/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c
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This is Ultimate 0.2.0-b8ad66e
[2020-10-23 18:13:20,568 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-10-23 18:13:20,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-23 18:13:20,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-23 18:13:20,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-23 18:13:20,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-23 18:13:20,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-23 18:13:20,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
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[2020-10-23 18:13:20,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-23 18:13:20,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
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[2020-10-23 18:13:20,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-23 18:13:20,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-23 18:13:20,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-23 18:13:20,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-23 18:13:20,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-23 18:13:20,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-23 18:13:20,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-10-23 18:13:20,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2020-10-23 18:13:20,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-10-23 18:13:20,792 INFO L113 SettingsManager]: Loading preferences was successful
[2020-10-23 18:13:20,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-23 18:13:20,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-23 18:13:20,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-10-23 18:13:20,796 INFO L138 SettingsManager]: * Use SBE=true
[2020-10-23 18:13:20,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-23 18:13:20,797 INFO L138 SettingsManager]: * sizeof long=4
[2020-10-23 18:13:20,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-10-23 18:13:20,797 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-10-23 18:13:20,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-10-23 18:13:20,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-10-23 18:13:20,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-23 18:13:20,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-10-23 18:13:20,799 INFO L138 SettingsManager]: * sizeof long double=12
[2020-10-23 18:13:20,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-10-23 18:13:20,800 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-10-23 18:13:20,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-10-23 18:13:20,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-23 18:13:20,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-10-23 18:13:20,801 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-10-23 18:13:20,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-10-23 18:13:20,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-23 18:13:20,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-23 18:13:20,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-10-23 18:13:20,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-23 18:13:20,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-10-23 18:13:20,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-23 18:13:20,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-23 18:13:20,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-10-23 18:13:20,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-10-23 18:13:21,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-23 18:13:21,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-23 18:13:21,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-23 18:13:21,284 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-10-23 18:13:21,285 INFO L275 PluginConnector]: CDTParser initialized
[2020-10-23 18:13:21,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c
[2020-10-23 18:13:21,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362e17456/92acbd6621dc454eb8abcc09eec94a27/FLAGbf160d96e
[2020-10-23 18:13:22,096 INFO L306 CDTParser]: Found 1 translation units.
[2020-10-23 18:13:22,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c
[2020-10-23 18:13:22,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362e17456/92acbd6621dc454eb8abcc09eec94a27/FLAGbf160d96e
[2020-10-23 18:13:22,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362e17456/92acbd6621dc454eb8abcc09eec94a27
[2020-10-23 18:13:22,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-23 18:13:22,465 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-23 18:13:22,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-23 18:13:22,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-23 18:13:22,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-23 18:13:22,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:13:22" (1/1) ...
[2020-10-23 18:13:22,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@545e12b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:13:22, skipping insertion in model container
[2020-10-23 18:13:22,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:13:22" (1/1) ...
[2020-10-23 18:13:22,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-10-23 18:13:22,507 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-10-23 18:13:22,656 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-23 18:13:22,667 INFO L203 MainTranslator]: Completed pre-run
[2020-10-23 18:13:22,687 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-23 18:13:22,705 INFO L208 MainTranslator]: Completed translation
[2020-10-23 18:13:22,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:13:22 WrapperNode
[2020-10-23 18:13:22,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-23 18:13:22,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-23 18:13:22,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-23 18:13:22,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-10-23 18:13:22,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:13:22" (1/1) ...
[2020-10-23 18:13:22,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:13:22" (1/1) ...
[2020-10-23 18:13:22,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:13:22" (1/1) ...
[2020-10-23 18:13:22,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:13:22" (1/1) ...
[2020-10-23 18:13:22,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:13:22" (1/1) ...
[2020-10-23 18:13:22,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:13:22" (1/1) ...
[2020-10-23 18:13:22,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:13:22" (1/1) ...
[2020-10-23 18:13:22,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-23 18:13:22,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-23 18:13:22,744 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-10-23 18:13:22,744 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-10-23 18:13:22,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:13:22" (1/1) ...
