/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/loop-acceleration/simple_4-2.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-1a84f73
[2021-04-30 23:05:42,287 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-04-30 23:05:42,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-04-30 23:05:42,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-04-30 23:05:42,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-04-30 23:05:42,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-04-30 23:05:42,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2021-04-30 23:05:42,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
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[2021-04-30 23:05:42,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-04-30 23:05:42,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-04-30 23:05:42,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-04-30 23:05:42,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
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[2021-04-30 23:05:42,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2021-04-30 23:05:42,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-04-30 23:05:42,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-04-30 23:05:42,334 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
[2021-04-30 23:05:42,359 INFO L113 SettingsManager]: Loading preferences was successful
[2021-04-30 23:05:42,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-04-30 23:05:42,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-04-30 23:05:42,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-04-30 23:05:42,362 INFO L138 SettingsManager]: * Use SBE=true
[2021-04-30 23:05:42,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-04-30 23:05:42,362 INFO L138 SettingsManager]: * sizeof long=4
[2021-04-30 23:05:42,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-04-30 23:05:42,362 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-04-30 23:05:42,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-04-30 23:05:42,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-04-30 23:05:42,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-04-30 23:05:42,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-04-30 23:05:42,363 INFO L138 SettingsManager]: * sizeof long double=12
[2021-04-30 23:05:42,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-04-30 23:05:42,364 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-04-30 23:05:42,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-04-30 23:05:42,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-04-30 23:05:42,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-04-30 23:05:42,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-04-30 23:05:42,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-04-30 23:05:42,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-04-30 23:05:42,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-04-30 23:05:42,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-04-30 23:05:42,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-04-30 23:05:42,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-04-30 23:05:42,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-04-30 23:05:42,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-04-30 23:05:42,365 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-04-30 23:05:42,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-04-30 23:05:42,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-04-30 23:05:42,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-04-30 23:05:42,651 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-04-30 23:05:42,653 INFO L275 PluginConnector]: CDTParser initialized
[2021-04-30 23:05:42,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_4-2.c
[2021-04-30 23:05:42,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77740298f/c4ff33639c864e69838991112a115212/FLAGec3b0a562
[2021-04-30 23:05:43,038 INFO L306 CDTParser]: Found 1 translation units.
[2021-04-30 23:05:43,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_4-2.c
[2021-04-30 23:05:43,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77740298f/c4ff33639c864e69838991112a115212/FLAGec3b0a562
[2021-04-30 23:05:43,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77740298f/c4ff33639c864e69838991112a115212
[2021-04-30 23:05:43,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-04-30 23:05:43,470 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-04-30 23:05:43,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-04-30 23:05:43,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-04-30 23:05:43,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-04-30 23:05:43,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 11:05:43" (1/1) ...
[2021-04-30 23:05:43,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cff4fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:05:43, skipping insertion in model container
[2021-04-30 23:05:43,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 11:05:43" (1/1) ...
[2021-04-30 23:05:43,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-04-30 23:05:43,489 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-04-30 23:05:43,570 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_4-2.c[322,335]
[2021-04-30 23:05:43,576 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-04-30 23:05:43,581 INFO L203 MainTranslator]: Completed pre-run
[2021-04-30 23:05:43,588 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_4-2.c[322,335]
[2021-04-30 23:05:43,590 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-04-30 23:05:43,598 INFO L208 MainTranslator]: Completed translation
[2021-04-30 23:05:43,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:05:43 WrapperNode
[2021-04-30 23:05:43,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-04-30 23:05:43,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-04-30 23:05:43,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-04-30 23:05:43,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-04-30 23:05:43,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:05:43" (1/1) ...
[2021-04-30 23:05:43,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:05:43" (1/1) ...
[2021-04-30 23:05:43,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:05:43" (1/1) ...
[2021-04-30 23:05:43,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:05:43" (1/1) ...
[2021-04-30 23:05:43,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:05:43" (1/1) ...
[2021-04-30 23:05:43,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:05:43" (1/1) ...
[2021-04-30 23:05:43,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:05:43" (1/1) ...
