/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/sum01-1.i
--------------------------------------------------------------------------------
This is Ultimate 0.2.0-b8ad66e
[2020-10-24 02:24:33,375 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-10-24 02:24:33,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-24 02:24:33,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-24 02:24:33,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-24 02:24:33,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-24 02:24:33,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-24 02:24:33,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-24 02:24:33,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-24 02:24:33,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-24 02:24:33,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-10-24 02:24:33,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-24 02:24:33,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-24 02:24:33,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-24 02:24:33,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-24 02:24:33,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-24 02:24:33,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-24 02:24:33,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-24 02:24:33,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-24 02:24:33,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-24 02:24:33,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-24 02:24:33,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-24 02:24:33,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-10-24 02:24:33,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-24 02:24:33,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-24 02:24:33,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-24 02:24:33,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-24 02:24:33,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-24 02:24:33,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-24 02:24:33,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-24 02:24:33,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-24 02:24:33,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-24 02:24:33,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-24 02:24:33,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-24 02:24:33,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-24 02:24:33,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-24 02:24:33,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-24 02:24:33,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-24 02:24:33,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-24 02:24:33,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-24 02:24:33,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-10-24 02:24:33,490 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-10-24 02:24:33,510 INFO L113 SettingsManager]: Loading preferences was successful
[2020-10-24 02:24:33,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-24 02:24:33,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-24 02:24:33,515 INFO L138 SettingsManager]: * sizeof long=4
[2020-10-24 02:24:33,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-10-24 02:24:33,516 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-10-24 02:24:33,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-10-24 02:24:33,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-10-24 02:24:33,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-24 02:24:33,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-10-24 02:24:33,518 INFO L138 SettingsManager]: * sizeof long double=12
[2020-10-24 02:24:33,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-10-24 02:24:33,518 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-10-24 02:24:33,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-10-24 02:24:33,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-24 02:24:33,519 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2020-10-24 02:24:33,519 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-10-24 02:24:33,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-10-24 02:24:33,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-24 02:24:33,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-24 02:24:33,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-10-24 02:24:33,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-24 02:24:33,521 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true
[2020-10-24 02:24:33,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-24 02:24:33,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-24 02:24:33,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-24 02:24:33,987 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-10-24 02:24:33,988 INFO L275 PluginConnector]: CDTParser initialized
[2020-10-24 02:24:33,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-1.i
[2020-10-24 02:24:34,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2b7d1fe2/bf9f08a39fe942fc930d805f3c1aef9e/FLAG015b923cc
[2020-10-24 02:24:34,807 INFO L306 CDTParser]: Found 1 translation units.
[2020-10-24 02:24:34,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-1.i
[2020-10-24 02:24:34,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2b7d1fe2/bf9f08a39fe942fc930d805f3c1aef9e/FLAG015b923cc
[2020-10-24 02:24:35,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2b7d1fe2/bf9f08a39fe942fc930d805f3c1aef9e
[2020-10-24 02:24:35,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-24 02:24:35,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-24 02:24:35,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-24 02:24:35,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-24 02:24:35,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-24 02:24:35,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:24:35" (1/1) ...
[2020-10-24 02:24:35,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0d7468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:35, skipping insertion in model container
[2020-10-24 02:24:35,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:24:35" (1/1) ...
[2020-10-24 02:24:35,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-10-24 02:24:35,208 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-10-24 02:24:35,431 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-24 02:24:35,442 INFO L203 MainTranslator]: Completed pre-run
[2020-10-24 02:24:35,459 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-24 02:24:35,476 INFO L208 MainTranslator]: Completed translation
[2020-10-24 02:24:35,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:35 WrapperNode
[2020-10-24 02:24:35,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-24 02:24:35,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-24 02:24:35,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-24 02:24:35,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-10-24 02:24:35,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:35" (1/1) ...
[2020-10-24 02:24:35,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:35" (1/1) ...
[2020-10-24 02:24:35,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:35" (1/1) ...
[2020-10-24 02:24:35,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:35" (1/1) ...
[2020-10-24 02:24:35,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:35" (1/1) ...
[2020-10-24 02:24:35,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:35" (1/1) ...
[2020-10-24 02:24:35,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:35" (1/1) ...
