:18,023 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-25 05:44:18,024 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-25 05:44:18,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 05:44:18,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-25 05:44:18,248 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-25 05:44:18,248 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 05:44:18,249 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 05:44:18,249 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-25 05:44:18,249 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-25 05:44:18,249 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 05:44:18,249 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true
[2020-09-25 05:44:18,249 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed.
[2020-09-25 05:44:18,250 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse4 (div (* main_~i~0 2) 4294967296)) (.cse5 (div main_~j~0 4294967296))) (let ((.cse1 (+ (* 4294967296 (div (* main_~i~0 3) 4294967296)) main_~i~0 (* 8589934592 .cse5) main_~k~0)) (.cse0 (+ (* 2 main_~j~0) (* 8589934592 .cse4) (* 4294967296 (div main_~k~0 4294967296)))) (.cse3 (+ (* 2 main_~i~0) (* 4294967296 .cse5))) (.cse2 (+ main_~j~0 (* 4294967296 .cse4)))) (and (<= .cse0 .cse1) (<= .cse2 .cse3) (<= .cse1 .cse0) (<= .cse3 .cse2))))
[2020-09-25 05:44:18,250 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed.
[2020-09-25 05:44:18,251 INFO L264 CegarLoopResult]: At program point L23-1(lines 19 24) the Hoare annotation is: (let ((.cse4 (div (* main_~i~0 2) 4294967296)) (.cse5 (div main_~j~0 4294967296))) (let ((.cse1 (+ (* 4294967296 (div (* main_~i~0 3) 4294967296)) main_~i~0 (* 8589934592 .cse5) main_~k~0)) (.cse0 (+ (* 2 main_~j~0) (* 8589934592 .cse4) (* 4294967296 (div main_~k~0 4294967296)))) (.cse3 (+ (* 2 main_~i~0) (* 4294967296 .cse5))) (.cse2 (+ main_~j~0 (* 4294967296 .cse4)))) (and (<= .cse0 .cse1) (<= .cse2 .cse3) (<= .cse1 .cse0) (<= .cse3 .cse2))))
[2020-09-25 05:44:18,251 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed.
[2020-09-25 05:44:18,251 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed.
[2020-09-25 05:44:18,251 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed.
[2020-09-25 05:44:18,251 INFO L268 CegarLoopResult]: For program point L19-2(lines 13 26) no Hoare annotation was computed.
[2020-09-25 05:44:18,251 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed.
[2020-09-25 05:44:18,252 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 11) the Hoare annotation is: true
[2020-09-25 05:44:18,252 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 11) no Hoare annotation was computed.
[2020-09-25 05:44:18,252 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed.
[2020-09-25 05:44:18,252 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed.
[2020-09-25 05:44:18,252 INFO L268 CegarLoopResult]: For program point L7-2(lines 5 11) no Hoare annotation was computed.
[2020-09-25 05:44:18,252 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed.
[2020-09-25 05:44:18,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:44:18 BoogieIcfgContainer
[2020-09-25 05:44:18,277 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 05:44:18,280 INFO L168 Benchmark]: Toolchain (without parser) took 23713.93 ms. Allocated memory was 136.8 MB in the beginning and 358.1 MB in the end (delta: 221.2 MB). Free memory was 99.9 MB in the beginning and 101.9 MB in the end (delta: -2.0 MB). Peak memory consumption was 219.3 MB. Max. memory is 7.1 GB.
[2020-09-25 05:44:18,281 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 117.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB.
[2020-09-25 05:44:18,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.16 ms. Allocated memory is still 136.8 MB. Free memory was 99.5 MB in the beginning and 89.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB.
[2020-09-25 05:44:18,283 INFO L168 Benchmark]: Boogie Preprocessor took 115.12 ms. Allocated memory was 136.8 MB in the beginning and 198.7 MB in the end (delta: 61.9 MB). Free memory was 89.7 MB in the beginning and 178.3 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB.
[2020-09-25 05:44:18,284 INFO L168 Benchmark]: RCFGBuilder took 278.79 ms. Allocated memory is still 198.7 MB. Free memory was 178.3 MB in the beginning and 166.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB.
[2020-09-25 05:44:18,285 INFO L168 Benchmark]: TraceAbstraction took 22989.56 ms. Allocated memory was 198.7 MB in the beginning and 358.1 MB in the end (delta: 159.4 MB). Free memory was 166.3 MB in the beginning and 101.9 MB in the end (delta: 64.4 MB). Peak memory consumption was 223.8 MB. Max. memory is 7.1 GB.
[2020-09-25 05:44:18,290 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 136.8 MB. Free memory was 118.4 MB in the beginning and 117.9 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 320.16 ms. Allocated memory is still 136.8 MB. Free memory was 99.5 MB in the beginning and 89.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 115.12 ms. Allocated memory was 136.8 MB in the beginning and 198.7 MB in the end (delta: 61.9 MB). Free memory was 89.7 MB in the beginning and 178.3 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 278.79 ms. Allocated memory is still 198.7 MB. Free memory was 178.3 MB in the beginning and 166.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 22989.56 ms. Allocated memory was 198.7 MB in the beginning and 358.1 MB in the end (delta: 159.4 MB). Free memory was 166.3 MB in the beginning and 101.9 MB in the end (delta: 64.4 MB). Peak memory consumption was 223.8 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable
For all program executions holds that call of __VERIFIER_error() unreachable at this location
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 19]: Loop Invariant
Derived loop invariant: ((2 * j + 8589934592 * (i * 2 / 4294967296) + 4294967296 * (k / 4294967296) <= 4294967296 * (i * 3 / 4294967296) + i + 8589934592 * (j / 4294967296) + k && j + 4294967296 * (i * 2 / 4294967296) <= 2 * i + 4294967296 * (j / 4294967296)) && 4294967296 * (i * 3 / 4294967296) + i + 8589934592 * (j / 4294967296) + k <= 2 * j + 8589934592 * (i * 2 / 4294967296) + 4294967296 * (k / 4294967296)) && 2 * i + 4294967296 * (j / 4294967296) <= j + 4294967296 * (i * 2 / 4294967296)
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 22.5s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 35 SDslu, 256 SDs, 0 SdLazy, 305 SolverSat, 8 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 16 NumberOfFragments, 211 HoareAnnotationTreeSize, 10 FomulaSimplifications, 288 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 150 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.1s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 32868 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 18/30 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...