/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/jain_7-2.c


--------------------------------------------------------------------------------


This is Ultimate 0.1.25-3af5e1f
[2020-09-04 12:59:49,110 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2020-09-04 12:59:49,180 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-04 12:59:49,229 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-04 12:59:49,229 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-04 12:59:49,230 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-04 12:59:49,231 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-04 12:59:49,231 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-04 12:59:49,232 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-04 12:59:49,232 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-04 12:59:49,232 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-04 12:59:49,232 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-04 12:59:49,233 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-04 12:59:49,233 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-04 12:59:49,234 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-04 12:59:49,234 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-04 12:59:49,234 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-04 12:59:49,235 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-04 12:59:49,235 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-04 12:59:49,235 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-04 12:59:49,235 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-04 12:59:49,235 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-04 12:59:49,236 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-04 12:59:49,236 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-04 12:59:49,236 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-04 12:59:49,236 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-04 12:59:49,237 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-04 12:59:49,237 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-04 12:59:49,237 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-04 12:59:49,237 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-04 12:59:49,237 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-04 12:59:49,238 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-04 12:59:49,238 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2020-09-04 12:59:49,693 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-04 12:59:49,718 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-04 12:59:49,723 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-04 12:59:49,725 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-04 12:59:49,727 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-04 12:59:49,729 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_7-2.c
[2020-09-04 12:59:49,819 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35c1763d9/5b0b1d3544524a40b6e1d97cdff03eae/FLAGba0193411
[2020-09-04 12:59:50,311 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-04 12:59:50,312 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/jain_7-2.c
[2020-09-04 12:59:50,320 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35c1763d9/5b0b1d3544524a40b6e1d97cdff03eae/FLAGba0193411
[2020-09-04 12:59:50,656 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35c1763d9/5b0b1d3544524a40b6e1d97cdff03eae
[2020-09-04 12:59:50,668 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-04 12:59:50,670 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-04 12:59:50,671 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-04 12:59:50,671 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-04 12:59:50,675 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-04 12:59:50,676 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:59:50" (1/1) ...
[2020-09-04 12:59:50,680 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f41fcdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50, skipping insertion in model container
[2020-09-04 12:59:50,680 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:59:50" (1/1) ...
[2020-09-04 12:59:50,689 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-04 12:59:50,714 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-04 12:59:50,953 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-04 12:59:50,958 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-04 12:59:50,975 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-04 12:59:50,989 INFO  L208         MainTranslator]: Completed translation
[2020-09-04 12:59:50,989 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50 WrapperNode
[2020-09-04 12:59:50,989 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-04 12:59:50,990 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-04 12:59:50,990 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-04 12:59:50,990 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-04 12:59:51,003 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50" (1/1) ...
[2020-09-04 12:59:51,003 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50" (1/1) ...
[2020-09-04 12:59:51,008 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50" (1/1) ...
[2020-09-04 12:59:51,009 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50" (1/1) ...
[2020-09-04 12:59:51,013 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50" (1/1) ...
[2020-09-04 12:59:51,020 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50" (1/1) ...
[2020-09-04 12:59:51,020 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50" (1/1) ...
[2020-09-04 12:59:51,095 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-04 12:59:51,096 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-04 12:59:51,096 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-04 12:59:51,096 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-04 12:59:51,097 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-04 12:59:51,165 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-04 12:59:51,165 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-04 12:59:51,165 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-04 12:59:51,166 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-04 12:59:51,166 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-04 12:59:51,166 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint
[2020-09-04 12:59:51,166 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-04 12:59:51,166 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-04 12:59:51,167 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-04 12:59:51,167 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-04 12:59:51,346 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-04 12:59:51,346 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-04 12:59:51,350 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:59:51 BoogieIcfgContainer
[2020-09-04 12:59:51,350 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-04 12:59:51,352 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-04 12:59:51,352 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-04 12:59:51,355 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-04 12:59:51,356 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 12:59:50" (1/3) ...
[2020-09-04 12:59:51,357 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5527b4fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:59:51, skipping insertion in model container
[2020-09-04 12:59:51,357 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50" (2/3) ...
[2020-09-04 12:59:51,357 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5527b4fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:59:51, skipping insertion in model container
[2020-09-04 12:59:51,358 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:59:51" (3/3) ...
[2020-09-04 12:59:51,360 INFO  L109   eAbstractionObserver]: Analyzing ICFG jain_7-2.c
[2020-09-04 12:59:51,368 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-09-04 12:59:51,378 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-04 12:59:51,396 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-04 12:59:51,422 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-04 12:59:51,423 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-04 12:59:51,423 INFO  L377      AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-09-04 12:59:51,423 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-04 12:59:51,423 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-04 12:59:51,423 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-04 12:59:51,423 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-04 12:59:51,423 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-04 12:59:51,441 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states.
[2020-09-04 12:59:51,447 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-09-04 12:59:51,447 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 12:59:51,448 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 12:59:51,449 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 12:59:51,454 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 12:59:51,455 INFO  L82        PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times
[2020-09-04 12:59:51,467 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-09-04 12:59:51,467 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436548995]
[2020-09-04 12:59:51,467 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 12:59:51,594 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 12:59:51,825 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 12:59:51,826 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 12:59:51,832 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 12:59:51,833 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436548995]
[2020-09-04 12:59:51,834 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 12:59:51,834 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-04 12:59:51,835 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049719768]
[2020-09-04 12:59:51,841 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-04 12:59:51,841 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-09-04 12:59:51,858 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-04 12:59:51,859 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2020-09-04 12:59:51,861 INFO  L87              Difference]: Start difference. First operand 18 states. Second operand 6 states.
[2020-09-04 12:59:54,060 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 12:59:54,060 INFO  L93              Difference]: Finished difference Result 33 states and 45 transitions.
[2020-09-04 12:59:54,061 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-04 12:59:54,062 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 10
[2020-09-04 12:59:54,063 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 12:59:54,072 INFO  L225             Difference]: With dead ends: 33
[2020-09-04 12:59:54,072 INFO  L226             Difference]: Without dead ends: 20
[2020-09-04 12:59:54,076 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-09-04 12:59:54,092 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2020-09-04 12:59:54,122 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19.
[2020-09-04 12:59:54,124 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 19 states.
[2020-09-04 12:59:54,125 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions.
[2020-09-04 12:59:54,126 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10
[2020-09-04 12:59:54,127 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 12:59:54,127 INFO  L479      AbstractCegarLoop]: Abstraction has 19 states and 19 transitions.
[2020-09-04 12:59:54,127 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-04 12:59:54,127 INFO  L276                IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions.
[2020-09-04 12:59:54,128 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-09-04 12:59:54,129 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 12:59:54,129 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 12:59:54,129 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-04 12:59:54,130 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 12:59:54,130 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 12:59:54,130 INFO  L82        PathProgramCache]: Analyzing trace with hash 327764987, now seen corresponding path program 1 times
[2020-09-04 12:59:54,130 INFO  L163   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-09-04 12:59:54,131 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026265392]
[2020-09-04 12:59:54,131 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 12:59:54,167 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 12:59:56,368 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 12:59:56,370 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 12:59:56,372 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-04 12:59:56,386 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 12:59:56,399 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 12:59:56,399 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026265392]
[2020-09-04 12:59:56,400 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906955598]
[2020-09-04 12:59:56,400 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate-2/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