[2020-10-24 02:24:35,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-24 02:24:35,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-24 02:24:35,516 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-10-24 02:24:35,516 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-10-24 02:24:35,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:35" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-24 02:24:35,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-24 02:24:35,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-24 02:24:35,600 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-24 02:24:35,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-10-24 02:24:35,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-10-24 02:24:35,600 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-10-24 02:24:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-24 02:24:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2020-10-24 02:24:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure __assert
[2020-10-24 02:24:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-24 02:24:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-24 02:24:35,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-10-24 02:24:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint
[2020-10-24 02:24:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-10-24 02:24:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-24 02:24:35,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-24 02:24:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-24 02:24:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-10-24 02:24:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-10-24 02:24:35,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-24 02:24:35,840 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-24 02:24:35,840 INFO L298 CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-24 02:24:35,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:24:35 BoogieIcfgContainer
[2020-10-24 02:24:35,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-24 02:24:35,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-24 02:24:35,845 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-10-24 02:24:35,852 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-10-24 02:24:35,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:24:35" (1/3) ...
[2020-10-24 02:24:35,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c70192d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:24:35, skipping insertion in model container
[2020-10-24 02:24:35,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:35" (2/3) ...
[2020-10-24 02:24:35,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c70192d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:24:35, skipping insertion in model container
[2020-10-24 02:24:35,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:24:35" (3/3) ...
[2020-10-24 02:24:35,856 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01-1.i
[2020-10-24 02:24:35,899 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-24 02:24:35,911 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-24 02:24:35,946 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-24 02:24:36,023 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-10-24 02:24:36,024 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-10-24 02:24:36,024 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-24 02:24:36,024 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-24 02:24:36,024 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-24 02:24:36,025 INFO L382 AbstractCegarLoop]: Difference is false
[2020-10-24 02:24:36,025 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-24 02:24:36,025 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-24 02:24:36,065 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states.
[2020-10-24 02:24:36,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-24 02:24:36,080 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 02:24:36,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 02:24:36,081 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 02:24:36,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 02:24:36,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1475454684, now seen corresponding path program 1 times
[2020-10-24 02:24:36,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-24 02:24:36,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156169978]
[2020-10-24 02:24:36,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 02:24:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:36,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-24 02:24:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 02:24:36,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156169978]
[2020-10-24 02:24:36,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-24 02:24:36,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-24 02:24:36,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124614897]
[2020-10-24 02:24:36,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-10-24 02:24:36,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-24 02:24:36,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-10-24 02:24:36,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-10-24 02:24:36,464 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states.
[2020-10-24 02:24:36,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 02:24:36,557 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions.
[2020-10-24 02:24:36,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-10-24 02:24:36,559 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23
[2020-10-24 02:24:36,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 02:24:36,567 INFO L225 Difference]: With dead ends: 52
[2020-10-24 02:24:36,568 INFO L226 Difference]: Without dead ends: 29
[2020-10-24 02:24:36,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-10-24 02:24:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2020-10-24 02:24:36,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2020-10-24 02:24:36,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2020-10-24 02:24:36,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions.
[2020-10-24 02:24:36,624 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 23
[2020-10-24 02:24:36,624 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 02:24:36,624 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions.
[2020-10-24 02:24:36,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-10-24 02:24:36,625 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions.
[2020-10-24 02:24:36,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-10-24 02:24:36,626 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 02:24:36,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 02:24:36,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-24 02:24:36,627 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 02:24:36,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 02:24:36,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1935305038, now seen corresponding path program 1 times
[2020-10-24 02:24:36,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-24 02:24:36,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665911434]
[2020-10-24 02:24:36,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 02:24:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:36,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-24 02:24:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:36,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 02:24:36,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665911434]
[2020-10-24 02:24:36,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-24 02:24:36,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-24 02:24:36,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606287645]
[2020-10-24 02:24:36,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-24 02:24:36,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-24 02:24:36,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-24 02:24:36,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-10-24 02:24:36,861 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 6 states.
[2020-10-24 02:24:37,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 02:24:37,084 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions.
[2020-10-24 02:24:37,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-10-24 02:24:37,085 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23
[2020-10-24 02:24:37,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 02:24:37,087 INFO L225 Difference]: With dead ends: 42
[2020-10-24 02:24:37,087 INFO L226 Difference]: Without dead ends: 35
[2020-10-24 02:24:37,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2020-10-24 02:24:37,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2020-10-24 02:24:37,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34.
