/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:43:39,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:43:39,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:43:39,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:43:39,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:43:39,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:43:39,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:43:39,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:43:39,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:43:39,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:43:39,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:43:39,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:43:39,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:43:39,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:43:39,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:43:39,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:43:39,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:43:39,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:43:39,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:43:39,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:43:39,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:43:40,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:43:40,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:43:40,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:43:40,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 11:43:40,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 11:43:40,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 11:43:40,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 11:43:40,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 11:43:40,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-21 11:43:40,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:43:40,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:43:40,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:43:40,021 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 11:43:40,053 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:43:40,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:43:40,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:43:40,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:43:40,056 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:43:40,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:43:40,056 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:43:40,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:43:40,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:43:40,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:43:40,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:43:40,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:43:40,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:43:40,059 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:43:40,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:43:40,060 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:43:40,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:43:40,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:43:40,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:43:40,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:43:40,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:43:40,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:43:40,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:43:40,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:43:40,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:43:40,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:43:40,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:40,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:43:40,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:43:40,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 11:43:40,340 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:43:40,354 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:43:40,358 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:43:40,359 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:43:40,360 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:43:40,360 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-07-21 11:43:40,429 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/500786e77/9d56a30b3095469e830ffd9cbfa7290e/FLAGb86cdc4a0 [2020-07-21 11:43:40,913 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:43:40,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+lhb-reducer.c [2020-07-21 11:43:40,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/500786e77/9d56a30b3095469e830ffd9cbfa7290e/FLAGb86cdc4a0 [2020-07-21 11:43:41,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/500786e77/9d56a30b3095469e830ffd9cbfa7290e [2020-07-21 11:43:41,262 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:43:41,265 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:43:41,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:43:41,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:43:41,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:43:41,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:43:41" (1/1) ... [2020-07-21 11:43:41,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf31bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:41, skipping insertion in model container [2020-07-21 11:43:41,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:43:41" (1/1) ... [2020-07-21 11:43:41,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:43:41,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:43:41,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:43:41,669 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:43:41,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:43:41,719 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:43:41,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:41 WrapperNode [2020-07-21 11:43:41,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:43:41,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:43:41,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:43:41,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:43:41,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:41" (1/1) ... [2020-07-21 11:43:41,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:41" (1/1) ... [2020-07-21 11:43:41,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:41" (1/1) ... [2020-07-21 11:43:41,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:41" (1/1) ... [2020-07-21 11:43:41,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:41" (1/1) ... [2020-07-21 11:43:41,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:41" (1/1) ... [2020-07-21 11:43:41,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:41" (1/1) ... [2020-07-21 11:43:41,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:43:41,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:43:41,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:43:41,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:43:41,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:41" (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 [2020-07-21 11:43:41,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:43:41,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:43:41,911 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 11:43:41,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:43:41,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:43:41,912 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 11:43:41,912 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 11:43:41,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 11:43:41,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:43:41,913 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:43:41,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:43:41,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:43:42,358 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:43:42,358 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 11:43:42,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:43:42 BoogieIcfgContainer [2020-07-21 11:43:42,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:43:42,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:43:42,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:43:42,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:43:42,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:43:41" (1/3) ... [2020-07-21 11:43:42,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4792ec30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:43:42, skipping insertion in model container [2020-07-21 11:43:42,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:43:41" (2/3) ... [2020-07-21 11:43:42,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4792ec30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:43:42, skipping insertion in model container [2020-07-21 11:43:42,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:43:42" (3/3) ... [2020-07-21 11:43:42,375 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+lhb-reducer.c [2020-07-21 11:43:42,386 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:43:42,396 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2020-07-21 11:43:42,411 INFO L251 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-07-21 11:43:42,435 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:43:42,435 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:43:42,436 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:43:42,436 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:43:42,436 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:43:42,436 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:43:42,436 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:43:42,436 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:43:42,458 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-07-21 11:43:42,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 11:43:42,465 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:42,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:42,467 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:42,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:42,473 INFO L82 PathProgramCache]: Analyzing trace with hash -452302183, now seen corresponding path program 1 times [2020-07-21 11:43:42,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:42,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885866066] [2020-07-21 11:43:42,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:42,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 11:43:42,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:42,668 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:42,675 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:42,677 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:42,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:42,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885866066] [2020-07-21 11:43:42,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:42,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:43:42,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340287555] [2020-07-21 11:43:42,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:43:42,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:42,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:43:42,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:43:42,725 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 4 states. [2020-07-21 11:43:42,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:42,855 INFO L93 Difference]: Finished difference Result 127 states and 170 transitions. [2020-07-21 11:43:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:43:42,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-21 11:43:42,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:42,868 INFO L225 Difference]: With dead ends: 127 [2020-07-21 11:43:42,868 INFO L226 Difference]: Without dead ends: 111 [2020-07-21 11:43:42,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:43:42,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-07-21 11:43:42,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 73. [2020-07-21 11:43:42,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-07-21 11:43:42,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-07-21 11:43:42,913 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 12 [2020-07-21 11:43:42,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:42,914 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-07-21 11:43:42,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:43:42,914 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-07-21 11:43:42,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 11:43:42,915 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:42,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:43,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:43,132 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:43,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:43,133 INFO L82 PathProgramCache]: Analyzing trace with hash -449131431, now seen corresponding path program 1 times [2020-07-21 11:43:43,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:43,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308335945] [2020-07-21 11:43:43,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:43,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 11:43:43,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:43,209 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:43,212 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:43,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:43,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308335945] [2020-07-21 11:43:43,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:43,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:43:43,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5852625] [2020-07-21 11:43:43,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:43:43,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:43,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:43:43,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:43:43,234 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 4 states. [2020-07-21 11:43:43,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:43,367 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2020-07-21 11:43:43,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:43:43,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-21 11:43:43,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:43,370 INFO L225 Difference]: With dead ends: 111 [2020-07-21 11:43:43,371 INFO L226 Difference]: Without dead ends: 109 [2020-07-21 11:43:43,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:43:43,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-21 11:43:43,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 71. [2020-07-21 11:43:43,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-07-21 11:43:43,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-07-21 11:43:43,385 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 12 [2020-07-21 11:43:43,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:43,399 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-07-21 11:43:43,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:43:43,400 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-07-21 11:43:43,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 11:43:43,400 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:43,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:43,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:43,614 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:43,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:43,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1218997650, now seen corresponding path program 1 times [2020-07-21 11:43:43,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:43,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113926218] [2020-07-21 11:43:43,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:43,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:43:43,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:43,698 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:43,703 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:43,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:43,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:43,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113926218] [2020-07-21 11:43:43,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:43,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:43:43,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875980747] [2020-07-21 11:43:43,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:43:43,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:43,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:43:43,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:43:43,721 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 5 states. [2020-07-21 11:43:43,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:43,820 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-07-21 11:43:43,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:43:43,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-21 11:43:43,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:43,822 INFO L225 Difference]: With dead ends: 73 [2020-07-21 11:43:43,822 INFO L226 Difference]: Without dead ends: 71 [2020-07-21 11:43:43,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:43:43,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-07-21 11:43:43,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2020-07-21 11:43:43,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-21 11:43:43,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-07-21 11:43:43,831 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 15 [2020-07-21 11:43:43,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:43,832 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-07-21 11:43:43,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:43:43,832 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-07-21 11:43:43,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 11:43:43,833 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:43,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:44,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:44,047 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:44,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:44,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1248304044, now seen corresponding path program 1 times [2020-07-21 11:43:44,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:44,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728067943] [2020-07-21 11:43:44,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:44,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:43:44,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:44,100 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:44,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:44,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:44,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728067943] [2020-07-21 11:43:44,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:44,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:43:44,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837766995] [2020-07-21 11:43:44,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:43:44,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:44,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:43:44,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:43:44,115 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 5 states. [2020-07-21 11:43:44,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:44,198 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-07-21 11:43:44,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:43:44,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-21 11:43:44,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:44,200 INFO L225 Difference]: With dead ends: 71 [2020-07-21 11:43:44,200 INFO L226 Difference]: Without dead ends: 69 [2020-07-21 11:43:44,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:43:44,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-21 11:43:44,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-07-21 11:43:44,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-21 11:43:44,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-07-21 