/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c
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This is Ultimate 0.1.25-c90d42b
[2020-09-24 14:56:37,957 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 14:56:37,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 14:56:38,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 14:56:38,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 14:56:38,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 14:56:38,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 14:56:38,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 14:56:38,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 14:56:38,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 14:56:38,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 14:56:38,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 14:56:38,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 14:56:38,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 14:56:38,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 14:56:38,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 14:56:38,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 14:56:38,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 14:56:38,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 14:56:38,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 14:56:38,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 14:56:38,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 14:56:38,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 14:56:38,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 14:56:38,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 14:56:38,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 14:56:38,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 14:56:38,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 14:56:38,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 14:56:38,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 14:56:38,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 14:56:38,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 14:56:38,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 14:56:38,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 14:56:38,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 14:56:38,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 14:56:38,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 14:56:38,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 14:56:38,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-24 14:56:38,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 14:56:38,090 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 14:56:38,142 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 14:56:38,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 14:56:38,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 14:56:38,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 14:56:38,146 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 14:56:38,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 14:56:38,147 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 14:56:38,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 14:56:38,148 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 14:56:38,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 14:56:38,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 14:56:38,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 14:56:38,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 14:56:38,150 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 14:56:38,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 14:56:38,151 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 14:56:38,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 14:56:38,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 14:56:38,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 14:56:38,152 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 14:56:38,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 14:56:38,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 14:56:38,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 14:56:38,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 14:56:38,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 14:56:38,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 14:56:38,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 14:56:38,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 14:56:38,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 14:56:38,154 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 -> false
[2020-09-24 14:56:38,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 14:56:38,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 14:56:38,691 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 14:56:38,693 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 14:56:38,693 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 14:56:38,694 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c
[2020-09-24 14:56:38,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/822912469/b17fc21e35f340cba64cc51f5446aabd/FLAG8d8e50495
[2020-09-24 14:56:39,310 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 14:56:39,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c
[2020-09-24 14:56:39,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/822912469/b17fc21e35f340cba64cc51f5446aabd/FLAG8d8e50495
[2020-09-24 14:56:39,620 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/822912469/b17fc21e35f340cba64cc51f5446aabd
[2020-09-24 14:56:39,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 14:56:39,639 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 14:56:39,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 14:56:39,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 14:56:39,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 14:56:39,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:56:39" (1/1) ...
[2020-09-24 14:56:39,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788ef5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:56:39, skipping insertion in model container
[2020-09-24 14:56:39,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:56:39" (1/1) ...
[2020-09-24 14:56:39,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 14:56:39,683 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 14:56:39,878 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 14:56:39,883 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 14:56:39,900 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 14:56:39,914 INFO L208 MainTranslator]: Completed translation
[2020-09-24 14:56:39,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:56:39 WrapperNode
[2020-09-24 14:56:39,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 14:56:39,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 14:56:39,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 14:56:39,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 14:56:39,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:56:39" (1/1) ...
[2020-09-24 14:56:39,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:56:39" (1/1) ...
[2020-09-24 14:56:39,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:56:39" (1/1) ...
[2020-09-24 14:56:39,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:56:39" (1/1) ...
[2020-09-24 14:56:39,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:56:39" (1/1) ...
[2020-09-24 14:56:39,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:56:39" (1/1) ...
[2020-09-24 14:56:39,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:56:39" (1/1) ...
[2020-09-24 14:56:39,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 14:56:39,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 14:56:39,946 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 14:56:39,946 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 14:56:39,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:56:39" (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 14:56:40,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 14:56:40,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 14:56:40,110 INFO L138 BoogieDeclarations]: Found implementation of procedure id
[2020-09-24 14:56:40,110 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 14:56:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 14:56:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 14:56:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure id
[2020-09-24 14:56:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 14:56:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 14:56:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 14:56:40,334 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 14:56:40,335 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-24 14:56:40,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:56:40 BoogieIcfgContainer
[2020-09-24 14:56:40,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 14:56:40,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 14:56:40,342 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 14:56:40,345 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 14:56:40,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:56:39" (1/3) ...