[2020-10-24 02:24:37,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2020-10-24 02:24:37,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions.
[2020-10-24 02:24:37,103 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 23
[2020-10-24 02:24:37,104 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 02:24:37,104 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions.
[2020-10-24 02:24:37,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-24 02:24:37,104 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions.
[2020-10-24 02:24:37,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2020-10-24 02:24:37,105 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 02:24:37,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 02:24:37,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-24 02:24:37,106 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 02:24:37,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 02:24:37,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1625328538, now seen corresponding path program 1 times
[2020-10-24 02:24:37,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-24 02:24:37,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237055802]
[2020-10-24 02:24:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 02:24:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:37,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-24 02:24:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 02:24:37,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237055802]
[2020-10-24 02:24:37,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-24 02:24:37,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12
[2020-10-24 02:24:37,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642120352]
[2020-10-24 02:24:37,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-10-24 02:24:37,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-24 02:24:37,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-10-24 02:24:37,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132
[2020-10-24 02:24:37,438 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 12 states.
[2020-10-24 02:24:38,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 02:24:38,053 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions.
[2020-10-24 02:24:38,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2020-10-24 02:24:38,054 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29
[2020-10-24 02:24:38,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 02:24:38,056 INFO L225 Difference]: With dead ends: 61
[2020-10-24 02:24:38,056 INFO L226 Difference]: Without dead ends: 40
[2020-10-24 02:24:38,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462
[2020-10-24 02:24:38,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2020-10-24 02:24:38,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36.
[2020-10-24 02:24:38,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states.
[2020-10-24 02:24:38,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions.
[2020-10-24 02:24:38,070 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 29
[2020-10-24 02:24:38,071 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 02:24:38,071 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions.
[2020-10-24 02:24:38,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-10-24 02:24:38,071 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions.
[2020-10-24 02:24:38,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2020-10-24 02:24:38,073 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 02:24:38,073 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 02:24:38,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-24 02:24:38,074 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 02:24:38,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 02:24:38,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1487589007, now seen corresponding path program 1 times
[2020-10-24 02:24:38,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-24 02:24:38,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065890760]
[2020-10-24 02:24:38,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 02:24:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:38,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-24 02:24:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 02:24:38,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065890760]
[2020-10-24 02:24:38,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-24 02:24:38,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-24 02:24:38,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801536156]
[2020-10-24 02:24:38,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-24 02:24:38,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-24 02:24:38,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-24 02:24:38,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2020-10-24 02:24:38,179 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 6 states.
[2020-10-24 02:24:38,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 02:24:38,361 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions.
[2020-10-24 02:24:38,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2020-10-24 02:24:38,362 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34
[2020-10-24 02:24:38,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 02:24:38,363 INFO L225 Difference]: With dead ends: 53
[2020-10-24 02:24:38,363 INFO L226 Difference]: Without dead ends: 40
[2020-10-24 02:24:38,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90
[2020-10-24 02:24:38,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2020-10-24 02:24:38,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37.
[2020-10-24 02:24:38,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states.
[2020-10-24 02:24:38,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions.
[2020-10-24 02:24:38,375 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 34
[2020-10-24 02:24:38,375 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 02:24:38,376 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions.
[2020-10-24 02:24:38,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-24 02:24:38,376 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions.
[2020-10-24 02:24:38,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2020-10-24 02:24:38,377 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 02:24:38,377 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 02:24:38,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-24 02:24:38,378 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 02:24:38,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 02:24:38,379 INFO L82 PathProgramCache]: Analyzing trace with hash -45757058, now seen corresponding path program 2 times
[2020-10-24 02:24:38,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-24 02:24:38,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289917227]
[2020-10-24 02:24:38,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 02:24:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:38,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-24 02:24:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:38,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 02:24:38,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289917227]
[2020-10-24 02:24:38,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-24 02:24:38,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15
[2020-10-24 02:24:38,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036591371]
[2020-10-24 02:24:38,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-10-24 02:24:38,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-24 02:24:38,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-10-24 02:24:38,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210
[2020-10-24 02:24:38,743 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 15 states.
