/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-24 17:22:34,745 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 17:22:34,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 17:22:34,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 17:22:34,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 17:22:34,809 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 17:22:34,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 17:22:34,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 17:22:34,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 17:22:34,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 17:22:34,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 17:22:34,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 17:22:34,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 17:22:34,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 17:22:34,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 17:22:34,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 17:22:34,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 17:22:34,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 17:22:34,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 17:22:34,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 17:22:34,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 17:22:34,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 17:22:34,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 17:22:34,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 17:22:34,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 17:22:34,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 17:22:34,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 17:22:34,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 17:22:34,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 17:22:34,843 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 17:22:34,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 17:22:34,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 17:22:34,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 17:22:34,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 17:22:34,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 17:22:34,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 17:22:34,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 17:22:34,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 17:22:34,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 17:22:34,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 17:22:34,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 17:22:34,852 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 17:22:34,878 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 17:22:34,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 17:22:34,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 17:22:34,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 17:22:34,880 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 17:22:34,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 17:22:34,880 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 17:22:34,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 17:22:34,881 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 17:22:34,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 17:22:34,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 17:22:34,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 17:22:34,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 17:22:34,882 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 17:22:34,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 17:22:34,882 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 17:22:34,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 17:22:34,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 17:22:34,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 17:22:34,883 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 17:22:34,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 17:22:34,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 17:22:34,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 17:22:34,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 17:22:34,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 17:22:34,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 17:22:34,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 17:22:34,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 17:22:34,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 17:22:34,885 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;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;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;log-additional-information=true;
[2020-09-24 17:22:35,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 17:22:35,397 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 17:22:35,401 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 17:22:35,403 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 17:22:35,403 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 17:22:35,405 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c
[2020-09-24 17:22:35,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f29d2638/d192348910fd47aaa27bbc139a4ab12e/FLAG0e925846c
[2020-09-24 17:22:36,041 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 17:22:36,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/mod3.c
[2020-09-24 17:22:36,055 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f29d2638/d192348910fd47aaa27bbc139a4ab12e/FLAG0e925846c
[2020-09-24 17:22:36,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f29d2638/d192348910fd47aaa27bbc139a4ab12e
[2020-09-24 17:22:36,382 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 17:22:36,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 17:22:36,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 17:22:36,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 17:22:36,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 17:22:36,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:22:36" (1/1) ...
[2020-09-24 17:22:36,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2016f310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:36, skipping insertion in model container
[2020-09-24 17:22:36,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:22:36" (1/1) ...
[2020-09-24 17:22:36,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 17:22:36,443 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 17:22:36,679 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 17:22:36,686 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 17:22:36,708 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 17:22:36,724 INFO L208 MainTranslator]: Completed translation
[2020-09-24 17:22:36,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:36 WrapperNode
[2020-09-24 17:22:36,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 17:22:36,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 17:22:36,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 17:22:36,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 17:22:36,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:36" (1/1) ...
[2020-09-24 17:22:36,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:36" (1/1) ...
[2020-09-24 17:22:36,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:36" (1/1) ...
[2020-09-24 17:22:36,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:36" (1/1) ...
[2020-09-24 17:22:36,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:36" (1/1) ...
[2020-09-24 17:22:36,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:36" (1/1) ...
[2020-09-24 17:22:36,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:36" (1/1) ...
[2020-09-24 17:22:36,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 17:22:36,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 17:22:36,842 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 17:22:36,842 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 17:22:36,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:36" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 17:22:36,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 17:22:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 17:22:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-24 17:22:36,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 17:22:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 17:22:36,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 17:22:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-24 17:22:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 17:22:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 17:22:36,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 17:22:37,201 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 17:22:37,201 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 17:22:37,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:22:37 BoogieIcfgContainer
[2020-09-24 17:22:37,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 17:22:37,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 17:22:37,212 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 17:22:37,216 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 17:22:37,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:22:36" (1/3) ...
[2020-09-24 17:22:37,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe3ff14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:22:37, skipping insertion in model container
[2020-09-24 17:22:37,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:22:36" (2/3) ...