[2020-09-24 14:56:40,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f9a53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:56:40, skipping insertion in model container
[2020-09-24 14:56:40,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:56:39" (2/3) ...
[2020-09-24 14:56:40,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f9a53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:56:40, skipping insertion in model container
[2020-09-24 14:56:40,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:56:40" (3/3) ...
[2020-09-24 14:56:40,351 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b5_o10-2.c
[2020-09-24 14:56:40,363 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 14:56:40,374 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 14:56:40,410 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 14:56:40,450 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 14:56:40,451 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 14:56:40,451 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 14:56:40,451 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 14:56:40,451 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 14:56:40,452 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 14:56:40,452 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 14:56:40,452 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 14:56:40,480 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states.
[2020-09-24 14:56:40,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-09-24 14:56:40,491 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 14:56:40,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:56:40,493 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:56:40,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:56:40,502 INFO L82 PathProgramCache]: Analyzing trace with hash 856871792, now seen corresponding path program 1 times
[2020-09-24 14:56:40,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:56:40,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697275550]
[2020-09-24 14:56:40,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:56:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:40,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:56:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:40,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:56:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:40,769 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 14:56:40,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697275550]
[2020-09-24 14:56:40,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 14:56:40,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 14:56:40,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519355227]
[2020-09-24 14:56:40,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 14:56:40,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:56:40,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 14:56:40,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 14:56:40,803 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states.
[2020-09-24 14:56:40,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:56:40,933 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions.
[2020-09-24 14:56:40,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-24 14:56:40,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18
[2020-09-24 14:56:40,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:56:40,958 INFO L225 Difference]: With dead ends: 44
[2020-09-24 14:56:40,958 INFO L226 Difference]: Without dead ends: 28
[2020-09-24 14:56:40,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-24 14:56:40,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2020-09-24 14:56:41,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2020-09-24 14:56:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2020-09-24 14:56:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions.
[2020-09-24 14:56:41,043 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 18
[2020-09-24 14:56:41,045 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:56:41,045 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions.
[2020-09-24 14:56:41,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 14:56:41,045 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions.
[2020-09-24 14:56:41,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-09-24 14:56:41,051 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 14:56:41,052 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:56:41,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 14:56:41,053 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:56:41,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:56:41,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1774609951, now seen corresponding path program 1 times
[2020-09-24 14:56:41,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:56:41,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542522793]
[2020-09-24 14:56:41,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:56:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:41,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:56:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:41,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:56:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:41,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:56:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:41,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2020-09-24 14:56:41,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542522793]
[2020-09-24 14:56:41,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 14:56:41,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 14:56:41,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317248688]
[2020-09-24 14:56:41,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 14:56:41,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:56:41,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 14:56:41,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 14:56:41,215 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 5 states.
[2020-09-24 14:56:41,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:56:41,275 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions.
[2020-09-24 14:56:41,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-24 14:56:41,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28
[2020-09-24 14:56:41,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:56:41,278 INFO L225 Difference]: With dead ends: 49
[2020-09-24 14:56:41,278 INFO L226 Difference]: Without dead ends: 35
[2020-09-24 14:56:41,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-24 14:56:41,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2020-09-24 14:56:41,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32.
[2020-09-24 14:56:41,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2020-09-24 14:56:41,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions.
[2020-09-24 14:56:41,288 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28
[2020-09-24 14:56:41,289 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:56:41,289 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions.
[2020-09-24 14:56:41,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 14:56:41,289 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions.
[2020-09-24 14:56:41,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-09-24 14:56:41,291 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 14:56:41,291 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:56:41,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 14:56:41,292 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:56:41,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:56:41,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1645321695, now seen corresponding path program 1 times
[2020-09-24 14:56:41,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:56:41,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115385346]
[2020-09-24 14:56:41,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:56:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:41,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:56:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:41,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:56:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:41,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:56:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2020-09-24 14:56:41,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115385346]
[2020-09-24 14:56:41,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 14:56:41,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-09-24 14:56:41,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893213137]
[2020-09-24 14:56:41,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 14:56:41,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:56:41,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 14:56:41,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2020-09-24 14:56:41,461 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 8 states.
[2020-09-24 14:56:41,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:56:41,555 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions.