[2020-10-24 02:24:39,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 02:24:39,688 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions.
[2020-10-24 02:24:39,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2020-10-24 02:24:39,689 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 35
[2020-10-24 02:24:39,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 02:24:39,690 INFO L225 Difference]: With dead ends: 53
[2020-10-24 02:24:39,690 INFO L226 Difference]: Without dead ends: 46
[2020-10-24 02:24:39,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870
[2020-10-24 02:24:39,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2020-10-24 02:24:39,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42.
[2020-10-24 02:24:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states.
[2020-10-24 02:24:39,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions.
[2020-10-24 02:24:39,704 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 35
[2020-10-24 02:24:39,705 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 02:24:39,705 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions.
[2020-10-24 02:24:39,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-10-24 02:24:39,705 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions.
[2020-10-24 02:24:39,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2020-10-24 02:24:39,706 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 02:24:39,707 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 02:24:39,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-24 02:24:39,707 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 02:24:39,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 02:24:39,708 INFO L82 PathProgramCache]: Analyzing trace with hash 959629145, now seen corresponding path program 2 times
[2020-10-24 02:24:39,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-24 02:24:39,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415588586]
[2020-10-24 02:24:39,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 02:24:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:39,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-24 02:24:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 02:24:39,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415588586]
[2020-10-24 02:24:39,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-24 02:24:39,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-10-24 02:24:39,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742642542]
[2020-10-24 02:24:39,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-24 02:24:39,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-24 02:24:39,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-24 02:24:39,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-24 02:24:39,798 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 8 states.
[2020-10-24 02:24:40,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 02:24:40,127 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions.
[2020-10-24 02:24:40,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2020-10-24 02:24:40,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40
[2020-10-24 02:24:40,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 02:24:40,130 INFO L225 Difference]: With dead ends: 59
[2020-10-24 02:24:40,131 INFO L226 Difference]: Without dead ends: 46
[2020-10-24 02:24:40,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210
[2020-10-24 02:24:40,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2020-10-24 02:24:40,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43.
[2020-10-24 02:24:40,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states.
[2020-10-24 02:24:40,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions.
[2020-10-24 02:24:40,156 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 40
[2020-10-24 02:24:40,156 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 02:24:40,157 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions.
[2020-10-24 02:24:40,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-24 02:24:40,157 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions.
[2020-10-24 02:24:40,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2020-10-24 02:24:40,164 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 02:24:40,164 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 02:24:40,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-10-24 02:24:40,167 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 02:24:40,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 02:24:40,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1491405674, now seen corresponding path program 3 times
[2020-10-24 02:24:40,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-24 02:24:40,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133297553]
[2020-10-24 02:24:40,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 02:24:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:40,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-24 02:24:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:40,557 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2020-10-24 02:24:40,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133297553]
[2020-10-24 02:24:40,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-24 02:24:40,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17
[2020-10-24 02:24:40,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692224394]
[2020-10-24 02:24:40,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-24 02:24:40,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-24 02:24:40,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-24 02:24:40,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272
[2020-10-24 02:24:40,560 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 17 states.
[2020-10-24 02:24:41,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 02:24:41,647 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions.
[2020-10-24 02:24:41,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2020-10-24 02:24:41,648 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41
[2020-10-24 02:24:41,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 02:24:41,649 INFO L225 Difference]: With dead ends: 58
[2020-10-24 02:24:41,649 INFO L226 Difference]: Without dead ends: 51
[2020-10-24 02:24:41,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930
[2020-10-24 02:24:41,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2020-10-24 02:24:41,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49.
[2020-10-24 02:24:41,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states.
[2020-10-24 02:24:41,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions.
[2020-10-24 02:24:41,665 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 41
[2020-10-24 02:24:41,665 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 02:24:41,665 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions.
[2020-10-24 02:24:41,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-24 02:24:41,665 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions.