No working directory specified, using /storage/repos/ultimate/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
[2020-10-23 18:13:22,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-23 18:13:22,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-23 18:13:22,835 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-23 18:13:22,836 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1
[2020-10-23 18:13:22,836 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2
[2020-10-23 18:13:22,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-10-23 18:13:22,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-23 18:13:22,836 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-10-23 18:13:22,836 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-23 18:13:22,837 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-23 18:13:22,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-23 18:13:22,837 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1
[2020-10-23 18:13:22,837 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2
[2020-10-23 18:13:22,837 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-10-23 18:13:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-23 18:13:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-23 18:13:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-23 18:13:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-10-23 18:13:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-10-23 18:13:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-23 18:13:23,226 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-23 18:13:23,226 INFO L298 CfgBuilder]: Removed 0 assume(true) statements.
[2020-10-23 18:13:23,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:13:23 BoogieIcfgContainer
[2020-10-23 18:13:23,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-23 18:13:23,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-23 18:13:23,251 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-10-23 18:13:23,255 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-10-23 18:13:23,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:13:22" (1/3) ...
[2020-10-23 18:13:23,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418ce0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:13:23, skipping insertion in model container
[2020-10-23 18:13:23,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:13:22" (2/3) ...
[2020-10-23 18:13:23,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418ce0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:13:23, skipping insertion in model container
[2020-10-23 18:13:23,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:13:23" (3/3) ...
[2020-10-23 18:13:23,259 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-1.c
[2020-10-23 18:13:23,273 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-10-23 18:13:23,279 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-23 18:13:23,299 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-23 18:13:23,355 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-10-23 18:13:23,355 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-10-23 18:13:23,355 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-10-23 18:13:23,355 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-23 18:13:23,355 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-23 18:13:23,356 INFO L382 AbstractCegarLoop]: Difference is false
[2020-10-23 18:13:23,356 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-23 18:13:23,356 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-23 18:13:23,383 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states.
[2020-10-23 18:13:23,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2020-10-23 18:13:23,392 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 18:13:23,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 18:13:23,393 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:13:23,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:13:23,404 INFO L82 PathProgramCache]: Analyzing trace with hash 219823047, now seen corresponding path program 1 times
[2020-10-23 18:13:23,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:13:23,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250058952]
[2020-10-23 18:13:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:13:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:23,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 18:13:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:23,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-23 18:13:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:23,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 18:13:23,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250058952]
[2020-10-23 18:13:23,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 18:13:23,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-23 18:13:23,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860228979]
[2020-10-23 18:13:23,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-23 18:13:23,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 18:13:23,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-23 18:13:23,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-10-23 18:13:23,955 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 6 states.
[2020-10-23 18:13:24,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 18:13:24,466 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions.
[2020-10-23 18:13:24,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-10-23 18:13:24,468 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15
[2020-10-23 18:13:24,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 18:13:24,479 INFO L225 Difference]: With dead ends: 50
[2020-10-23 18:13:24,479 INFO L226 Difference]: Without dead ends: 32
[2020-10-23 18:13:24,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2020-10-23 18:13:24,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2020-10-23 18:13:24,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2020-10-23 18:13:24,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2020-10-23 18:13:24,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions.
[2020-10-23 18:13:24,572 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 15
[2020-10-23 18:13:24,572 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 18:13:24,573 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions.
[2020-10-23 18:13:24,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-23 18:13:24,573 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions.
[2020-10-23 18:13:24,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-10-23 18:13:24,575 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 18:13:24,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 18:13:24,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-23 18:13:24,576 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:13:24,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:13:24,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1220716726, now seen corresponding path program 1 times
[2020-10-23 18:13:24,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:13:24,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284648920]
[2020-10-23 18:13:24,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:13:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:24,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 18:13:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:24,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-23 18:13:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 18:13:24,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284648920]
[2020-10-23 18:13:24,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 18:13:24,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-23 18:13:24,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020454850]
[2020-10-23 18:13:24,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-23 18:13:24,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 18:13:24,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-23 18:13:24,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-10-23 18:13:24,706 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 6 states.
[2020-10-23 18:13:24,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 18:13:24,967 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions.
[2020-10-23 18:13:24,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-10-23 18:13:24,967 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16
[2020-10-23 18:13:24,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 18:13:24,969 INFO L225 Difference]: With dead ends: 39
[2020-10-23 18:13:24,969 INFO L226 Difference]: Without dead ends: 34
[2020-10-23 18:13:24,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2020-10-23 18:13:24,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2020-10-23 18:13:24,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32.
[2020-10-23 18:13:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2020-10-23 18:13:24,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions.
[2020-10-23 18:13:24,988 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 16
[2020-10-23 18:13:24,988 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 18:13:24,988 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions.
