/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 10:18:54,971 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 10:18:54,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 10:18:55,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 10:18:55,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 10:18:55,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 10:18:55,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 10:18:55,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 10:18:55,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 10:18:55,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 10:18:55,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 10:18:55,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 10:18:55,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 10:18:55,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 10:18:55,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 10:18:55,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 10:18:55,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 10:18:55,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 10:18:55,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 10:18:55,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 10:18:55,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 10:18:55,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 10:18:55,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 10:18:55,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 10:18:55,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 10:18:55,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 10:18:55,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 10:18:55,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 10:18:55,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 10:18:55,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 10:18:55,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 10:18:55,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 10:18:55,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 10:18:55,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 10:18:55,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 10:18:55,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 10:18:55,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 10:18:55,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 10:18:55,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 10:18:55,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 10:18:55,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 10:18:55,041 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 10:18:55,085 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 10:18:55,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 10:18:55,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 10:18:55,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 10:18:55,088 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 10:18:55,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 10:18:55,089 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 10:18:55,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 10:18:55,089 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 10:18:55,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 10:18:55,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 10:18:55,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 10:18:55,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 10:18:55,090 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 10:18:55,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 10:18:55,090 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 10:18:55,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 10:18:55,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 10:18:55,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 10:18:55,093 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 10:18:55,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 10:18:55,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 10:18:55,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 10:18:55,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 10:18:55,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 10:18:55,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 10:18:55,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 10:18:55,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 10:18:55,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 10:18:55,095 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true;
[2020-09-25 10:18:55,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 10:18:55,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 10:18:55,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 10:18:55,609 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 10:18:55,610 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 10:18:55,611 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c
[2020-09-25 10:18:55,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60e5fe271/463d70cd25564b209997e6dd499229f0/FLAG5d0fc72c0
[2020-09-25 10:18:56,221 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 10:18:56,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/loopv1.c
[2020-09-25 10:18:56,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60e5fe271/463d70cd25564b209997e6dd499229f0/FLAG5d0fc72c0
[2020-09-25 10:18:56,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60e5fe271/463d70cd25564b209997e6dd499229f0
[2020-09-25 10:18:56,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 10:18:56,567 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 10:18:56,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 10:18:56,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 10:18:56,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 10:18:56,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:18:56" (1/1) ...
[2020-09-25 10:18:56,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c2b3f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:56, skipping insertion in model container
[2020-09-25 10:18:56,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:18:56" (1/1) ...
[2020-09-25 10:18:56,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 10:18:56,618 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 10:18:56,846 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 10:18:56,854 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 10:18:56,879 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 10:18:56,901 INFO L208 MainTranslator]: Completed translation
[2020-09-25 10:18:56,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:56 WrapperNode
[2020-09-25 10:18:56,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 10:18:56,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 10:18:56,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 10:18:56,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 10:18:56,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:56" (1/1) ...
[2020-09-25 10:18:56,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:56" (1/1) ...
[2020-09-25 10:18:56,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:56" (1/1) ...
[2020-09-25 10:18:56,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:56" (1/1) ...
[2020-09-25 10:18:56,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:56" (1/1) ...
[2020-09-25 10:18:56,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:56" (1/1) ...
[2020-09-25 10:18:56,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:56" (1/1) ...
[2020-09-25 10:18:57,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 10:18:57,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 10:18:57,057 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 10:18:57,057 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 10:18:57,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:56" (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 10:18:57,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 10:18:57,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 10:18:57,155 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-25 10:18:57,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-25 10:18:57,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 10:18:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-25 10:18:57,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 10:18:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-09-25 10:18:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-25 10:18:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-25 10:18:57,157 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 10:18:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 10:18:57,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 10:18:57,402 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 10:18:57,403 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-25 10:18:57,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:18:57 BoogieIcfgContainer
[2020-09-25 10:18:57,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 10:18:57,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 10:18:57,410 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 10:18:57,415 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 10:18:57,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:18:56" (1/3) ...
[2020-09-25 10:18:57,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c543c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:18:57, skipping insertion in model container
[2020-09-25 10:18:57,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:18:56" (2/3) ...
[2020-09-25 10:18:57,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c543c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:18:57, skipping insertion in model container
[2020-09-25 10:18:57,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:18:57" (3/3) ...
[2020-09-25 10:18:57,420 INFO L109 eAbstractionObserver]: Analyzing ICFG loopv1.c
[2020-09-25 10:18:57,433 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 10:18:57,448 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 10:18:57,488 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 10:18:57,530 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 10:18:57,530 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 10:18:57,531 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 10:18:57,531 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 10:18:57,531 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 10:18:57,531 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 10:18:57,532 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 10:18:57,532 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 10:18:57,561 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states.
[2020-09-25 10:18:57,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-09-25 10:18:57,570 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 10:18:57,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 10:18:57,572 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 10:18:57,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 10:18:57,592 INFO L82 PathProgramCache]: Analyzing trace with hash 177195790, now seen corresponding path program 1 times
[2020-09-25 10:18:57,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 10:18:57,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774436098]
[2020-09-25 10:18:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 10:18:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 10:18:57,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 10:18:57,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 10:18:57,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 10:18:57,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28
[2020-09-25 10:18:58,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 10:18:58,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234
[2020-09-25 10:18:58,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 10:18:58,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1
[2020-09-25 10:18:58,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 10:18:58,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-09-25 10:18:58,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-25 10:18:58,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8
[2020-09-25 10:18:58,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 10:18:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 10:18:58,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 10:18:58,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 10:18:58,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-25 10:18:58,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 10:18:58,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-25 10:18:58,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 10:18:58,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1
[2020-09-25 10:18:58,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 10:18:58,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 10:18:58,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 10:18:58,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 10:18:58,219 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 10:18:58,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774436098]
[2020-09-25 10:18:58,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 10:18:58,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-25 10:18:58,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101027184]
[2020-09-25 10:18:58,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 10:18:58,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 10:18:58,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 10:18:58,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-25 10:18:58,253 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 6 states.