[2020-10-24 02:24:41,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-10-24 02:24:41,666 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 02:24:41,666 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 02:24:41,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-10-24 02:24:41,667 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 02:24:41,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 02:24:41,667 INFO L82 PathProgramCache]: Analyzing trace with hash 577916737, now seen corresponding path program 3 times
[2020-10-24 02:24:41,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-24 02:24:41,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270669085]
[2020-10-24 02:24:41,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 02:24:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:41,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-24 02:24:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:41,765 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 02:24:41,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270669085]
[2020-10-24 02:24:41,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-24 02:24:41,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-10-24 02:24:41,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418406148]
[2020-10-24 02:24:41,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-10-24 02:24:41,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-24 02:24:41,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-10-24 02:24:41,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90
[2020-10-24 02:24:41,768 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 10 states.
[2020-10-24 02:24:42,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 02:24:42,164 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions.
[2020-10-24 02:24:42,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2020-10-24 02:24:42,164 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46
[2020-10-24 02:24:42,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 02:24:42,165 INFO L225 Difference]: With dead ends: 71
[2020-10-24 02:24:42,165 INFO L226 Difference]: Without dead ends: 58
[2020-10-24 02:24:42,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380
[2020-10-24 02:24:42,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2020-10-24 02:24:42,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55.
[2020-10-24 02:24:42,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states.
[2020-10-24 02:24:42,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions.
[2020-10-24 02:24:42,198 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 46
[2020-10-24 02:24:42,198 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 02:24:42,199 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions.
[2020-10-24 02:24:42,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-10-24 02:24:42,199 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions.
[2020-10-24 02:24:42,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-10-24 02:24:42,200 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 02:24:42,200 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 02:24:42,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2020-10-24 02:24:42,201 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 02:24:42,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 02:24:42,202 INFO L82 PathProgramCache]: Analyzing trace with hash 978733353, now seen corresponding path program 4 times
[2020-10-24 02:24:42,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-24 02:24:42,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080680369]
[2020-10-24 02:24:42,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 02:24:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:42,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-24 02:24:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:42,395 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 17 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 02:24:42,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080680369]
[2020-10-24 02:24:42,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-24 02:24:42,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12
[2020-10-24 02:24:42,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786035434]
[2020-10-24 02:24:42,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-10-24 02:24:42,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-24 02:24:42,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-10-24 02:24:42,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2020-10-24 02:24:42,405 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 12 states.
[2020-10-24 02:24:42,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 02:24:42,927 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions.
[2020-10-24 02:24:42,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2020-10-24 02:24:42,929 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52
[2020-10-24 02:24:42,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 02:24:42,930 INFO L225 Difference]: With dead ends: 77
[2020-10-24 02:24:42,930 INFO L226 Difference]: Without dead ends: 64
[2020-10-24 02:24:42,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=403, Unknown=0, NotChecked=0, Total=600
[2020-10-24 02:24:42,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2020-10-24 02:24:42,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61.
[2020-10-24 02:24:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states.
[2020-10-24 02:24:42,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions.
[2020-10-24 02:24:42,963 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 52
[2020-10-24 02:24:42,966 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 02:24:42,966 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions.
[2020-10-24 02:24:42,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-10-24 02:24:42,967 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions.
[2020-10-24 02:24:42,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2020-10-24 02:24:42,970 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 02:24:42,972 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 02:24:42,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2020-10-24 02:24:42,972 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 02:24:42,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 02:24:42,973 INFO L82 PathProgramCache]: Analyzing trace with hash 2084648209, now seen corresponding path program 5 times
[2020-10-24 02:24:42,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-24 02:24:42,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115747525]
[2020-10-24 02:24:42,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 02:24:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:43,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-24 02:24:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 21 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 02:24:43,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115747525]
[2020-10-24 02:24:43,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-24 02:24:43,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2020-10-24 02:24:43,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441365142]
[2020-10-24 02:24:43,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-10-24 02:24:43,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-24 02:24:43,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-10-24 02:24:43,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182
[2020-10-24 02:24:43,173 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 14 states.
[2020-10-24 02:24:43,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 02:24:43,784 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions.
[2020-10-24 02:24:43,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2020-10-24 02:24:43,785 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58
[2020-10-24 02:24:43,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 02:24:43,786 INFO L225 Difference]: With dead ends: 83
[2020-10-24 02:24:43,786 INFO L226 Difference]: Without dead ends: 70
[2020-10-24 02:24:43,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=279, Invalid=591, Unknown=0, NotChecked=0, Total=870
[2020-10-24 02:24:43,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states.