[2020-10-23 18:13:24,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-23 18:13:24,989 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions.
[2020-10-23 18:13:24,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-10-23 18:13:24,991 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 18:13:24,991 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 18:13:24,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-23 18:13:24,993 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:13:24,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:13:24,993 INFO L82 PathProgramCache]: Analyzing trace with hash 2083135015, now seen corresponding path program 1 times
[2020-10-23 18:13:24,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:13:24,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295058780]
[2020-10-23 18:13:24,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:13:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:25,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 18:13:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:25,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-23 18:13:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:25,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:25,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-10-23 18:13:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:25,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-23 18:13:25,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295058780]
[2020-10-23 18:13:25,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786897540]
[2020-10-23 18:13:25,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:13:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:25,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core
[2020-10-23 18:13:25,207 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-23 18:13:25,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-23 18:13:25,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-23 18:13:25,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2020-10-23 18:13:25,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413247424]
[2020-10-23 18:13:25,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-23 18:13:25,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 18:13:25,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-23 18:13:25,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110
[2020-10-23 18:13:25,338 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 11 states.
[2020-10-23 18:13:25,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 18:13:25,962 INFO L93 Difference]: Finished difference Result 61 states and 81 transitions.
[2020-10-23 18:13:25,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2020-10-23 18:13:25,963 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28
[2020-10-23 18:13:25,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 18:13:25,965 INFO L225 Difference]: With dead ends: 61
[2020-10-23 18:13:25,965 INFO L226 Difference]: Without dead ends: 36
[2020-10-23 18:13:25,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342
[2020-10-23 18:13:25,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2020-10-23 18:13:25,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34.
[2020-10-23 18:13:25,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2020-10-23 18:13:25,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions.
[2020-10-23 18:13:25,978 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 28
[2020-10-23 18:13:25,978 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 18:13:25,978 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions.
[2020-10-23 18:13:25,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-23 18:13:25,979 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions.
[2020-10-23 18:13:25,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2020-10-23 18:13:25,980 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 18:13:25,980 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, 1]
[2020-10-23 18:13:26,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2020-10-23 18:13:26,196 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:13:26,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:13:26,198 INFO L82 PathProgramCache]: Analyzing trace with hash 752879968, now seen corresponding path program 1 times
[2020-10-23 18:13:26,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:13:26,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238824452]
[2020-10-23 18:13:26,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:13:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:26,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 18:13:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:26,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-23 18:13:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:26,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:26,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-10-23 18:13:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:26,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-23 18:13:26,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238824452]
[2020-10-23 18:13:26,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424732489]
[2020-10-23 18:13:26,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:13:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:26,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core
[2020-10-23 18:13:26,415 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-23 18:13:26,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-23 18:13:26,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-23 18:13:26,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10
[2020-10-23 18:13:26,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614460634]
[2020-10-23 18:13:26,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-10-23 18:13:26,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 18:13:26,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-10-23 18:13:26,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90
[2020-10-23 18:13:26,473 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 10 states.
[2020-10-23 18:13:27,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 18:13:27,063 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions.
[2020-10-23 18:13:27,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2020-10-23 18:13:27,064 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29
[2020-10-23 18:13:27,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 18:13:27,068 INFO L225 Difference]: With dead ends: 57
[2020-10-23 18:13:27,068 INFO L226 Difference]: Without dead ends: 52
[2020-10-23 18:13:27,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272
[2020-10-23 18:13:27,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2020-10-23 18:13:27,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50.
[2020-10-23 18:13:27,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states.
[2020-10-23 18:13:27,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 67 transitions.
[2020-10-23 18:13:27,096 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 67 transitions. Word has length 29
[2020-10-23 18:13:27,096 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 18:13:27,099 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 67 transitions.
[2020-10-23 18:13:27,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-10-23 18:13:27,099 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 67 transitions.