[2020-09-24 17:22:37,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe3ff14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:22:37, skipping insertion in model container
[2020-09-24 17:22:37,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:22:37" (3/3) ...
[2020-09-24 17:22:37,220 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c
[2020-09-24 17:22:37,237 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 17:22:37,248 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 17:22:37,277 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 17:22:37,313 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 17:22:37,313 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 17:22:37,313 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 17:22:37,314 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 17:22:37,316 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 17:22:37,316 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 17:22:37,316 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 17:22:37,316 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 17:22:37,345 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states.
[2020-09-24 17:22:37,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-09-24 17:22:37,353 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 17:22:37,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 17:22:37,354 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:22:37,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:22:37,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1436140310, now seen corresponding path program 1 times
[2020-09-24 17:22:37,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:22:37,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656570931]
[2020-09-24 17:22:37,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:22:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:22:37,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:22:37,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:22:37,622 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:22:37,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21
[2020-09-24 17:22:37,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 17:22:37,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154
[2020-09-24 17:22:37,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:22:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 17:22:37,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-24 17:22:37,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3
[2020-09-24 17:22:37,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 17:22:37,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 17:22:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:22:37,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:22:37,740 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:22:37,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 17:22:37,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:22:37,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 17:22:37,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:22:37,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 17:22:37,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:22:37,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 17:22:37,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 17:22:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 17:22:37,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656570931]
[2020-09-24 17:22:37,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 17:22:37,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 17:22:37,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228693124]
[2020-09-24 17:22:37,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 17:22:37,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 17:22:37,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 17:22:37,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 17:22:37,784 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states.
[2020-09-24 17:22:37,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 17:22:37,853 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions.
[2020-09-24 17:22:37,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-09-24 17:22:37,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12
[2020-09-24 17:22:37,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 17:22:37,870 INFO L225 Difference]: With dead ends: 72
[2020-09-24 17:22:37,870 INFO L226 Difference]: Without dead ends: 47
[2020-09-24 17:22:37,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 17:22:37,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2020-09-24 17:22:37,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32.
[2020-09-24 17:22:37,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2020-09-24 17:22:37,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions.
[2020-09-24 17:22:37,941 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 12
[2020-09-24 17:22:37,941 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 17:22:37,941 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions.
[2020-09-24 17:22:37,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 17:22:37,942 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions.
[2020-09-24 17:22:37,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-09-24 17:22:37,943 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 17:22:37,943 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 17:22:37,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 17:22:37,944 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:22:37,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:22:37,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1704587139, now seen corresponding path program 1 times
[2020-09-24 17:22:37,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:22:37,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190577018]
[2020-09-24 17:22:37,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:22:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:22:38,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:22:38,474 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:22:38,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29
[2020-09-24 17:22:38,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:22:38,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411
[2020-09-24 17:22:38,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:22:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 17:22:38,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16
[2020-09-24 17:22:38,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-09-24 17:22:38,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 17:22:38,810 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 21
[2020-09-24 17:22:38,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 17:22:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:22:38,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:22:38,933 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:22:38,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 17:22:38,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:22:38,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 17:22:38,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:22:38,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 17:22:38,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:22:38,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 17:22:38,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:22:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 17:22:38,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190577018]
[2020-09-24 17:22:38,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 17:22:38,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-24 17:22:38,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322405576]
[2020-09-24 17:22:38,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-24 17:22:38,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 17:22:38,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-24 17:22:38,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-24 17:22:38,945 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 6 states.
[2020-09-24 17:22:45,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 17:22:45,600 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions.
[2020-09-24 17:22:45,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-24 17:22:45,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20
[2020-09-24 17:22:45,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 17:22:45,602 INFO L225 Difference]: With dead ends: 74
[2020-09-24 17:22:45,603 INFO L226 Difference]: Without dead ends: 43
[2020-09-24 17:22:45,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-09-24 17:22:45,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2020-09-24 17:22:45,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37.
[2020-09-24 17:22:45,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states.
[2020-09-24 17:22:45,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions.