[2020-10-24 02:24:43,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67.
[2020-10-24 02:24:43,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states.
[2020-10-24 02:24:43,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions.
[2020-10-24 02:24:43,808 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 58
[2020-10-24 02:24:43,810 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 02:24:43,810 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions.
[2020-10-24 02:24:43,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-10-24 02:24:43,810 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions.
[2020-10-24 02:24:43,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2020-10-24 02:24:43,813 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 02:24:43,813 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 02:24:43,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2020-10-24 02:24:43,813 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 02:24:43,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 02:24:43,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1874170617, now seen corresponding path program 6 times
[2020-10-24 02:24:43,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-24 02:24:43,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030530313]
[2020-10-24 02:24:43,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 02:24:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:44,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-24 02:24:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 25 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 02:24:44,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030530313]
[2020-10-24 02:24:44,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-24 02:24:44,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16
[2020-10-24 02:24:44,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458358730]
[2020-10-24 02:24:44,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-10-24 02:24:44,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-24 02:24:44,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-10-24 02:24:44,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-10-24 02:24:44,034 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 16 states.
[2020-10-24 02:24:44,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 02:24:44,791 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions.
[2020-10-24 02:24:44,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2020-10-24 02:24:44,792 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 64
[2020-10-24 02:24:44,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 02:24:44,793 INFO L225 Difference]: With dead ends: 89
[2020-10-24 02:24:44,793 INFO L226 Difference]: Without dead ends: 76
[2020-10-24 02:24:44,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=375, Invalid=815, Unknown=0, NotChecked=0, Total=1190
[2020-10-24 02:24:44,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states.
[2020-10-24 02:24:44,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73.
[2020-10-24 02:24:44,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states.
[2020-10-24 02:24:44,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions.
[2020-10-24 02:24:44,825 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 64
[2020-10-24 02:24:44,826 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 02:24:44,826 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions.
[2020-10-24 02:24:44,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-10-24 02:24:44,826 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions.
[2020-10-24 02:24:44,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2020-10-24 02:24:44,833 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 02:24:44,834 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 02:24:44,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2020-10-24 02:24:44,834 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 02:24:44,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 02:24:44,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1873419551, now seen corresponding path program 7 times
[2020-10-24 02:24:44,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-24 02:24:44,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872170283]
[2020-10-24 02:24:44,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 02:24:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:45,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-24 02:24:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:45,065 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 29 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 02:24:45,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872170283]
[2020-10-24 02:24:45,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-24 02:24:45,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18
[2020-10-24 02:24:45,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327384728]
[2020-10-24 02:24:45,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states
[2020-10-24 02:24:45,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-24 02:24:45,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2020-10-24 02:24:45,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306
[2020-10-24 02:24:45,067 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 18 states.
[2020-10-24 02:24:46,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 02:24:46,057 INFO L93 Difference]: Finished difference Result 95 states and 99 transitions.
[2020-10-24 02:24:46,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2020-10-24 02:24:46,058 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 70
[2020-10-24 02:24:46,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 02:24:46,059 INFO L225 Difference]: With dead ends: 95
[2020-10-24 02:24:46,059 INFO L226 Difference]: Without dead ends: 82
[2020-10-24 02:24:46,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=485, Invalid=1075, Unknown=0, NotChecked=0, Total=1560
[2020-10-24 02:24:46,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2020-10-24 02:24:46,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79.
[2020-10-24 02:24:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states.
[2020-10-24 02:24:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions.
[2020-10-24 02:24:46,095 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 70
[2020-10-24 02:24:46,096 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 02:24:46,096 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions.
[2020-10-24 02:24:46,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2020-10-24 02:24:46,096 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions.
[2020-10-24 02:24:46,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2020-10-24 02:24:46,097 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 02:24:46,097 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 02:24:46,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2020-10-24 02:24:46,098 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 02:24:46,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 02:24:46,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1243306807, now seen corresponding path program 8 times
[2020-10-24 02:24:46,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-24 02:24:46,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796029418]
[2020-10-24 02:24:46,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 02:24:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:46,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-24 02:24:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-24 02:24:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 33 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-24 02:24:46,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796029418]
[2020-10-24 02:24:46,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-24 02:24:46,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20
[2020-10-24 02:24:46,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643964895]
[2020-10-24 02:24:46,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states
[2020-10-24 02:24:46,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-24 02:24:46,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2020-10-24 02:24:46,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380
[2020-10-24 02:24:46,351 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 20 states.