[2020-10-23 18:13:27,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2020-10-23 18:13:27,103 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 18:13:27,104 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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, 1, 1, 1, 1, 1]
[2020-10-23 18:13:27,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:13:27,305 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:13:27,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:13:27,307 INFO L82 PathProgramCache]: Analyzing trace with hash 2070859795, now seen corresponding path program 1 times
[2020-10-23 18:13:27,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:13:27,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420661547]
[2020-10-23 18:13:27,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:13:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:27,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 18:13:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:27,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-23 18:13:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:27,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:27,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:27,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-10-23 18:13:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:27,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2020-10-23 18:13:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:27,446 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2020-10-23 18:13:27,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420661547]
[2020-10-23 18:13:27,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213172234]
[2020-10-23 18:13:27,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:13:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:27,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-23 18:13:27,508 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-23 18:13:27,643 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2020-10-23 18:13:27,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-23 18:13:27,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12
[2020-10-23 18:13:27,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012198333]
[2020-10-23 18:13:27,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-10-23 18:13:27,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 18:13:27,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-10-23 18:13:27,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132
[2020-10-23 18:13:27,646 INFO L87 Difference]: Start difference. First operand 50 states and 67 transitions. Second operand 12 states.
[2020-10-23 18:13:28,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 18:13:28,544 INFO L93 Difference]: Finished difference Result 111 states and 173 transitions.
[2020-10-23 18:13:28,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-10-23 18:13:28,545 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41
[2020-10-23 18:13:28,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 18:13:28,548 INFO L225 Difference]: With dead ends: 111
[2020-10-23 18:13:28,548 INFO L226 Difference]: Without dead ends: 68
[2020-10-23 18:13:28,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506
[2020-10-23 18:13:28,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2020-10-23 18:13:28,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68.
[2020-10-23 18:13:28,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states.
[2020-10-23 18:13:28,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 97 transitions.
[2020-10-23 18:13:28,570 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 97 transitions. Word has length 41
[2020-10-23 18:13:28,570 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 18:13:28,570 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 97 transitions.
[2020-10-23 18:13:28,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-10-23 18:13:28,571 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 97 transitions.
[2020-10-23 18:13:28,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2020-10-23 18:13:28,573 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 18:13:28,573 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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, 1, 1, 1, 1, 1, 1]
[2020-10-23 18:13:28,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:13:28,787 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:13:28,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:13:28,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1960607334, now seen corresponding path program 1 times
[2020-10-23 18:13:28,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:13:28,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438208906]
[2020-10-23 18:13:28,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:13:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:28,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 18:13:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:28,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-23 18:13:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:28,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:28,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:28,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-10-23 18:13:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:28,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-10-23 18:13:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2020-10-23 18:13:28,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438208906]
[2020-10-23 18:13:28,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822979763]
[2020-10-23 18:13:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:13:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:29,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-23 18:13:29,035 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-23 18:13:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2020-10-23 18:13:29,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-23 18:13:29,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2020-10-23 18:13:29,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137191631]
[2020-10-23 18:13:29,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-10-23 18:13:29,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 18:13:29,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-10-23 18:13:29,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182
[2020-10-23 18:13:29,194 INFO L87 Difference]: Start difference. First operand 68 states and 97 transitions. Second operand 14 states.
[2020-10-23 18:13:30,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 18:13:30,609 INFO L93 Difference]: Finished difference Result 183 states and 327 transitions.
[2020-10-23 18:13:30,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2020-10-23 18:13:30,610 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42
[2020-10-23 18:13:30,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 18:13:30,616 INFO L225 Difference]: With dead ends: 183
[2020-10-23 18:13:30,616 INFO L226 Difference]: Without dead ends: 122
[2020-10-23 18:13:30,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756
[2020-10-23 18:13:30,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states.
[2020-10-23 18:13:30,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108.
[2020-10-23 18:13:30,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states.
[2020-10-23 18:13:30,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 171 transitions.
[2020-10-23 18:13:30,648 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 171 transitions. Word has length 42
[2020-10-23 18:13:30,648 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 18:13:30,649 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 171 transitions.
[2020-10-23 18:13:30,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-10-23 18:13:30,649 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 171 transitions.
[2020-10-23 18:13:30,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2020-10-23 18:13:30,658 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 18:13:30,659 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 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, 1]
[2020-10-23 18:13:30,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:13:30,874 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:13:30,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:13:30,876 INFO L82 PathProgramCache]: Analyzing trace with hash -751460799, now seen corresponding path program 1 times
[2020-10-23 18:13:30,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:13:30,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674476531]
[2020-10-23 18:13:30,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:13:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:30,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 18:13:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:30,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-23 18:13:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:31,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:31,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:31,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:31,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-10-23 18:13:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:31,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-10-23 18:13:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:31,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2020-10-23 18:13:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2020-10-23 18:13:31,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674476531]
[2020-10-23 18:13:31,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428626272]
[2020-10-23 18:13:31,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:13:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:31,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-23 18:13:31,225 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-23 18:13:31,317 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2020-10-23 18:13:31,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-23 18:13:31,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13
[2020-10-23 18:13:31,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559669717]
[2020-10-23 18:13:31,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-23 18:13:31,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 18:13:31,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-23 18:13:31,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156
[2020-10-23 18:13:31,320 INFO L87 Difference]: Start difference. First operand 108 states and 171 transitions. Second operand 13 states.
