/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=1.0 --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-acceleration/multivar_1-1.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 09:10:36,534 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 09:10:36,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 09:10:36,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 09:10:36,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 09:10:36,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 09:10:36,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 09:10:36,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 09:10:36,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 09:10:36,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 09:10:36,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 09:10:36,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 09:10:36,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 09:10:36,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 09:10:36,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 09:10:36,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 09:10:36,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 09:10:36,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 09:10:36,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 09:10:36,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 09:10:36,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 09:10:36,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 09:10:36,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 09:10:36,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 09:10:36,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 09:10:36,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 09:10:36,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 09:10:36,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 09:10:36,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 09:10:36,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 09:10:36,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 09:10:36,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 09:10:36,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 09:10:36,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 09:10:36,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 09:10:36,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 09:10:36,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 09:10:36,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 09:10:36,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 09:10:36,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 09:10:36,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 09:10:36,662 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 09:10:36,712 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 09:10:36,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 09:10:36,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 09:10:36,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 09:10:36,715 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 09:10:36,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 09:10:36,716 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 09:10:36,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 09:10:36,716 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 09:10:36,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 09:10:36,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 09:10:36,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 09:10:36,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 09:10:36,719 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 09:10:36,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 09:10:36,719 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 09:10:36,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 09:10:36,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 09:10:36,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 09:10:36,720 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 09:10:36,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 09:10:36,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 09:10:36,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 09:10:36,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 09:10:36,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 09:10:36,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 09:10:36,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 09:10:36,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 09:10:36,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 09:10:36,722 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true;
[2020-09-25 09:10:37,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 09:10:37,204 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 09:10:37,208 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 09:10:37,210 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 09:10:37,211 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 09:10:37,212 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/multivar_1-1.c
[2020-09-25 09:10:37,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d33b73f2a/867b5e2b66b440c2a2fea7720b563e56/FLAGd8b5577f3
[2020-09-25 09:10:37,884 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 09:10:37,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/multivar_1-1.c
[2020-09-25 09:10:37,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d33b73f2a/867b5e2b66b440c2a2fea7720b563e56/FLAGd8b5577f3
[2020-09-25 09:10:38,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d33b73f2a/867b5e2b66b440c2a2fea7720b563e56
[2020-09-25 09:10:38,230 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 09:10:38,237 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 09:10:38,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 09:10:38,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 09:10:38,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 09:10:38,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:10:38" (1/1) ...
[2020-09-25 09:10:38,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a8d835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:38, skipping insertion in model container
[2020-09-25 09:10:38,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:10:38" (1/1) ...
[2020-09-25 09:10:38,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 09:10:38,285 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 09:10:38,503 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 09:10:38,509 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 09:10:38,529 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 09:10:38,548 INFO L208 MainTranslator]: Completed translation
[2020-09-25 09:10:38,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:38 WrapperNode
[2020-09-25 09:10:38,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 09:10:38,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 09:10:38,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 09:10:38,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 09:10:38,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:38" (1/1) ...
[2020-09-25 09:10:38,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:38" (1/1) ...
[2020-09-25 09:10:38,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:38" (1/1) ...
[2020-09-25 09:10:38,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:38" (1/1) ...
[2020-09-25 09:10:38,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:38" (1/1) ...
[2020-09-25 09:10:38,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:38" (1/1) ...
[2020-09-25 09:10:38,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:38" (1/1) ...
[2020-09-25 09:10:38,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 09:10:38,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 09:10:38,669 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 09:10:38,669 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 09:10:38,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:38" (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 09:10:38,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 09:10:38,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 09:10:38,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-25 09:10:38,742 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 09:10:38,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 09:10:38,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint
[2020-09-25 09:10:38,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-25 09:10:38,742 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 09:10:38,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 09:10:38,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 09:10:38,947 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 09:10:38,948 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-25 09:10:38,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:10:38 BoogieIcfgContainer
[2020-09-25 09:10:38,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 09:10:38,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 09:10:38,955 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 09:10:38,959 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 09:10:38,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:10:38" (1/3) ...
[2020-09-25 09:10:38,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c36da3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:10:38, skipping insertion in model container
[2020-09-25 09:10:38,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:38" (2/3) ...
[2020-09-25 09:10:38,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c36da3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:10:38, skipping insertion in model container
[2020-09-25 09:10:38,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:10:38" (3/3) ...
[2020-09-25 09:10:38,966 INFO L109 eAbstractionObserver]: Analyzing ICFG multivar_1-1.c
[2020-09-25 09:10:38,980 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 09:10:38,996 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 09:10:39,030 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 09:10:39,076 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 09:10:39,076 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 09:10:39,076 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 09:10:39,077 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 09:10:39,077 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 09:10:39,077 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 09:10:39,077 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 09:10:39,077 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 09:10:39,102 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states.