[2020-10-24 02:24:47,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-24 02:24:47,445 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions.
[2020-10-24 02:24:47,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2020-10-24 02:24:47,446 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 76
[2020-10-24 02:24:47,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-24 02:24:47,447 INFO L225 Difference]: With dead ends: 100
[2020-10-24 02:24:47,447 INFO L226 Difference]: Without dead ends: 87
[2020-10-24 02:24:47,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=609, Invalid=1371, Unknown=0, NotChecked=0, Total=1980
[2020-10-24 02:24:47,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2020-10-24 02:24:47,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85.
[2020-10-24 02:24:47,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states.
[2020-10-24 02:24:47,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions.
[2020-10-24 02:24:47,468 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 76
[2020-10-24 02:24:47,469 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-24 02:24:47,469 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions.
[2020-10-24 02:24:47,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2020-10-24 02:24:47,469 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions.
[2020-10-24 02:24:47,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2020-10-24 02:24:47,470 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-24 02:24:47,470 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-24 02:24:47,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2020-10-24 02:24:47,470 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-24 02:24:47,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-24 02:24:47,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2084853937, now seen corresponding path program 9 times
[2020-10-24 02:24:47,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-24 02:24:47,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688887542]
[2020-10-24 02:24:47,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-24 02:24:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-24 02:24:47,494 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-24 02:24:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-24 02:24:47,516 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-24 02:24:47,549 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-10-24 02:24:47,549 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2020-10-24 02:24:47,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2020-10-24 02:24:47,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:24:47 BoogieIcfgContainer
[2020-10-24 02:24:47,605 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-24 02:24:47,608 INFO L168 Benchmark]: Toolchain (without parser) took 12451.09 ms. Allocated memory was 155.2 MB in the beginning and 269.5 MB in the end (delta: 114.3 MB). Free memory was 131.5 MB in the beginning and 159.7 MB in the end (delta: -28.1 MB). Peak memory consumption was 87.6 MB. Max. memory is 8.0 GB.
[2020-10-24 02:24:47,608 INFO L168 Benchmark]: CDTParser took 3.15 ms. Allocated memory is still 155.2 MB. Free memory was 128.7 MB in the beginning and 128.6 MB in the end (delta: 77.4 kB). There was no memory consumed. Max. memory is 8.0 GB.
[2020-10-24 02:24:47,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.77 ms. Allocated memory is still 155.2 MB. Free memory was 130.8 MB in the beginning and 121.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2020-10-24 02:24:47,610 INFO L168 Benchmark]: Boogie Preprocessor took 36.85 ms. Allocated memory is still 155.2 MB. Free memory was 121.6 MB in the beginning and 120.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2020-10-24 02:24:47,610 INFO L168 Benchmark]: RCFGBuilder took 327.28 ms. Allocated memory is still 155.2 MB. Free memory was 120.1 MB in the beginning and 106.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
[2020-10-24 02:24:47,611 INFO L168 Benchmark]: TraceAbstraction took 11760.63 ms. Allocated memory was 155.2 MB in the beginning and 269.5 MB in the end (delta: 114.3 MB). Free memory was 106.1 MB in the beginning and 159.7 MB in the end (delta: -53.6 MB). Peak memory consumption was 61.4 MB. Max. memory is 8.0 GB.