11:43:44,208 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 15 [2020-07-21 11:43:44,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:44,208 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-07-21 11:43:44,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:43:44,208 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-07-21 11:43:44,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 11:43:44,209 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:44,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:44,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:44,423 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:44,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:44,424 INFO L82 PathProgramCache]: Analyzing trace with hash 865781601, now seen corresponding path program 1 times [2020-07-21 11:43:44,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:44,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189353376] [2020-07-21 11:43:44,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:44,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:43:44,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:44,477 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:44,480 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:44,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:44,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:44,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189353376] [2020-07-21 11:43:44,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:44,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:43:44,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616090161] [2020-07-21 11:43:44,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:43:44,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:44,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:43:44,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:43:44,494 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 4 states. [2020-07-21 11:43:44,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:44,551 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-07-21 11:43:44,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:43:44,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-07-21 11:43:44,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:44,553 INFO L225 Difference]: With dead ends: 69 [2020-07-21 11:43:44,553 INFO L226 Difference]: Without dead ends: 65 [2020-07-21 11:43:44,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:43:44,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-07-21 11:43:44,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2020-07-21 11:43:44,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-21 11:43:44,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-07-21 11:43:44,560 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 16 [2020-07-21 11:43:44,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:44,560 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-07-21 11:43:44,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:43:44,560 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-07-21 11:43:44,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 11:43:44,561 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:44,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:44,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:44,775 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:44,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:44,776 INFO L82 PathProgramCache]: Analyzing trace with hash -42274612, now seen corresponding path program 1 times [2020-07-21 11:43:44,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:44,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296953141] [2020-07-21 11:43:44,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:44,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:43:44,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:44,834 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:44,835 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:44,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:44,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:44,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296953141] [2020-07-21 11:43:44,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:44,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:43:44,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155066903] [2020-07-21 11:43:44,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:43:44,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:44,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:43:44,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:43:44,847 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 5 states. [2020-07-21 11:43:44,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:44,965 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2020-07-21 11:43:44,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:43:44,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-21 11:43:44,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:44,967 INFO L225 Difference]: With dead ends: 108 [2020-07-21 11:43:44,967 INFO L226 Difference]: Without dead ends: 106 [2020-07-21 11:43:44,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:43:44,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-21 11:43:44,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 61. [2020-07-21 11:43:44,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-21 11:43:44,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-07-21 11:43:44,975 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 16 [2020-07-21 11:43:44,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:44,975 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-07-21 11:43:44,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:43:44,975 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-07-21 11:43:44,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 11:43:44,976 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:44,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:45,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:45,186 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:45,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:45,187 INFO L82 PathProgramCache]: Analyzing trace with hash -42288514, now seen corresponding path program 1 times [2020-07-21 11:43:45,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:45,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771603665] [2020-07-21 11:43:45,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:45,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:43:45,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:45,244 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:45,246 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:45,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:45,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771603665] [2020-07-21 11:43:45,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:45,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:43:45,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998335717] [2020-07-21 11:43:45,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:43:45,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:45,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:43:45,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:43:45,256 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 5 states. [2020-07-21 11:43:45,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:45,367 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2020-07-21 11:43:45,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:43:45,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-21 11:43:45,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:45,368 INFO L225 Difference]: With dead ends: 93 [2020-07-21 11:43:45,368 INFO L226 Difference]: Without dead ends: 91 [2020-07-21 11:43:45,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:43:45,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-21 11:43:45,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 59. [2020-07-21 11:43:45,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-21 11:43:45,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-07-21 11:43:45,380 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 16 [2020-07-21 11:43:45,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:45,381 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-07-21 11:43:45,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:43:45,381 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-07-21 11:43:45,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 11:43:45,383 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:45,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:45,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:45,600 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:45,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:45,600 INFO L82 PathProgramCache]: Analyzing trace with hash -42716511, now seen corresponding path program 1 times [2020-07-21 11:43:45,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:45,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268989038] [2020-07-21 11:43:45,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:45,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:43:45,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:45,644 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:45,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:45,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268989038] [2020-07-21 11:43:45,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:45,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:43:45,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847190878] [2020-07-21 11:43:45,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:43:45,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:45,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:43:45,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:43:45,652 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 4 states. [2020-07-21 11:43:45,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:45,694 