[2020-10-23 18:13:32,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 18:13:32,491 INFO L93 Difference]: Finished difference Result 268 states and 514 transitions.
[2020-10-23 18:13:32,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2020-10-23 18:13:32,492 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 56
[2020-10-23 18:13:32,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 18:13:32,496 INFO L225 Difference]: With dead ends: 268
[2020-10-23 18:13:32,496 INFO L226 Difference]: Without dead ends: 167
[2020-10-23 18:13:32,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650
[2020-10-23 18:13:32,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states.
[2020-10-23 18:13:32,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 144.
[2020-10-23 18:13:32,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states.
[2020-10-23 18:13:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 246 transitions.
[2020-10-23 18:13:32,536 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 246 transitions. Word has length 56
[2020-10-23 18:13:32,537 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 18:13:32,537 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 246 transitions.
[2020-10-23 18:13:32,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-23 18:13:32,537 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 246 transitions.
[2020-10-23 18:13:32,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2020-10-23 18:13:32,542 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 18:13:32,542 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1, 1]
[2020-10-23 18:13:32,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2020-10-23 18:13:32,757 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:13:32,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:13:32,759 INFO L82 PathProgramCache]: Analyzing trace with hash -2073039210, now seen corresponding path program 1 times
[2020-10-23 18:13:32,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:13:32,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811252912]
[2020-10-23 18:13:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:13:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:32,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 18:13:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:32,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-23 18:13:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:32,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:32,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:32,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:32,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-10-23 18:13:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:32,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-10-23 18:13:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:32,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-10-23 18:13:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:33,018 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2020-10-23 18:13:33,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811252912]
[2020-10-23 18:13:33,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815372151]
[2020-10-23 18:13:33,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:13:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:33,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core
[2020-10-23 18:13:33,081 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-23 18:13:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2020-10-23 18:13:33,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-23 18:13:33,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 14
[2020-10-23 18:13:33,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456620727]
[2020-10-23 18:13:33,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-10-23 18:13:33,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 18:13:33,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-10-23 18:13:33,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182
[2020-10-23 18:13:33,152 INFO L87 Difference]: Start difference. First operand 144 states and 246 transitions. Second operand 14 states.
[2020-10-23 18:13:34,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 18:13:34,349 INFO L93 Difference]: Finished difference Result 307 states and 586 transitions.
[2020-10-23 18:13:34,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2020-10-23 18:13:34,350 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57
[2020-10-23 18:13:34,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 18:13:34,355 INFO L225 Difference]: With dead ends: 307
[2020-10-23 18:13:34,355 INFO L226 Difference]: Without dead ends: 103
[2020-10-23 18:13:34,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756
[2020-10-23 18:13:34,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2020-10-23 18:13:34,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 85.
[2020-10-23 18:13:34,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states.
[2020-10-23 18:13:34,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 128 transitions.
[2020-10-23 18:13:34,406 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 128 transitions. Word has length 57
[2020-10-23 18:13:34,406 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 18:13:34,407 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 128 transitions.
[2020-10-23 18:13:34,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-10-23 18:13:34,407 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 128 transitions.
[2020-10-23 18:13:34,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2020-10-23 18:13:34,413 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 18:13:34,413 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 18:13:34,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:13:34,628 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:13:34,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:13:34,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1406199094, now seen corresponding path program 1 times
[2020-10-23 18:13:34,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:13:34,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896098615]
[2020-10-23 18:13:34,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:13:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:34,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 18:13:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:34,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-23 18:13:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:34,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:34,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:34,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:34,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:34,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-10-23 18:13:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:34,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-10-23 18:13:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:34,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-10-23 18:13:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:35,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:35,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-10-23 18:13:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked.
[2020-10-23 18:13:35,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896098615]
[2020-10-23 18:13:35,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987936722]
[2020-10-23 18:13:35,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:13:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:35,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 39 conjunts are in the unsatisfiable core
[2020-10-23 18:13:35,177 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-23 18:13:35,486 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked.