[2021-04-30 23:05:43,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-04-30 23:05:43,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-04-30 23:05:43,658 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-04-30 23:05:43,658 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-04-30 23:05:43,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:05:43" (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
[2021-04-30 23:05:43,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-04-30 23:05:43,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-04-30 23:05:43,723 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-04-30 23:05:43,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-04-30 23:05:43,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-04-30 23:05:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-04-30 23:05:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-04-30 23:05:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-04-30 23:05:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-04-30 23:05:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-04-30 23:05:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-04-30 23:05:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-04-30 23:05:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-04-30 23:05:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-04-30 23:05:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-04-30 23:05:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-04-30 23:05:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-04-30 23:05:43,936 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-04-30 23:05:43,936 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-04-30 23:05:43,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 11:05:43 BoogieIcfgContainer
[2021-04-30 23:05:43,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-04-30 23:05:43,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-04-30 23:05:43,938 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-04-30 23:05:43,940 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-04-30 23:05:43,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 11:05:43" (1/3) ...
[2021-04-30 23:05:43,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46530828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 11:05:43, skipping insertion in model container
[2021-04-30 23:05:43,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:05:43" (2/3) ...
[2021-04-30 23:05:43,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46530828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 11:05:43, skipping insertion in model container
[2021-04-30 23:05:43,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 11:05:43" (3/3) ...
[2021-04-30 23:05:43,942 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_4-2.c
[2021-04-30 23:05:43,945 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-04-30 23:05:43,948 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-04-30 23:05:43,961 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-04-30 23:05:43,976 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-04-30 23:05:43,976 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-04-30 23:05:43,976 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-04-30 23:05:43,976 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-04-30 23:05:43,976 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-04-30 23:05:43,976 INFO L381 AbstractCegarLoop]: Difference is false
[2021-04-30 23:05:43,976 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-04-30 23:05:43,976 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-04-30 23:05:43,986 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-04-30 23:05:43,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-04-30 23:05:43,988 INFO L511 BasicCegarLoop]: Found error trace
[2021-04-30 23:05:43,989 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-04-30 23:05:43,989 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-04-30 23:05:43,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-04-30 23:05:43,992 INFO L82 PathProgramCache]: Analyzing trace with hash -219174432, now seen corresponding path program 1 times
[2021-04-30 23:05:43,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-04-30 23:05:43,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366724285]
[2021-04-30 23:05:43,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-04-30 23:05:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-04-30 23:05:44,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-04-30 23:05:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-04-30 23:05:44,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-04-30 23:05:44,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-04-30 23:05:44,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366724285]
[2021-04-30 23:05:44,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366724285] provided 1 perfect and 0 imperfect interpolant sequences
[2021-04-30 23:05:44,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-04-30 23:05:44,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-04-30 23:05:44,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806701508]
[2021-04-30 23:05:44,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-04-30 23:05:44,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-04-30 23:05:44,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-04-30 23:05:44,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-04-30 23:05:44,183 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-04-30 23:05:44,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-04-30 23:05:44,227 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions.
[2021-04-30 23:05:44,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-04-30 23:05:44,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2021-04-30 23:05:44,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-04-30 23:05:44,238 INFO L225 Difference]: With dead ends: 29
[2021-04-30 23:05:44,239 INFO L226 Difference]: Without dead ends: 12
[2021-04-30 23:05:44,241 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-04-30 23:05:44,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states.
[2021-04-30 23:05:44,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12.
[2021-04-30 23:05:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-04-30 23:05:44,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions.
[2021-04-30 23:05:44,271 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11
[2021-04-30 23:05:44,272 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-04-30 23:05:44,272 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions.
[2021-04-30 23:05:44,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-04-30 23:05:44,272 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions.