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-07-21 11:43:45,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:43:45,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-07-21 11:43:45,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:45,696 INFO L225 Difference]: With dead ends: 61 [2020-07-21 11:43:45,696 INFO L226 Difference]: Without dead ends: 57 [2020-07-21 11:43:45,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:43:45,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-21 11:43:45,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-07-21 11:43:45,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-21 11:43:45,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-07-21 11:43:45,701 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 16 [2020-07-21 11:43:45,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:45,701 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-07-21 11:43:45,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:43:45,702 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-07-21 11:43:45,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 11:43:45,702 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:45,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:45,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:45,914 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:45,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:45,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1083648192, now seen corresponding path program 1 times [2020-07-21 11:43:45,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:45,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331625176] [2020-07-21 11:43:45,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:45,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:43:45,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:45,964 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:45,966 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:45,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:45,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:45,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331625176] [2020-07-21 11:43:45,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:45,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:43:45,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995200489] [2020-07-21 11:43:45,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:43:45,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:45,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:43:45,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:43:45,974 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 5 states. [2020-07-21 11:43:46,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:46,046 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2020-07-21 11:43:46,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:43:46,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-21 11:43:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:46,047 INFO L225 Difference]: With dead ends: 74 [2020-07-21 11:43:46,047 INFO L226 Difference]: Without dead ends: 72 [2020-07-21 11:43:46,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:43:46,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-21 11:43:46,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 53. [2020-07-21 11:43:46,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-21 11:43:46,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-07-21 11:43:46,052 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 17 [2020-07-21 11:43:46,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:46,053 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-07-21 11:43:46,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:43:46,053 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-07-21 11:43:46,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 11:43:46,054 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:46,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:46,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:46,264 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:46,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:46,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1085187392, now seen corresponding path program 1 times [2020-07-21 11:43:46,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:46,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490440686] [2020-07-21 11:43:46,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:46,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:43:46,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:46,318 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:46,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:46,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:46,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490440686] [2020-07-21 11:43:46,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:46,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:43:46,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279998971] [2020-07-21 11:43:46,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:43:46,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:46,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:43:46,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:43:46,332 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 5 states. [2020-07-21 11:43:46,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:46,399 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2020-07-21 11:43:46,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:43:46,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-21 11:43:46,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:46,400 INFO L225 Difference]: With dead ends: 55 [2020-07-21 11:43:46,400 INFO L226 Difference]: Without dead ends: 53 [2020-07-21 11:43:46,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:43:46,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-21 11:43:46,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-07-21 11:43:46,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-21 11:43:46,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-07-21 11:43:46,411 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 17 [2020-07-21 11:43:46,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:46,412 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-07-21 11:43:46,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:43:46,412 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-07-21 11:43:46,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 11:43:46,413 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:46,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:46,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:46,625 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:46,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:46,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1310509752, now seen corresponding path program 1 times [2020-07-21 11:43:46,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:46,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070101047] [2020-07-21 11:43:46,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:46,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 11:43:46,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:46,731 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:46,733 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:46,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:46,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:46,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070101047] [2020-07-21 11:43:46,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:46,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:43:46,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296684473] [2020-07-21 11:43:46,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:43:46,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:46,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:43:46,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:43:46,746 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 6 states. [2020-07-21 11:43:46,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:46,887 INFO L93 Difference]: Finished difference Result 118 states and 128 transitions. [2020-07-21 11:43:46,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:43:46,887 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-21 11:43:46,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:46,891 INFO L225 Difference]: With dead ends: 118 [2020-07-21 11:43:46,891 INFO L226 Difference]: Without dead ends: 116 [2020-07-21 11:43:46,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:43:46,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-07-21 11:43:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 56. [2020-07-21 11:43:46,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-21 11:43:46,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-07-21 11:43:46,903 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 17 [2020-07-21 11:43:46,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:46,903 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-07-21 11:43:46,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:43:46,903 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-07-21 11:43:46,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 11:43:46,904 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:46,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:47,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:47,113 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:47,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:47,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1310940728, now seen corresponding path program 1 times [2020-07-21 11:43:47,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:47,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424205651] [2020-07-21 11:43:47,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:47,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 11:43:47,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:47,213 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:47,218 