[2020-09-24 14:56:41,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2020-09-24 14:56:41,555 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28
[2020-09-24 14:56:41,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:56:41,557 INFO L225 Difference]: With dead ends: 41
[2020-09-24 14:56:41,557 INFO L226 Difference]: Without dead ends: 35
[2020-09-24 14:56:41,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110
[2020-09-24 14:56:41,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2020-09-24 14:56:41,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35.
[2020-09-24 14:56:41,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2020-09-24 14:56:41,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions.
[2020-09-24 14:56:41,566 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 28
[2020-09-24 14:56:41,566 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:56:41,567 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions.
[2020-09-24 14:56:41,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 14:56:41,567 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions.
[2020-09-24 14:56:41,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2020-09-24 14:56:41,568 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 14:56:41,569 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:56:41,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 14:56:41,569 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:56:41,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:56:41,570 INFO L82 PathProgramCache]: Analyzing trace with hash 170302224, now seen corresponding path program 1 times
[2020-09-24 14:56:41,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:56:41,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545961362]
[2020-09-24 14:56:41,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:56:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:41,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:56:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:41,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:56:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:41,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:56:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:41,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:56:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:41,767 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2020-09-24 14:56:41,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545961362]
[2020-09-24 14:56:41,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 14:56:41,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 14:56:41,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520737600]
[2020-09-24 14:56:41,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 14:56:41,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:56:41,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 14:56:41,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 14:56:41,770 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 5 states.
[2020-09-24 14:56:41,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:56:41,802 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions.
[2020-09-24 14:56:41,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-24 14:56:41,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38
[2020-09-24 14:56:41,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:56:41,805 INFO L225 Difference]: With dead ends: 43
[2020-09-24 14:56:41,805 INFO L226 Difference]: Without dead ends: 37
[2020-09-24 14:56:41,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-24 14:56:41,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2020-09-24 14:56:41,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35.
[2020-09-24 14:56:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2020-09-24 14:56:41,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions.
[2020-09-24 14:56:41,823 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 38
[2020-09-24 14:56:41,824 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:56:41,824 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions.
[2020-09-24 14:56:41,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 14:56:41,824 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions.
[2020-09-24 14:56:41,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2020-09-24 14:56:41,825 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 14:56:41,826 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:56:41,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 14:56:41,826 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:56:41,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:56:41,827 INFO L82 PathProgramCache]: Analyzing trace with hash 41013968, now seen corresponding path program 2 times
[2020-09-24 14:56:41,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:56:41,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945356578]
[2020-09-24 14:56:41,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:56:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:41,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:56:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:41,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:56:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:41,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:56:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:42,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:56:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:42,029 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2020-09-24 14:56:42,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945356578]
[2020-09-24 14:56:42,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 14:56:42,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-09-24 14:56:42,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860265011]
[2020-09-24 14:56:42,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-24 14:56:42,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:56:42,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-24 14:56:42,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2020-09-24 14:56:42,032 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 11 states.
[2020-09-24 14:56:42,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:56:42,182 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions.
[2020-09-24 14:56:42,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-09-24 14:56:42,183 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38
[2020-09-24 14:56:42,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:56:42,185 INFO L225 Difference]: With dead ends: 64
[2020-09-24 14:56:42,186 INFO L226 Difference]: Without dead ends: 44
[2020-09-24 14:56:42,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240
[2020-09-24 14:56:42,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2020-09-24 14:56:42,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42.
[2020-09-24 14:56:42,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states.
[2020-09-24 14:56:42,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions.
[2020-09-24 14:56:42,200 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 38
[2020-09-24 14:56:42,202 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:56:42,203 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions.
[2020-09-24 14:56:42,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-24 14:56:42,203 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions.
[2020-09-24 14:56:42,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2020-09-24 14:56:42,205 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 14:56:42,208 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:56:42,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 14:56:42,209 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:56:42,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:56:42,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1045014785, now seen corresponding path program 3 times
[2020-09-24 14:56:42,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:56:42,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076032684]
[2020-09-24 14:56:42,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:56:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:42,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:56:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:42,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:56:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:42,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:56:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:42,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:56:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:42,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:56:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:42,496 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2020-09-24 14:56:42,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076032684]
[2020-09-24 14:56:42,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 14:56:42,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2020-09-24 14:56:42,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894412306]
[2020-09-24 14:56:42,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-09-24 14:56:42,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:56:42,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-09-24 14:56:42,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182
[2020-09-24 14:56:42,499 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 14 states.