[2020-10-23 18:13:35,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-23 18:13:35,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 22
[2020-10-23 18:13:35,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381777312]
[2020-10-23 18:13:35,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states
[2020-10-23 18:13:35,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 18:13:35,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2020-10-23 18:13:35,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462
[2020-10-23 18:13:35,489 INFO L87 Difference]: Start difference. First operand 85 states and 128 transitions. Second operand 22 states.
[2020-10-23 18:13:37,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 18:13:37,019 INFO L93 Difference]: Finished difference Result 133 states and 223 transitions.
[2020-10-23 18:13:37,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2020-10-23 18:13:37,019 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 70
[2020-10-23 18:13:37,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 18:13:37,023 INFO L225 Difference]: With dead ends: 133
[2020-10-23 18:13:37,023 INFO L226 Difference]: Without dead ends: 128
[2020-10-23 18:13:37,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 84 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=127, Invalid=1279, Unknown=0, NotChecked=0, Total=1406
[2020-10-23 18:13:37,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states.
[2020-10-23 18:13:37,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 95.
[2020-10-23 18:13:37,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states.
[2020-10-23 18:13:37,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 153 transitions.
[2020-10-23 18:13:37,057 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 153 transitions. Word has length 70
[2020-10-23 18:13:37,059 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 18:13:37,059 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 153 transitions.
[2020-10-23 18:13:37,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2020-10-23 18:13:37,062 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 153 transitions.
[2020-10-23 18:13:37,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72
[2020-10-23 18:13:37,067 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 18:13:37,067 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 18:13:37,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:13:37,282 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:13:37,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:13:37,284 INFO L82 PathProgramCache]: Analyzing trace with hash 2097538675, now seen corresponding path program 2 times
[2020-10-23 18:13:37,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:13:37,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78320629]
[2020-10-23 18:13:37,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:13:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:37,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 18:13:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:37,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-23 18:13:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:37,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:37,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:37,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:37,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-10-23 18:13:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:37,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2020-10-23 18:13:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:37,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2020-10-23 18:13:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:37,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:37,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-10-23 18:13:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:37,504 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 35 proven. 25 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2020-10-23 18:13:37,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78320629]
[2020-10-23 18:13:37,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327483469]
[2020-10-23 18:13:37,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:13:37,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2020-10-23 18:13:37,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-10-23 18:13:37,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core
[2020-10-23 18:13:37,578 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-23 18:13:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked.
[2020-10-23 18:13:37,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-23 18:13:37,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 17
[2020-10-23 18:13:37,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721676617]
[2020-10-23 18:13:37,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-23 18:13:37,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 18:13:37,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-23 18:13:37,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272
[2020-10-23 18:13:37,700 INFO L87 Difference]: Start difference. First operand 95 states and 153 transitions. Second operand 17 states.
[2020-10-23 18:13:39,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 18:13:39,328 INFO L93 Difference]: Finished difference Result 197 states and 354 transitions.
[2020-10-23 18:13:39,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2020-10-23 18:13:39,329 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 71
[2020-10-23 18:13:39,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 18:13:39,332 INFO L225 Difference]: With dead ends: 197
[2020-10-23 18:13:39,332 INFO L226 Difference]: Without dead ends: 101
[2020-10-23 18:13:39,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=204, Invalid=1128, Unknown=0, NotChecked=0, Total=1332
[2020-10-23 18:13:39,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2020-10-23 18:13:39,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 92.
[2020-10-23 18:13:39,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states.
[2020-10-23 18:13:39,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 124 transitions.
[2020-10-23 18:13:39,356 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 124 transitions. Word has length 71
[2020-10-23 18:13:39,356 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 18:13:39,356 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 124 transitions.
[2020-10-23 18:13:39,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-23 18:13:39,358 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 124 transitions.
[2020-10-23 18:13:39,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72
[2020-10-23 18:13:39,360 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 18:13:39,361 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 18:13:39,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2020-10-23 18:13:39,576 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:13:39,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:13:39,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1529278937, now seen corresponding path program 1 times
[2020-10-23 18:13:39,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:13:39,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243131588]
[2020-10-23 18:13:39,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:13:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:39,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 18:13:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:39,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-23 18:13:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:39,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:39,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:39,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:39,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-10-23 18:13:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:39,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2020-10-23 18:13:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:39,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38
[2020-10-23 18:13:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:39,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 18:13:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:39,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-10-23 18:13:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:39,772 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked.