[2021-04-30 23:05:44,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-04-30 23:05:44,272 INFO L511 BasicCegarLoop]: Found error trace
[2021-04-30 23:05:44,273 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-04-30 23:05:44,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-04-30 23:05:44,273 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-04-30 23:05:44,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-04-30 23:05:44,274 INFO L82 PathProgramCache]: Analyzing trace with hash -222868516, now seen corresponding path program 1 times
[2021-04-30 23:05:44,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-04-30 23:05:44,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869729227]
[2021-04-30 23:05:44,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-04-30 23:05:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-04-30 23:05:44,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,334 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size
[2021-04-30 23:05:44,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19
[2021-04-30 23:05:44,354 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size
[2021-04-30 23:05:44,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-04-30 23:05:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-04-30 23:05:44,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-04-30 23:05:44,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-04-30 23:05:44,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869729227]
[2021-04-30 23:05:44,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869729227] provided 1 perfect and 0 imperfect interpolant sequences
[2021-04-30 23:05:44,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-04-30 23:05:44,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-04-30 23:05:44,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615370888]
[2021-04-30 23:05:44,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-04-30 23:05:44,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-04-30 23:05:44,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-04-30 23:05:44,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-04-30 23:05:44,407 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-04-30 23:05:44,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-04-30 23:05:44,467 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions.
[2021-04-30 23:05:44,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-04-30 23:05:44,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2021-04-30 23:05:44,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-04-30 23:05:44,468 INFO L225 Difference]: With dead ends: 18
[2021-04-30 23:05:44,469 INFO L226 Difference]: Without dead ends: 13
[2021-04-30 23:05:44,469 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-04-30 23:05:44,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2021-04-30 23:05:44,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13.
[2021-04-30 23:05:44,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-04-30 23:05:44,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions.
[2021-04-30 23:05:44,473 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11
[2021-04-30 23:05:44,473 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-04-30 23:05:44,473 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions.
[2021-04-30 23:05:44,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-04-30 23:05:44,473 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions.
[2021-04-30 23:05:44,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-04-30 23:05:44,473 INFO L511 BasicCegarLoop]: Found error trace
[2021-04-30 23:05:44,473 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-04-30 23:05:44,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-04-30 23:05:44,474 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-04-30 23:05:44,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-04-30 23:05:44,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1717471862, now seen corresponding path program 1 times
[2021-04-30 23:05:44,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-04-30 23:05:44,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140341765]
[2021-04-30 23:05:44,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-04-30 23:05:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-04-30 23:05:44,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-04-30 23:05:44,541 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size
[2021-04-30 23:05:44,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19
[2021-04-30 23:05:44,587 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size
[2021-04-30 23:05:44,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-04-30 23:05:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-04-30 23:05:44,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-04-30 23:05:44,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-04-30 23:05:44,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140341765]
[2021-04-30 23:05:44,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140341765] provided 0 perfect and 1 imperfect interpolant sequences
[2021-04-30 23:05:44,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647652504]
[2021-04-30 23:05:44,635 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
[2021-04-30 23:05:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-04-30 23:05:44,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-04-30 23:05:44,685 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-04-30 23:05:44,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-04-30 23:05:44,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-04-30 23:05:44,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-04-30 23:05:44,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-04-30 23:05:44,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-04-30 23:05:44,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-04-30 23:05:44,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-04-30 23:05:44,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-04-30 23:05:44,751 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size
[2021-04-30 23:05:44,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12
[2021-04-30 23:05:44,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,764 WARN L159 QuantifierPusher]: Ignoring assumption.
[2021-04-30 23:05:44,767 INFO L142 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size
[2021-04-30 23:05:44,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21
[2021-04-30 23:05:44,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22
[2021-04-30 23:05:44,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:44,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-04-30 23:05:44,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647652504] provided 0 perfect and 1 imperfect interpolant sequences
[2021-04-30 23:05:44,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-04-30 23:05:44,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6
[2021-04-30 23:05:44,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959060518]
[2021-04-30 23:05:44,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-04-30 23:05:44,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-04-30 23:05:44,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-04-30 23:05:44,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-04-30 23:05:44,795 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-04-30 23:05:44,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-04-30 23:05:44,904 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions.
[2021-04-30 23:05:44,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-04-30 23:05:44,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12
[2021-04-30 23:05:44,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-04-30 23:05:44,905 INFO L225 Difference]: With dead ends: 19
[2021-04-30 23:05:44,905 INFO L226 Difference]: Without dead ends: 14
[2021-04-30 23:05:44,905 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 148.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56
[2021-04-30 23:05:44,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2021-04-30 23:05:44,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2021-04-30 23:05:44,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-04-30 23:05:44,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions.
[2021-04-30 23:05:44,909 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12
[2021-04-30 23:05:44,909 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-04-30 23:05:44,909 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions.