[2020-09-24 14:56:42,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:56:42,645 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions.
[2020-09-24 14:56:42,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2020-09-24 14:56:42,645 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48
[2020-09-24 14:56:42,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:56:42,648 INFO L225 Difference]: With dead ends: 71
[2020-09-24 14:56:42,648 INFO L226 Difference]: Without dead ends: 51
[2020-09-24 14:56:42,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420
[2020-09-24 14:56:42,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2020-09-24 14:56:42,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49.
[2020-09-24 14:56:42,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states.
[2020-09-24 14:56:42,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions.
[2020-09-24 14:56:42,666 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 48
[2020-09-24 14:56:42,666 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:56:42,667 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions.
[2020-09-24 14:56:42,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-09-24 14:56:42,671 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions.
[2020-09-24 14:56:42,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2020-09-24 14:56:42,672 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 14:56:42,673 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:56:42,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-24 14:56:42,673 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:56:42,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:56:42,674 INFO L82 PathProgramCache]: Analyzing trace with hash 485800496, now seen corresponding path program 4 times
[2020-09-24 14:56:42,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:56:42,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370124049]
[2020-09-24 14:56:42,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:56:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:42,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:56:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:42,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:56:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:42,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:56:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:42,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:56:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:42,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:56:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:43,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:56:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2020-09-24 14:56:43,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370124049]
[2020-09-24 14:56:43,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 14:56:43,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17
[2020-09-24 14:56:43,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524509666]
[2020-09-24 14:56:43,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-09-24 14:56:43,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:56:43,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-09-24 14:56:43,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272
[2020-09-24 14:56:43,079 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 17 states.
[2020-09-24 14:56:43,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:56:43,268 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions.
[2020-09-24 14:56:43,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2020-09-24 14:56:43,268 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58
[2020-09-24 14:56:43,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:56:43,270 INFO L225 Difference]: With dead ends: 78
[2020-09-24 14:56:43,270 INFO L226 Difference]: Without dead ends: 58
[2020-09-24 14:56:43,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650
[2020-09-24 14:56:43,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2020-09-24 14:56:43,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56.
[2020-09-24 14:56:43,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states.
[2020-09-24 14:56:43,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions.
[2020-09-24 14:56:43,278 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 58
[2020-09-24 14:56:43,279 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:56:43,279 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions.
[2020-09-24 14:56:43,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-09-24 14:56:43,279 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions.
[2020-09-24 14:56:43,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2020-09-24 14:56:43,280 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 14:56:43,280 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:56:43,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-09-24 14:56:43,281 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:56:43,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:56:43,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1938626529, now seen corresponding path program 5 times
[2020-09-24 14:56:43,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:56:43,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466989491]
[2020-09-24 14:56:43,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:56:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:43,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:56:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:43,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:56:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:43,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:56:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:43,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:56:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:43,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:56:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:43,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:56:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:43,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-24 14:56:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:56:43,730 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked.
[2020-09-24 14:56:43,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466989491]
[2020-09-24 14:56:43,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 14:56:43,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20
[2020-09-24 14:56:43,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246539397]
[2020-09-24 14:56:43,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-09-24 14:56:43,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:56:43,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-09-24 14:56:43,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380
[2020-09-24 14:56:43,734 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 20 states.
[2020-09-24 14:56:43,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:56:43,950 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions.