[2020-09-25 09:10:39,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-09-25 09:10:39,109 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 09:10:39,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 09:10:39,111 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 09:10:39,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 09:10:39,119 INFO L82 PathProgramCache]: Analyzing trace with hash 677098305, now seen corresponding path program 1 times
[2020-09-25 09:10:39,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 09:10:39,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183945479]
[2020-09-25 09:10:39,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 09:10:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 09:10:39,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 09:10:39,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 09:10:39,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 09:10:39,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21
[2020-09-25 09:10:39,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 09:10:39,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202
[2020-09-25 09:10:39,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 09:10:39,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 09:10:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 09:10:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14
[2020-09-25 09:10:39,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 09:10:39,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8
[2020-09-25 09:10:39,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 09:10:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 09:10:39,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 09:10:39,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 09:10:39,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 09:10:39,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 09:10:39,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-09-25 09:10:39,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 09:10:39,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 09:10:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 09:10:39,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 09:10:39,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 09:10:39,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 09:10:39,513 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 09:10:39,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183945479]
[2020-09-25 09:10:39,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 09:10:39,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-09-25 09:10:39,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815101625]
[2020-09-25 09:10:39,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-09-25 09:10:39,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 09:10:39,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-09-25 09:10:39,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-09-25 09:10:39,554 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states.
[2020-09-25 09:10:39,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 09:10:39,595 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions.
[2020-09-25 09:10:39,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2020-09-25 09:10:39,597 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12
[2020-09-25 09:10:39,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 09:10:39,610 INFO L225 Difference]: With dead ends: 36
[2020-09-25 09:10:39,610 INFO L226 Difference]: Without dead ends: 19
[2020-09-25 09:10:39,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-09-25 09:10:39,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2020-09-25 09:10:39,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2020-09-25 09:10:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states.
[2020-09-25 09:10:39,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions.
[2020-09-25 09:10:39,680 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12
[2020-09-25 09:10:39,680 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 09:10:39,681 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions.
[2020-09-25 09:10:39,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-09-25 09:10:39,682 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions.
[2020-09-25 09:10:39,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-09-25 09:10:39,683 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 09:10:39,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 09:10:39,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 09:10:39,684 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 09:10:39,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 09:10:39,684 INFO L82 PathProgramCache]: Analyzing trace with hash 667863095, now seen corresponding path program 1 times
[2020-09-25 09:10:39,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 09:10:39,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904241059]
[2020-09-25 09:10:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 09:10:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 09:10:39,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 09:10:39,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 09:10:39,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21
[2020-09-25 09:10:39,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 09:10:39,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136
[2020-09-25 09:10:39,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 09:10:39,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 09:10:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 09:10:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13
[2020-09-25 09:10:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-25 09:10:39,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 09:10:40,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 09:10:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 09:10:40,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 09:10:40,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 09:10:40,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 09:10:40,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 09:10:40,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 09:10:40,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 09:10:40,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 09:10:40,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 09:10:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 09:10:40,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 09:10:40,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 09:10:40,070 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 09:10:40,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904241059]
[2020-09-25 09:10:40,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 09:10:40,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 09:10:40,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391406049]
[2020-09-25 09:10:40,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-25 09:10:40,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 09:10:40,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-25 09:10:40,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-25 09:10:40,075 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states.
[2020-09-25 09:10:40,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 09:10:40,176 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions.
[2020-09-25 09:10:40,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-09-25 09:10:40,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12
[2020-09-25 09:10:40,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 09:10:40,178 INFO L225 Difference]: With dead ends: 27
[2020-09-25 09:10:40,178 INFO L226 Difference]: Without dead ends: 22
[2020-09-25 09:10:40,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-25 09:10:40,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2020-09-25 09:10:40,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20.
[2020-09-25 09:10:40,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2020-09-25 09:10:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions.
[2020-09-25 09:10:40,186 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12
[2020-09-25 09:10:40,187 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 09:10:40,187 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions.
[2020-09-25 09:10:40,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-25 09:10:40,187 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions.
[2020-09-25 09:10:40,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-09-25 09:10:40,188 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 09:10:40,188 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 09:10:40,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 09:10:40,189 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 09:10:40,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 09:10:40,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1021038377, now seen corresponding path program 1 times
[2020-09-25 09:10:40,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 09:10:40,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72090884]
[2020-09-25 09:10:40,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 09:10:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 09:10:40,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 09:10:40,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 09:10:40,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28
[2020-09-25 09:10:40,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 09:10:40,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354
[2020-09-25 09:10:40,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 09:10:40,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 09:10:40,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-25 09:10:40,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13
[2020-09-25 09:10:40,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14
[2020-09-25 09:10:40,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 09:10:40,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 09:10:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 09:10:40,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 09:10:40,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 09:10:40,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-25 09:10:40,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 09:10:40,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 09:10:40,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-09-25 09:10:40,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0
[2020-09-25 09:10:40,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 09:10:40,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 09:10:40,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 09:10:40,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 09:10:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 09:10:40,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72090884]
[2020-09-25 09:10:40,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 09:10:40,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2020-09-25 09:10:40,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120514228]
[2020-09-25 09:10:40,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-25 09:10:40,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 09:10:40,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-25 09:10:40,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72
[2020-09-25 09:10:40,882 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 9 states.