[2021-04-30 23:05:44,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-04-30 23:05:44,909 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions.
[2021-04-30 23:05:44,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-04-30 23:05:44,910 INFO L511 BasicCegarLoop]: Found error trace
[2021-04-30 23:05:44,910 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-04-30 23:05:45,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2021-04-30 23:05:45,129 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-04-30 23:05:45,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-04-30 23:05:45,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1738481436, now seen corresponding path program 2 times
[2021-04-30 23:05:45,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-04-30 23:05:45,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122002403]
[2021-04-30 23:05:45,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-04-30 23:05:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-04-30 23:05:45,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-04-30 23:05:45,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-04-30 23:05:45,186 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size
[2021-04-30 23:05:45,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19
[2021-04-30 23:05:45,206 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size
[2021-04-30 23:05:45,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-04-30 23:05:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-04-30 23:05:45,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-04-30 23:05:45,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-04-30 23:05:45,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122002403]
[2021-04-30 23:05:45,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122002403] provided 0 perfect and 1 imperfect interpolant sequences
[2021-04-30 23:05:45,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711176488]
[2021-04-30 23:05:45,237 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 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
[2021-04-30 23:05:45,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2021-04-30 23:05:45,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-04-30 23:05:45,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-04-30 23:05:45,285 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-04-30 23:05:45,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6
[2021-04-30 23:05:45,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6
[2021-04-30 23:05:45,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6
[2021-04-30 23:05:45,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6
[2021-04-30 23:05:45,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,353 WARN L159 QuantifierPusher]: Ignoring assumption.
[2021-04-30 23:05:45,356 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size
[2021-04-30 23:05:45,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17
[2021-04-30 23:05:45,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18
[2021-04-30 23:05:45,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,359 WARN L159 QuantifierPusher]: Ignoring assumption.
[2021-04-30 23:05:45,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17
[2021-04-30 23:05:45,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18
[2021-04-30 23:05:45,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,367 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts
[2021-04-30 23:05:45,371 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,371 WARN L159 QuantifierPusher]: Ignoring assumption.
[2021-04-30 23:05:45,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-04-30 23:05:45,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-04-30 23:05:45,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-04-30 23:05:45,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-04-30 23:05:45,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-04-30 23:05:45,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-04-30 23:05:45,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-04-30 23:05:45,406 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size
[2021-04-30 23:05:45,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-04-30 23:05:45,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-04-30 23:05:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-04-30 23:05:45,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711176488] provided 1 perfect and 0 imperfect interpolant sequences
[2021-04-30 23:05:45,409 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2021-04-30 23:05:45,409 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9
[2021-04-30 23:05:45,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860626863]
[2021-04-30 23:05:45,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-04-30 23:05:45,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-04-30 23:05:45,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-04-30 23:05:45,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2021-04-30 23:05:45,411 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-04-30 23:05:45,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-04-30 23:05:45,428 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions.
[2021-04-30 23:05:45,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-04-30 23:05:45,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13
[2021-04-30 23:05:45,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-04-30 23:05:45,429 INFO L225 Difference]: With dead ends: 14
[2021-04-30 23:05:45,429 INFO L226 Difference]: Without dead ends: 0
[2021-04-30 23:05:45,430 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 75.3ms TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2021-04-30 23:05:45,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-04-30 23:05:45,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-04-30 23:05:45,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-04-30 23:05:45,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-04-30 23:05:45,431 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13
[2021-04-30 23:05:45,431 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-04-30 23:05:45,431 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-04-30 23:05:45,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-04-30 23:05:45,431 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-04-30 23:05:45,432 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-04-30 23:05:45,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-04-30 23:05:45,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-04-30 23:05:45,730 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed.
[2021-04-30 23:05:45,730 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed.
[2021-04-30 23:05:45,730 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed.
[2021-04-30 23:05:45,730 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed.
[2021-04-30 23:05:45,731 INFO L194 CegarLoopUtils]: 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|))
[2021-04-30 23:05:45,731 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2021-04-30 23:05:45,731 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2021-04-30 23:05:45,731 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true
[2021-04-30 23:05:45,731 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2021-04-30 23:05:45,731 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2021-04-30 23:05:45,731 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 12 20) the Hoare annotation is: true
[2021-04-30 23:05:45,731 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 12 20) no Hoare annotation was computed.