[2020-10-23 18:13:39,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243131588]
[2020-10-23 18:13:39,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170673879]
[2020-10-23 18:13:39,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:13:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:13:39,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 10 conjunts are in the unsatisfiable core
[2020-10-23 18:13:39,854 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-10-23 18:13:39,977 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 17 proven. 33 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked.
[2020-10-23 18:13:39,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-10-23 18:13:39,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13
[2020-10-23 18:13:39,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746034011]
[2020-10-23 18:13:39,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-23 18:13:39,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 18:13:39,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-23 18:13:39,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156
[2020-10-23 18:13:39,981 INFO L87 Difference]: Start difference. First operand 92 states and 124 transitions. Second operand 13 states.
[2020-10-23 18:13:40,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 18:13:40,815 INFO L93 Difference]: Finished difference Result 164 states and 239 transitions.
[2020-10-23 18:13:40,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-10-23 18:13:40,817 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71
[2020-10-23 18:13:40,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 18:13:40,818 INFO L225 Difference]: With dead ends: 164
[2020-10-23 18:13:40,818 INFO L226 Difference]: Without dead ends: 0
[2020-10-23 18:13:40,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552
[2020-10-23 18:13:40,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-10-23 18:13:40,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-10-23 18:13:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-10-23 18:13:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-10-23 18:13:40,820 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71
[2020-10-23 18:13:40,820 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 18:13:40,820 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-10-23 18:13:40,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-23 18:13:40,820 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-10-23 18:13:40,821 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-10-23 18:13:41,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2020-10-23 18:13:41,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-10-23 18:13:41,848 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 16
[2020-10-23 18:13:42,166 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 23
[2020-10-23 18:13:42,401 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed.
[2020-10-23 18:13:42,401 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true
[2020-10-23 18:13:42,402 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed.
[2020-10-23 18:13:42,402 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed.
[2020-10-23 18:13:42,402 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed.
[2020-10-23 18:13:42,402 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|))
[2020-10-23 18:13:42,402 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-10-23 18:13:42,402 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-10-23 18:13:42,403 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-10-23 18:13:42,403 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-10-23 18:13:42,403 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-10-23 18:13:42,403 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 37 44) the Hoare annotation is: true
[2020-10-23 18:13:42,403 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 37 44) no Hoare annotation was computed.
[2020-10-23 18:13:42,403 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 37 44) no Hoare annotation was computed.
[2020-10-23 18:13:42,403 INFO L270 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: false
[2020-10-23 18:13:42,403 INFO L274 CegarLoopResult]: For program point L40(lines 40 42) no Hoare annotation was computed.
[2020-10-23 18:13:42,404 INFO L274 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed.
[2020-10-23 18:13:42,404 INFO L270 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= 4 main_~x~0) (<= main_~x~0 4))
[2020-10-23 18:13:42,404 INFO L274 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed.
[2020-10-23 18:13:42,404 INFO L274 CegarLoopResult]: For program point L40-2(lines 40 42) no Hoare annotation was computed.
[2020-10-23 18:13:42,404 INFO L277 CegarLoopResult]: At program point fibo2ENTRY(lines 19 27) the Hoare annotation is: true
[2020-10-23 18:13:42,404 INFO L270 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (< 1 fibo2_~n))
[2020-10-23 18:13:42,404 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed.
[2020-10-23 18:13:42,404 INFO L270 CegarLoopResult]: At program point L25-2(line 25) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (or (and (<= |fibo2_#t~ret9| 1) (< 1 fibo2_~n) (<= 1 |fibo2_#t~ret9|) (<= |fibo2_#in~n| 2)) (not (<= |fibo2_#in~n| 3))))
[2020-10-23 18:13:42,405 INFO L274 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed.
[2020-10-23 18:13:42,405 INFO L274 CegarLoopResult]: For program point L25-3(line 25) no Hoare annotation was computed.
[2020-10-23 18:13:42,405 INFO L274 CegarLoopResult]: For program point L20(lines 20 26) no Hoare annotation was computed.
[2020-10-23 18:13:42,405 INFO L274 CegarLoopResult]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed.
[2020-10-23 18:13:42,405 INFO L274 CegarLoopResult]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed.