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:47,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:47,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424205651] [2020-07-21 11:43:47,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:47,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:43:47,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598933690] [2020-07-21 11:43:47,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:43:47,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:47,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:43:47,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:43:47,227 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 6 states. [2020-07-21 11:43:47,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:47,352 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2020-07-21 11:43:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:43:47,353 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-21 11:43:47,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:47,354 INFO L225 Difference]: With dead ends: 108 [2020-07-21 11:43:47,355 INFO L226 Difference]: Without dead ends: 106 [2020-07-21 11:43:47,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:43:47,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-21 11:43:47,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 58. [2020-07-21 11:43:47,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-07-21 11:43:47,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-07-21 11:43:47,362 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 17 [2020-07-21 11:43:47,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:47,362 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-07-21 11:43:47,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:43:47,362 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-07-21 11:43:47,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 11:43:47,363 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:47,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:47,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:47,576 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:47,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:47,576 INFO L82 PathProgramCache]: Analyzing trace with hash -765275888, now seen corresponding path program 1 times [2020-07-21 11:43:47,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:47,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277547061] [2020-07-21 11:43:47,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:47,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:43:47,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:47,621 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:47,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:47,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:47,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277547061] [2020-07-21 11:43:47,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:47,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:43:47,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115098713] [2020-07-21 11:43:47,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:43:47,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:47,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:43:47,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:43:47,634 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 5 states. [2020-07-21 11:43:47,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:47,725 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2020-07-21 11:43:47,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:43:47,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-21 11:43:47,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:47,727 INFO L225 Difference]: With dead ends: 79 [2020-07-21 11:43:47,727 INFO L226 Difference]: Without dead ends: 77 [2020-07-21 11:43:47,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:43:47,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-07-21 11:43:47,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 56. [2020-07-21 11:43:47,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-21 11:43:47,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-07-21 11:43:47,741 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 18 [2020-07-21 11:43:47,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:47,741 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-07-21 11:43:47,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:43:47,741 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-07-21 11:43:47,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 11:43:47,742 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:47,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:47,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:47,943 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:47,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:47,943 INFO L82 PathProgramCache]: Analyzing trace with hash -766641308, now seen corresponding path program 1 times [2020-07-21 11:43:47,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:47,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034845948] [2020-07-21 11:43:47,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:47,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 11:43:47,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:48,027 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:48,029 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:48,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:48,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034845948] [2020-07-21 11:43:48,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:48,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:43:48,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357020800] [2020-07-21 11:43:48,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:43:48,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:48,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:43:48,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:43:48,053 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 6 states. [2020-07-21 11:43:48,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:48,177 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2020-07-21 11:43:48,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:43:48,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-21 11:43:48,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:48,179 INFO L225 Difference]: With dead ends: 97 [2020-07-21 11:43:48,179 INFO L226 Difference]: Without dead ends: 95 [2020-07-21 11:43:48,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:43:48,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-07-21 11:43:48,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 62. [2020-07-21 11:43:48,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-21 11:43:48,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2020-07-21 11:43:48,186 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 18 [2020-07-21 11:43:48,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:48,189 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2020-07-21 11:43:48,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:43:48,189 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2020-07-21 11:43:48,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 11:43:48,189 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:48,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:48,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:48,391 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:48,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:48,391 INFO L82 PathProgramCache]: Analyzing trace with hash -718926058, now seen corresponding path program 1 times [2020-07-21 11:43:48,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:48,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919437193] [2020-07-21 11:43:48,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:48,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 11:43:48,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:48,459 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:48,461 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:48,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:48,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:48,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919437193] [2020-07-21 11:43:48,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:48,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:43:48,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232351501] [2020-07-21 11:43:48,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:43:48,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:48,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:43:48,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:43:48,471 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 6 states. [2020-07-21 11:43:48,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:48,573 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-07-21 11:43:48,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:43:48,573 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-21 11:43:48,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:48,574 INFO L225 Difference]: With dead ends: 74 [2020-07-21 11:43:48,574 INFO L226 Difference]: Without dead ends: 70 [2020-07-21 11:43:48,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:43:48,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-21 11:43:48,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2020-07-21 11:43:48,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-21 11:43:48,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2020-07-21 11:43:48,580 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 18 [2020-07-21 11:43:48,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:48,580 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2020-07-21 11:43:48,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:43:48,580 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2020-07-21 11:43:48,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 11:43:48,581 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:48,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:48,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:48,794 