[2021-04-30 23:05:45,731 INFO L201 CegarLoopUtils]: At program point L15-2(lines 15 17) the Hoare annotation is: true
[2021-04-30 23:05:45,731 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 12 20) no Hoare annotation was computed.
[2021-04-30 23:05:45,731 INFO L194 CegarLoopUtils]: At program point L15-3(lines 15 17) the Hoare annotation is: (<= (mod main_~x~0 4294967296) 0)
[2021-04-30 23:05:45,731 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true
[2021-04-30 23:05:45,731 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed.
[2021-04-30 23:05:45,731 INFO L198 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed.
[2021-04-30 23:05:45,732 INFO L198 CegarLoopUtils]: For program point L6(lines 6 8) no Hoare annotation was computed.
[2021-04-30 23:05:45,732 INFO L198 CegarLoopUtils]: For program point L6-2(lines 5 10) no Hoare annotation was computed.
[2021-04-30 23:05:45,732 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed.
[2021-04-30 23:05:45,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.04 11:05:45 BoogieIcfgContainer
[2021-04-30 23:05:45,738 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-04-30 23:05:45,738 INFO L168 Benchmark]: Toolchain (without parser) took 2268.05 ms. Allocated memory was 184.5 MB in the beginning and 222.3 MB in the end (delta: 37.7 MB). Free memory was 150.3 MB in the beginning and 175.1 MB in the end (delta: -24.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 8.0 GB.
[2021-04-30 23:05:45,739 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 184.5 MB. Free memory is still 167.0 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-04-30 23:05:45,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 126.51 ms. Allocated memory is still 184.5 MB. Free memory was 150.1 MB in the beginning and 141.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2021-04-30 23:05:45,745 INFO L168 Benchmark]: Boogie Preprocessor took 57.49 ms. Allocated memory is still 184.5 MB. Free memory was 140.9 MB in the beginning and 168.3 MB in the end (delta: -27.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 8.0 GB.
[2021-04-30 23:05:45,745 INFO L168 Benchmark]: RCFGBuilder took 278.97 ms. Allocated memory is still 184.5 MB. Free memory was 168.3 MB in the beginning and 156.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB.
[2021-04-30 23:05:45,747 INFO L168 Benchmark]: TraceAbstraction took 1799.73 ms. Allocated memory was 184.5 MB in the beginning and 222.3 MB in the end (delta: 37.7 MB). Free memory was 156.0 MB in the beginning and 175.1 MB in the end (delta: -19.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB.
[2021-04-30 23:05:45,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.11 ms. Allocated memory is still 184.5 MB. Free memory is still 167.0 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 126.51 ms. Allocated memory is still 184.5 MB. Free memory was 150.1 MB in the beginning and 141.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 57.49 ms. Allocated memory is still 184.5 MB. Free memory was 140.9 MB in the beginning and 168.3 MB in the end (delta: -27.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 278.97 ms. Allocated memory is still 184.5 MB. Free memory was 168.3 MB in the beginning and 156.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1799.73 ms. Allocated memory was 184.5 MB in the beginning and 222.3 MB in the end (delta: 37.7 MB). Free memory was 156.0 MB in the beginning and 175.1 MB in the end (delta: -19.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 7]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1674.7ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 6.0ms, AutomataDifference: 262.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 80.5ms, InitialAbstractionConstructionTime: 6.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 45 SDtfs, 22 SDslu, 45 SDs, 0 SdLazy, 35 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 333.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 28.3ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 13 NumberOfFragments, 41 HoareAnnotationTreeSize, 10 FomulaSimplifications, 80 FormulaSimplificationTreeSizeReduction, 30.2ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 129 FormulaSimplificationTreeSizeReductionInter, 40.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 27.7ms SsaConstructionTime, 94.2ms SatisfiabilityAnalysisTime, 684.4ms InterpolantComputationTime, 72 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 248 SizeOfPredicates, 2 NumberOfNonLiveVariables, 173 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 3/8 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
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 15]: Loop Invariant
Derived loop invariant: 1
RESULT: Ultimate proved your program to be correct!
Received shutdown request...