[2020-09-24 17:22:45,611 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 20
[2020-09-24 17:22:45,612 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 17:22:45,612 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions.
[2020-09-24 17:22:45,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-24 17:22:45,612 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions.
[2020-09-24 17:22:45,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-09-24 17:22:45,613 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 17:22:45,614 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 17:22:45,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 17:22:45,614 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 17:22:45,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 17:22:45,614 INFO L82 PathProgramCache]: Analyzing trace with hash -110349398, now seen corresponding path program 1 times
[2020-09-24 17:22:45,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 17:22:45,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136175457]
[2020-09-24 17:22:45,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 17:22:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:22:45,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:22:45,918 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:22:45,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30
[2020-09-24 17:22:45,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:22:45,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275
[2020-09-24 17:22:45,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:22:45,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 17:22:45,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17
[2020-09-24 17:22:45,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-09-24 17:22:45,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 17:22:46,180 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 18
[2020-09-24 17:22:46,350 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 17
[2020-09-24 17:22:46,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 17:22:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 17:22:46,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 17:22:46,380 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 17:22:46,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 17:22:46,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 17:22:46,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 17:22:46,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM
[2020-09-24 17:22:46,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 17:22:46,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 17:22:46,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 17:22:46,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 17:22:46,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 17:22:46,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136175457]
[2020-09-24 17:22:46,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 17:22:46,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-24 17:22:46,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087895113]
[2020-09-24 17:22:46,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-24 17:22:46,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 17:22:46,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-24 17:22:46,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-24 17:22:46,390 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 6 states.
[2020-09-24 17:22:48,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 17:22:48,591 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions.
[2020-09-24 17:22:48,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-24 17:22:48,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21
[2020-09-24 17:22:48,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 17:22:48,596 INFO L225 Difference]: With dead ends: 75
[2020-09-24 17:22:48,596 INFO L226 Difference]: Without dead ends: 0
[2020-09-24 17:22:48,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-09-24 17:22:48,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-24 17:22:48,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-24 17:22:48,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-24 17:22:48,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-24 17:22:48,599 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21
[2020-09-24 17:22:48,601 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 17:22:48,601 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-24 17:22:48,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-24 17:22:48,601 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-24 17:22:48,602 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-24 17:22:48,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 17:22:48,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-24 17:22:48,714 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-24 17:22:48,715 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-24 17:22:48,715 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-24 17:22:48,715 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-24 17:22:48,715 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-24 17:22:48,715 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-24 17:22:48,717 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (= (let ((.cse0 (div main_~x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ main_~x~0 .cse2) 3))) (+ (* .cse0 4294967296) (* .cse1 3) (* (div (+ main_~x~0 .cse2 (* .cse1 (- 3))) 4294967296) 4294967296))))) main_~x~0)
[2020-09-24 17:22:48,717 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 33) no Hoare annotation was computed.
[2020-09-24 17:22:48,717 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed.
[2020-09-24 17:22:48,717 INFO L268 CegarLoopResult]: For program point L23-1(lines 23 26) no Hoare annotation was computed.
[2020-09-24 17:22:48,718 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed.
[2020-09-24 17:22:48,718 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed.
[2020-09-24 17:22:48,718 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed.
[2020-09-24 17:22:48,718 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed.
[2020-09-24 17:22:48,718 INFO L264 CegarLoopResult]: At program point L23-5(lines 16 29) the Hoare annotation is: (or (= (let ((.cse0 (div main_~x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ main_~x~0 .cse2) 3))) (+ (* .cse0 4294967296) (* .cse1 3) (* (div (+ main_~x~0 .cse2 (* .cse1 (- 3))) 4294967296) 4294967296))))) main_~x~0) (and (<= (div main_~y~0 4294967296) 0) (<= 1 main_~y~0)))
[2020-09-24 17:22:48,719 INFO L268 CegarLoopResult]: For program point L17(lines 17 28) no Hoare annotation was computed.
[2020-09-24 17:22:48,719 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 33) no Hoare annotation was computed.