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:48,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:48,794 INFO L82 PathProgramCache]: Analyzing trace with hash 2046254387, now seen corresponding path program 1 times [2020-07-21 11:43:48,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:48,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167242496] [2020-07-21 11:43:48,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:48,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 11:43:48,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:48,876 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:48,878 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:48,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:48,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167242496] [2020-07-21 11:43:48,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:48,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:43:48,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161122918] [2020-07-21 11:43:48,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:43:48,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:48,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:43:48,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:43:48,890 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 6 states. [2020-07-21 11:43:49,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:49,011 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-07-21 11:43:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:43:49,011 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-07-21 11:43:49,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:49,012 INFO L225 Difference]: With dead ends: 91 [2020-07-21 11:43:49,012 INFO L226 Difference]: Without dead ends: 89 [2020-07-21 11:43:49,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:43:49,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-21 11:43:49,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 66. [2020-07-21 11:43:49,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-07-21 11:43:49,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-07-21 11:43:49,018 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 19 [2020-07-21 11:43:49,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:49,019 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-07-21 11:43:49,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:43:49,019 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-07-21 11:43:49,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 11:43:49,019 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:49,020 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] [2020-07-21 11:43:49,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:49,232 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:49,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:49,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1992174599, now seen corresponding path program 1 times [2020-07-21 11:43:49,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:49,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538891608] [2020-07-21 11:43:49,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:49,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 11:43:49,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:49,281 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:49,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:49,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538891608] [2020-07-21 11:43:49,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:49,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:43:49,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246162537] [2020-07-21 11:43:49,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:43:49,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:49,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:43:49,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:43:49,290 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 6 states. [2020-07-21 11:43:49,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:49,375 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2020-07-21 11:43:49,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:43:49,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-07-21 11:43:49,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:49,376 INFO L225 Difference]: With dead ends: 68 [2020-07-21 11:43:49,377 INFO L226 Difference]: Without dead ends: 66 [2020-07-21 11:43:49,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:43:49,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-21 11:43:49,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-07-21 11:43:49,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-21 11:43:49,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2020-07-21 11:43:49,383 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 20 [2020-07-21 11:43:49,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:49,384 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2020-07-21 11:43:49,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:43:49,384 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2020-07-21 11:43:49,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 11:43:49,384 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:49,385 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] [2020-07-21 11:43:49,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:49,593 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:49,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:49,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1627873548, now seen corresponding path program 1 times [2020-07-21 11:43:49,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:49,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539469412] [2020-07-21 11:43:49,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:49,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:43:49,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:49,637 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:49,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:49,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:49,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539469412] [2020-07-21 11:43:49,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:49,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:43:49,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924546772] [2020-07-21 11:43:49,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:43:49,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:49,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:43:49,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:43:49,648 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand 4 states. [2020-07-21 11:43:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:49,702 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2020-07-21 11:43:49,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:43:49,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-07-21 11:43:49,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:49,703 INFO L225 Difference]: With dead ends: 64 [2020-07-21 11:43:49,703 INFO L226 Difference]: Without dead ends: 60 [2020-07-21 11:43:49,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:43:49,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-21 11:43:49,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-07-21 11:43:49,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-21 11:43:49,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-07-21 11:43:49,708 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 21 [2020-07-21 11:43:49,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:49,708 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-07-21 11:43:49,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:43:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-07-21 11:43:49,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 11:43:49,709 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:49,709 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] [2020-07-21 11:43:49,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:49,910 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:49,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:49,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1062287301, now seen corresponding path program 1 times [2020-07-21 11:43:49,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:49,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961531818] [2020-07-21 11:43:49,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:49,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 11:43:49,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:50,022 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:50,027 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:50,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:50,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:50,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961531818] [2020-07-21 11:43:50,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:50,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 11:43:50,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237230828] [2020-07-21 11:43:50,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 11:43:50,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:50,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 11:43:50,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 11:43:50,046 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 8 states. [2020-07-21 11:43:50,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:50,213 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2020-07-21 11:43:50,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 11:43:50,213 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-07-21 11:43:50,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:50,214 INFO L225 Difference]: With dead ends: 121 [2020-07-21 11:43:50,214 INFO L226 Difference]: Without dead ends: 119 [2020-07-21 11:43:50,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 11:43:50,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-07-21 11:43:50,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 