[2020-10-24 02:24:47,614 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 3.15 ms. Allocated memory is still 155.2 MB. Free memory was 128.7 MB in the beginning and 128.6 MB in the end (delta: 77.4 kB). There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 310.77 ms. Allocated memory is still 155.2 MB. Free memory was 130.8 MB in the beginning and 121.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 36.85 ms. Allocated memory is still 155.2 MB. Free memory was 121.6 MB in the beginning and 120.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 327.28 ms. Allocated memory is still 155.2 MB. Free memory was 120.1 MB in the beginning and 106.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 11760.63 ms. Allocated memory was 155.2 MB in the beginning and 269.5 MB in the end (delta: 114.3 MB). Free memory was 106.1 MB in the beginning and 159.7 MB in the end (delta: -53.6 MB). Peak memory consumption was 61.4 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L23] int i, n=__VERIFIER_nondet_uint(), sn=0;
VAL [__VERIFIER_nondet_uint()=10, n=10]
[L23] int i, n=__VERIFIER_nondet_uint(), sn=0;
VAL [n=0, n=10]
[L24] i=1
VAL [i=1, n=10, n=0]
[L24] COND TRUE i<=n
VAL [i=1, n=0, n=10]
[L25] COND TRUE i<10
VAL [i=1, n=0, n=10]
[L26] sn = sn + (2)
VAL [i=1, n=10, n=2]
[L24] i++
VAL [i=2, n=10, n=2]
[L24] COND TRUE i<=n
VAL [i=2, n=2, n=10]
[L25] COND TRUE i<10
VAL [i=2, n=10, n=2]
[L26] sn = sn + (2)
VAL [i=2, n=4, n=10]
[L24] i++
VAL [i=3, n=4, n=10]
[L24] COND TRUE i<=n
VAL [i=3, n=4, n=10]
[L25] COND TRUE i<10
VAL [i=3, n=4, n=10]
[L26] sn = sn + (2)
VAL [i=3, n=6, n=10]
[L24] i++
VAL [i=4, n=10, n=6]
[L24] COND TRUE i<=n
VAL [i=4, n=6, n=10]
[L25] COND TRUE i<10
VAL [i=4, n=10, n=6]
[L26] sn = sn + (2)
VAL [i=4, n=8, n=10]
[L24] i++
VAL [i=5, n=8, n=10]
[L24] COND TRUE i<=n
VAL [i=5, n=8, n=10]
[L25] COND TRUE i<10
VAL [i=5, n=10, n=8]
[L26] sn = sn + (2)
VAL [i=5, n=10, n=10]
[L24] i++
VAL [i=6, n=10, n=10]
[L24] COND TRUE i<=n
VAL [i=6, n=10, n=10]
[L25] COND TRUE i<10
VAL [i=6, n=10, n=10]
[L26] sn = sn + (2)
VAL [i=6, n=10, n=12]
[L24] i++
VAL [i=7, n=10, n=12]
[L24] COND TRUE i<=n
VAL [i=7, n=12, n=10]
[L25] COND TRUE i<10
VAL [i=7, n=10, n=12]
[L26] sn = sn + (2)
VAL [i=7, n=14, n=10]
[L24] i++
VAL [i=8, n=10, n=14]
[L24] COND TRUE i<=n
VAL [i=8, n=14, n=10]
[L25] COND TRUE i<10
VAL [i=8, n=14, n=10]
[L26] sn = sn + (2)
VAL [i=8, n=16, n=10]
[L24] i++
VAL [i=9, n=16, n=10]
[L24] COND TRUE i<=n
VAL [i=9, n=10, n=16]
[L25] COND TRUE i<10
VAL [i=9, n=10, n=16]
[L26] sn = sn + (2)
VAL [i=9, n=10, n=18]
[L24] i++
VAL [i=10, n=10, n=18]
[L24] COND TRUE i<=n
VAL [i=10, n=10, n=18]
[L25] COND FALSE !(i<10)
VAL [i=10, n=10, n=18]
[L24] i++
VAL [i=11, n=10, n=18]
[L24] COND FALSE !(i<=n)
VAL [i=11, n=18, n=10]
[L28] CALL __VERIFIER_assert(sn==n*(2) || sn == 0)
VAL [\old(cond)=0]
[L15] COND TRUE !(cond)
VAL [\old(cond)=0, cond=0]
[L16] CALL reach_error()
[L12] COND FALSE !(0)
[L12] __assert_fail ("0", "sum01-1.c", 3, __extension__ __PRETTY_FUNCTION__)
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.5s, OverallIterations: 14, TraceHistogramMax: 10, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 338 SDtfs, 686 SDslu, 1245 SDs, 0 SdLazy, 1802 SolverSat, 171 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 329 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1674 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 34 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 673 NumberOfCodeBlocks, 673 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 578 ConstructedInterpolants, 0 QuantifiedInterpolants, 92044 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 154/758 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...