[2020-09-24 14:56:43,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2020-09-24 14:56:43,950 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 68
[2020-09-24 14:56:43,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:56:43,951 INFO L225 Difference]: With dead ends: 76
[2020-09-24 14:56:43,951 INFO L226 Difference]: Without dead ends: 0
[2020-09-24 14:56:43,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930
[2020-09-24 14:56:43,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-24 14:56:43,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-24 14:56:43,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-24 14:56:43,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-24 14:56:43,954 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68
[2020-09-24 14:56:43,954 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:56:43,954 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-24 14:56:43,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-09-24 14:56:43,955 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-24 14:56:43,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-24 14:56:43,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-09-24 14:56:43,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-24 14:56:43,982 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-24 14:56:43,982 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-24 14:56:43,982 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-24 14:56:43,982 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-24 14:56:43,982 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-24 14:56:43,982 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-24 14:56:43,983 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed.
[2020-09-24 14:56:43,983 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true
[2020-09-24 14:56:43,983 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed.
[2020-09-24 14:56:43,983 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed.
[2020-09-24 14:56:43,983 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed.
[2020-09-24 14:56:43,983 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true
[2020-09-24 14:56:43,983 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed.
[2020-09-24 14:56:43,984 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed.
[2020-09-24 14:56:43,984 INFO L268 CegarLoopResult]: For program point L14-2(lines 11 17) no Hoare annotation was computed.
[2020-09-24 14:56:43,984 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed.
[2020-09-24 14:56:43,984 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed.
[2020-09-24 14:56:43,984 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed.
[2020-09-24 14:56:43,984 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 9) no Hoare annotation was computed.
[2020-09-24 14:56:43,984 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 9) no Hoare annotation was computed.
[2020-09-24 14:56:43,985 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 9) the Hoare annotation is: true
[2020-09-24 14:56:43,985 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed.
[2020-09-24 14:56:43,985 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed.
[2020-09-24 14:56:43,985 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true
[2020-09-24 14:56:43,985 INFO L268 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed.
[2020-09-24 14:56:43,985 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed.
[2020-09-24 14:56:43,985 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed.
[2020-09-24 14:56:43,986 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed.
[2020-09-24 14:56:43,986 INFO L268 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed.
[2020-09-24 14:56:43,986 INFO L268 CegarLoopResult]: For program point L6-3(line 6) no Hoare annotation was computed.
[2020-09-24 14:56:43,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:56:43 BoogieIcfgContainer
[2020-09-24 14:56:43,994 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 14:56:43,998 INFO L168 Benchmark]: Toolchain (without parser) took 4362.02 ms. Allocated memory was 140.0 MB in the beginning and 245.4 MB in the end (delta: 105.4 MB). Free memory was 103.3 MB in the beginning and 196.8 MB in the end (delta: -93.5 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB.
[2020-09-24 14:56:43,998 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 140.0 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 14:56:43,999 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.23 ms. Allocated memory is still 140.0 MB. Free memory was 102.6 MB in the beginning and 93.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB.
[2020-09-24 14:56:44,000 INFO L168 Benchmark]: Boogie Preprocessor took 30.04 ms. Allocated memory is still 140.0 MB. Free memory was 93.4 MB in the beginning and 92.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
[2020-09-24 14:56:44,001 INFO L168 Benchmark]: RCFGBuilder took 394.55 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.1 MB in the beginning and 170.0 MB in the end (delta: -77.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB.
[2020-09-24 14:56:44,003 INFO L168 Benchmark]: TraceAbstraction took 3652.59 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 169.3 MB in the beginning and 196.8 MB in the end (delta: -27.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB.
[2020-09-24 14:56:44,006 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.56 ms. Allocated memory is still 140.0 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 275.23 ms. Allocated memory is still 140.0 MB. Free memory was 102.6 MB in the beginning and 93.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 30.04 ms. Allocated memory is still 140.0 MB. Free memory was 93.4 MB in the beginning and 92.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 394.55 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.1 MB in the beginning and 170.0 MB in the end (delta: -77.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 3652.59 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 169.3 MB in the beginning and 196.8 MB in the end (delta: -27.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 15]: call of __VERIFIER_error() unreachable
For all program executions holds that call of __VERIFIER_error() unreachable at this location
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 8, TraceHistogramMax: 6, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 199 SDtfs, 91 SDslu, 983 SDs, 0 SdLazy, 371 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 11 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 324 NumberOfCodeBlocks, 324 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 316 ConstructedInterpolants, 0 QuantifiedInterpolants, 29494 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 111/281 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...