[2020-10-23 18:13:42,405 INFO L277 CegarLoopResult]: At program point fibo1ENTRY(lines 9 17) the Hoare annotation is: true
[2020-10-23 18:13:42,405 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (and (<= |fibo1_#in~n| fibo1_~n) (not (<= |fibo1_#in~n| 2)) (<= fibo1_~n |fibo1_#in~n|))
[2020-10-23 18:13:42,406 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed.
[2020-10-23 18:13:42,406 INFO L270 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: (and (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 4 fibo1_~n) .cse0 (<= |fibo1_#t~ret7| 2) (<= 2 |fibo1_#t~ret7|)) (and (<= |fibo1_#in~n| 3) (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) .cse0) (and (<= 5 |fibo1_#in~n|) .cse0))) (not (<= |fibo1_#in~n| 2)))
[2020-10-23 18:13:42,406 INFO L274 CegarLoopResult]: For program point L12(lines 12 16) no Hoare annotation was computed.
[2020-10-23 18:13:42,406 INFO L274 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed.
[2020-10-23 18:13:42,406 INFO L274 CegarLoopResult]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed.
[2020-10-23 18:13:42,406 INFO L274 CegarLoopResult]: For program point L10(lines 10 16) no Hoare annotation was computed.
[2020-10-23 18:13:42,406 INFO L274 CegarLoopResult]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed.
[2020-10-23 18:13:42,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:13:42 BoogieIcfgContainer
[2020-10-23 18:13:42,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-23 18:13:42,414 INFO L168 Benchmark]: Toolchain (without parser) took 19953.46 ms. Allocated memory was 163.6 MB in the beginning and 368.1 MB in the end (delta: 204.5 MB). Free memory was 139.5 MB in the beginning and 220.3 MB in the end (delta: -80.8 MB). Peak memory consumption was 213.1 MB. Max. memory is 8.0 GB.
[2020-10-23 18:13:42,414 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 163.6 MB. Free memory is still 136.4 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-10-23 18:13:42,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.67 ms. Allocated memory is still 163.6 MB. Free memory was 138.7 MB in the beginning and 129.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2020-10-23 18:13:42,416 INFO L168 Benchmark]: Boogie Preprocessor took 36.08 ms. Allocated memory is still 163.6 MB. Free memory was 129.4 MB in the beginning and 127.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2020-10-23 18:13:42,416 INFO L168 Benchmark]: RCFGBuilder took 484.17 ms. Allocated memory is still 163.6 MB. Free memory was 127.9 MB in the beginning and 113.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
[2020-10-23 18:13:42,417 INFO L168 Benchmark]: TraceAbstraction took 19162.34 ms. Allocated memory was 163.6 MB in the beginning and 368.1 MB in the end (delta: 204.5 MB). Free memory was 146.8 MB in the beginning and 220.3 MB in the end (delta: -73.4 MB). Peak memory consumption was 219.9 MB. Max. memory is 8.0 GB.
[2020-10-23 18:13:42,420 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.17 ms. Allocated memory is still 163.6 MB. Free memory is still 136.4 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 239.67 ms. Allocated memory is still 163.6 MB. Free memory was 138.7 MB in the beginning and 129.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 36.08 ms. Allocated memory is still 163.6 MB. Free memory was 129.4 MB in the beginning and 127.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 484.17 ms. Allocated memory is still 163.6 MB. Free memory was 127.9 MB in the beginning and 113.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 19162.34 ms. Allocated memory was 163.6 MB in the beginning and 368.1 MB in the end (delta: 204.5 MB). Free memory was 146.8 MB in the beginning and 220.3 MB in the end (delta: -73.4 MB). Peak memory consumption was 219.9 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 4]: 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 6 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 17.6s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 10.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 325 SDtfs, 630 SDslu, 924 SDs, 0 SdLazy, 4136 SolverSat, 603 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 841 GetRequests, 596 SyntacticMatches, 9 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred 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: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 103 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 422 PreInvPairs, 511 NumberOfFragments, 124 HoareAnnotationTreeSize, 422 FomulaSimplifications, 3975 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 13 FomulaSimplificationsInter, 2912 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 961 NumberOfCodeBlocks, 961 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 941 ConstructedInterpolants, 0 QuantifiedInterpolants, 124223 SizeOfPredicates, 31 NumberOfNonLiveVariables, 1596 ConjunctsInSsa, 99 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 549/762 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...