[2020-09-25 10:18:58,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 10:18:58,458 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions.
[2020-09-25 10:18:58,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 10:18:58,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19
[2020-09-25 10:18:58,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 10:18:58,470 INFO L225 Difference]: With dead ends: 46
[2020-09-25 10:18:58,471 INFO L226 Difference]: Without dead ends: 0
[2020-09-25 10:18:58,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2020-09-25 10:18:58,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-25 10:18:58,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-25 10:18:58,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-25 10:18:58,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-25 10:18:58,510 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19
[2020-09-25 10:18:58,510 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 10:18:58,510 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-25 10:18:58,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 10:18:58,511 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-25 10:18:58,511 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-25 10:18:58,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 10:18:58,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-25 10:18:58,563 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 10:18:58,564 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|)
[2020-09-25 10:18:58,564 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 10:18:58,564 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 10:18:58,564 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-25 10:18:58,565 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-25 10:18:58,565 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 10:18:58,565 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 7 9) no Hoare annotation was computed.
[2020-09-25 10:18:58,565 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed.
[2020-09-25 10:18:58,565 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed.
[2020-09-25 10:18:58,565 INFO L268 CegarLoopResult]: For program point L8-3(lines 7 9) no Hoare annotation was computed.
[2020-09-25 10:18:58,566 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed.
[2020-09-25 10:18:58,566 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed.
[2020-09-25 10:18:58,566 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 18 32) no Hoare annotation was computed.
[2020-09-25 10:18:58,566 INFO L268 CegarLoopResult]: For program point L25-1(lines 25 28) no Hoare annotation was computed.
[2020-09-25 10:18:58,566 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed.
[2020-09-25 10:18:58,566 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed.
[2020-09-25 10:18:58,567 INFO L268 CegarLoopResult]: For program point L25-4(line 25) no Hoare annotation was computed.
[2020-09-25 10:18:58,567 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 29) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3))
[2020-09-25 10:18:58,567 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed.
[2020-09-25 10:18:58,567 INFO L264 CegarLoopResult]: At program point L25-5(lines 23 29) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3))
[2020-09-25 10:18:58,567 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed.
[2020-09-25 10:18:58,568 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed.
[2020-09-25 10:18:58,568 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 18 32) no Hoare annotation was computed.
[2020-09-25 10:18:58,568 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed.
[2020-09-25 10:18:58,568 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 18 32) the Hoare annotation is: true
[2020-09-25 10:18:58,568 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed.
[2020-09-25 10:18:58,568 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed.
[2020-09-25 10:18:58,569 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed.
[2020-09-25 10:18:58,569 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed.
[2020-09-25 10:18:58,569 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed.
[2020-09-25 10:18:58,569 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed.
[2020-09-25 10:18:58,569 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed.
[2020-09-25 10:18:58,570 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 10 15) the Hoare annotation is: true
[2020-09-25 10:18:58,570 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed.
[2020-09-25 10:18:58,570 INFO L268 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed.
[2020-09-25 10:18:58,570 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 10 15) no Hoare annotation was computed.
[2020-09-25 10:18:58,570 INFO L268 CegarLoopResult]: For program point L11-2(lines 10 15) no Hoare annotation was computed.
[2020-09-25 10:18:58,570 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed.
[2020-09-25 10:18:58,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:18:58 BoogieIcfgContainer
[2020-09-25 10:18:58,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 10:18:58,597 INFO L168 Benchmark]: Toolchain (without parser) took 2030.84 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 102.9 MB in the beginning and 111.9 MB in the end (delta: -9.0 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB.
[2020-09-25 10:18:58,598 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB.
[2020-09-25 10:18:58,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.10 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB.
[2020-09-25 10:18:58,600 INFO L168 Benchmark]: Boogie Preprocessor took 153.88 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 92.6 MB in the beginning and 184.1 MB in the end (delta: -91.5 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB.
[2020-09-25 10:18:58,602 INFO L168 Benchmark]: RCFGBuilder took 351.97 ms. Allocated memory is still 204.5 MB. Free memory was 184.1 MB in the beginning and 169.3 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB.
[2020-09-25 10:18:58,603 INFO L168 Benchmark]: TraceAbstraction took 1182.30 ms. Allocated memory is still 204.5 MB. Free memory was 169.3 MB in the beginning and 111.9 MB in the end (delta: 57.4 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB.
[2020-09-25 10:18:58,607 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 334.10 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 153.88 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 92.6 MB in the beginning and 184.1 MB in the end (delta: -91.5 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 351.97 ms. Allocated memory is still 204.5 MB. Free memory was 184.1 MB in the beginning and 169.3 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1182.30 ms. Allocated memory is still 204.5 MB. Free memory was 169.3 MB in the beginning and 111.9 MB in the end (delta: 57.4 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 12]: 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: 23]: Loop Invariant
Derived loop invariant: i == i / 3 * 3
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 37 SDslu, 29 SDs, 0 SdLazy, 73 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 21 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 792 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be correct!
Received shutdown request...