[2020-09-25 09:10:41,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 09:10:41,016 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions.
[2020-09-25 09:10:41,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2020-09-25 09:10:41,017 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19
[2020-09-25 09:10:41,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 09:10:41,018 INFO L225 Difference]: With dead ends: 20
[2020-09-25 09:10:41,018 INFO L226 Difference]: Without dead ends: 0
[2020-09-25 09:10:41,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182
[2020-09-25 09:10:41,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-25 09:10:41,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-25 09:10:41,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-25 09:10:41,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-25 09:10:41,022 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19
[2020-09-25 09:10:41,022 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 09:10:41,022 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-25 09:10:41,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-25 09:10:41,022 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-25 09:10:41,022 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-25 09:10:41,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 09:10:41,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-25 09:10:41,107 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-25 09:10:41,108 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 09:10:41,108 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 09:10:41,108 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-25 09:10:41,108 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-25 09:10:41,108 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 09:10:41,109 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 21) the Hoare annotation is: true
[2020-09-25 09:10:41,109 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 21) no Hoare annotation was computed.
[2020-09-25 09:10:41,109 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed.
[2020-09-25 09:10:41,109 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed.
[2020-09-25 09:10:41,109 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed.
[2020-09-25 09:10:41,109 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed.
[2020-09-25 09:10:41,109 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed.
[2020-09-25 09:10:41,110 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed.
[2020-09-25 09:10:41,110 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed.
[2020-09-25 09:10:41,110 INFO L264 CegarLoopResult]: At program point L15-2(lines 15 18) the Hoare annotation is: (= main_~y~0 main_~x~0)
[2020-09-25 09:10:41,110 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 21) no Hoare annotation was computed.
[2020-09-25 09:10:41,110 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed.
[2020-09-25 09:10:41,111 INFO L264 CegarLoopResult]: At program point L15-3(lines 15 18) the Hoare annotation is: (let ((.cse1 (* 4294967296 (div main_~x~0 4294967296))) (.cse0 (+ main_~x~0 (* 4294967296 (div main_~y~0 4294967296))))) (and (< .cse0 (+ main_~y~0 .cse1 1)) (<= (+ main_~y~0 .cse1) .cse0) (<= main_~y~0 main_~x~0)))
[2020-09-25 09:10:41,111 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true
[2020-09-25 09:10:41,111 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed.
[2020-09-25 09:10:41,111 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed.
[2020-09-25 09:10:41,111 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed.
[2020-09-25 09:10:41,112 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed.
[2020-09-25 09:10:41,112 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed.
[2020-09-25 09:10:41,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 09:10:41 BoogieIcfgContainer
[2020-09-25 09:10:41,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 09:10:41,137 INFO L168 Benchmark]: Toolchain (without parser) took 2903.50 ms. Allocated memory was 141.6 MB in the beginning and 233.8 MB in the end (delta: 92.3 MB). Free memory was 104.3 MB in the beginning and 169.9 MB in the end (delta: -65.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB.
[2020-09-25 09:10:41,138 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-25 09:10:41,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.23 ms. Allocated memory is still 141.6 MB. Free memory was 103.7 MB in the beginning and 94.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB.
[2020-09-25 09:10:41,140 INFO L168 Benchmark]: Boogie Preprocessor took 118.65 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 94.4 MB in the beginning and 183.7 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB.
[2020-09-25 09:10:41,141 INFO L168 Benchmark]: RCFGBuilder took 284.77 ms. Allocated memory is still 204.5 MB. Free memory was 183.7 MB in the beginning and 172.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB.
[2020-09-25 09:10:41,143 INFO L168 Benchmark]: TraceAbstraction took 2178.41 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 171.3 MB in the beginning and 169.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 30.8 MB. Max. memory is 7.1 GB.
[2020-09-25 09:10:41,147 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 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 311.23 ms. Allocated memory is still 141.6 MB. Free memory was 103.7 MB in the beginning and 94.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 118.65 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 94.4 MB in the beginning and 183.7 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 284.77 ms. Allocated memory is still 204.5 MB. Free memory was 183.7 MB in the beginning and 172.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 2178.41 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 171.3 MB in the beginning and 169.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 30.8 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 6]: 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: 15]: Loop Invariant
Derived loop invariant: y == x
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 9 SDslu, 93 SDs, 0 SdLazy, 71 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 43 HoareAnnotationTreeSize, 9 FomulaSimplifications, 39 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 3936 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 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...