[2020-09-24 17:22:48,719 INFO L268 CegarLoopResult]: For program point L30(lines 30 31) no Hoare annotation was computed.
[2020-09-24 17:22:48,719 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 12 33) the Hoare annotation is: true
[2020-09-24 17:22:48,719 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed.
[2020-09-24 17:22:48,719 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed.
[2020-09-24 17:22:48,720 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed.
[2020-09-24 17:22:48,720 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed.
[2020-09-24 17:22:48,720 INFO L268 CegarLoopResult]: For program point L20(lines 20 27) no Hoare annotation was computed.
[2020-09-24 17:22:48,721 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed.
[2020-09-24 17:22:48,721 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed.
[2020-09-24 17:22:48,721 INFO L268 CegarLoopResult]: For program point L16-1(lines 16 29) no Hoare annotation was computed.
[2020-09-24 17:22:48,721 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed.
[2020-09-24 17:22:48,721 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed.
[2020-09-24 17:22:48,721 INFO L268 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed.
[2020-09-24 17:22:48,722 INFO L268 CegarLoopResult]: For program point L16-5(lines 12 33) no Hoare annotation was computed.
[2020-09-24 17:22:48,722 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 10) the Hoare annotation is: true
[2020-09-24 17:22:48,722 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 10) no Hoare annotation was computed.
[2020-09-24 17:22:48,722 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed.
[2020-09-24 17:22:48,722 INFO L268 CegarLoopResult]: For program point L7(lines 7 8) no Hoare annotation was computed.
[2020-09-24 17:22:48,722 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 10) no Hoare annotation was computed.
[2020-09-24 17:22:48,723 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed.
[2020-09-24 17:22:48,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:22:48 BoogieIcfgContainer
[2020-09-24 17:22:48,763 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 17:22:48,768 INFO L168 Benchmark]: Toolchain (without parser) took 12381.02 ms. Allocated memory was 139.5 MB in the beginning and 245.9 MB in the end (delta: 106.4 MB). Free memory was 102.6 MB in the beginning and 207.8 MB in the end (delta: -105.2 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB.
[2020-09-24 17:22:48,771 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 17:22:48,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.38 ms. Allocated memory is still 139.5 MB. Free memory was 102.0 MB in the beginning and 92.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB.
[2020-09-24 17:22:48,776 INFO L168 Benchmark]: Boogie Preprocessor took 115.16 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 92.7 MB in the beginning and 180.6 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB.
[2020-09-24 17:22:48,778 INFO L168 Benchmark]: RCFGBuilder took 368.86 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 166.8 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB.
[2020-09-24 17:22:48,785 INFO L168 Benchmark]: TraceAbstraction took 11551.57 ms. Allocated memory was 201.9 MB in the beginning and 245.9 MB in the end (delta: 44.0 MB). Free memory was 166.1 MB in the beginning and 207.8 MB in the end (delta: -41.7 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB.
[2020-09-24 17:22:48,795 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.31 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 333.38 ms. Allocated memory is still 139.5 MB. Free memory was 102.0 MB in the beginning and 92.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 115.16 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 92.7 MB in the beginning and 180.6 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 368.86 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 166.8 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 11551.57 ms. Allocated memory was 201.9 MB in the beginning and 245.9 MB in the end (delta: 44.0 MB). Free memory was 166.1 MB in the beginning and 207.8 MB in the end (delta: -41.7 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable
For all program executions holds that call of __VERIFIER_error() unreachable at this location
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 16]: Loop Invariant
Derived loop invariant: x / 4294967296 * 4294967296 + (x + x / 4294967296 * -4294967296) / 3 * 3 + (x + x / 4294967296 * -4294967296 + (x + x / 4294967296 * -4294967296) / 3 * -3) / 4294967296 * 4294967296 == x || (y / 4294967296 <= 0 && 1 <= y)
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 8.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 116 SDtfs, 41 SDslu, 282 SDs, 0 SdLazy, 85 SolverSat, 8 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 8.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 16 NumberOfFragments, 97 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 83 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 13068 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 4/4 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...