69. [2020-07-21 11:43:50,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-21 11:43:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2020-07-21 11:43:50,222 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 22 [2020-07-21 11:43:50,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:50,222 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2020-07-21 11:43:50,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 11:43:50,223 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2020-07-21 11:43:50,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 11:43:50,223 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:50,223 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:50,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:50,425 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:50,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:50,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1277783017, now seen corresponding path program 1 times [2020-07-21 11:43:50,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:50,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100533641] [2020-07-21 11:43:50,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:50,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 11:43:50,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:50,540 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:50,542 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:50,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:43:50,565 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:43:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 11:43:50,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100533641] [2020-07-21 11:43:50,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:43:50,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2020-07-21 11:43:50,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432807721] [2020-07-21 11:43:50,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 11:43:50,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:50,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 11:43:50,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-07-21 11:43:50,609 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 10 states. [2020-07-21 11:43:50,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:50,884 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2020-07-21 11:43:50,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-21 11:43:50,885 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-07-21 11:43:50,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:50,889 INFO L225 Difference]: With dead ends: 106 [2020-07-21 11:43:50,889 INFO L226 Difference]: Without dead ends: 104 [2020-07-21 11:43:50,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-07-21 11:43:50,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-07-21 11:43:50,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 65. [2020-07-21 11:43:50,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-21 11:43:50,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2020-07-21 11:43:50,897 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 22 [2020-07-21 11:43:50,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:50,898 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2020-07-21 11:43:50,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 11:43:50,899 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2020-07-21 11:43:50,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 11:43:50,899 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:50,899 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:51,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:51,113 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:51,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:51,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1277352041, now seen corresponding path program 1 times [2020-07-21 11:43:51,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:51,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588974200] [2020-07-21 11:43:51,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:51,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 11:43:51,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:51,215 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:51,217 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:51,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:43:51,232 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:43:51,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 11:43:51,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588974200] [2020-07-21 11:43:51,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:43:51,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2020-07-21 11:43:51,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882091903] [2020-07-21 11:43:51,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 11:43:51,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:51,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 11:43:51,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-07-21 11:43:51,274 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 10 states. [2020-07-21 11:43:51,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:51,562 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2020-07-21 11:43:51,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-21 11:43:51,562 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-07-21 11:43:51,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:51,563 INFO L225 Difference]: With dead ends: 117 [2020-07-21 11:43:51,564 INFO L226 Difference]: Without dead ends: 115 [2020-07-21 11:43:51,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-07-21 11:43:51,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-21 11:43:51,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 63. [2020-07-21 11:43:51,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-21 11:43:51,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2020-07-21 11:43:51,570 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 22 [2020-07-21 11:43:51,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:51,571 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2020-07-21 11:43:51,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 11:43:51,571 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2020-07-21 11:43:51,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 11:43:51,572 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:51,572 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] [2020-07-21 11:43:51,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:51,785 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:51,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:51,786 INFO L82 PathProgramCache]: Analyzing trace with hash 392830346, now seen corresponding path program 1 times [2020-07-21 11:43:51,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:51,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707085724] [2020-07-21 11:43:51,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:51,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 11:43:51,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:51,894 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:51,895 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:51,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:51,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707085724] [2020-07-21 11:43:51,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:51,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 11:43:51,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114219759] [2020-07-21 11:43:51,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 11:43:51,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:51,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 11:43:51,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 11:43:51,908 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 8 states. [2020-07-21 11:43:52,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:52,082 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-07-21 11:43:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 11:43:52,082 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-07-21 11:43:52,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:52,083 INFO L225 Difference]: With dead ends: 100 [2020-07-21 11:43:52,084 INFO L226 Difference]: Without dead ends: 98 [2020-07-21 11:43:52,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 11:43:52,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-07-21 11:43:52,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 65. [2020-07-21 11:43:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-21 11:43:52,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2020-07-21 11:43:52,090 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 23 [2020-07-21 11:43:52,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:52,090 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2020-07-21 11:43:52,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 11:43:52,091 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2020-07-21 11:43:52,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 11:43:52,091 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:52,091 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] [2020-07-21 11:43:52,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:52,304 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:52,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:52,304 INFO L82 PathProgramCache]: Analyzing trace with hash 440545596, now seen corresponding path program 1 times [2020-07-21 11:43:52,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:52,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851578730] [2020-07-21 11:43:52,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:52,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 11:43:52,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:52,415 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:52,417 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:52,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:52,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851578730] [2020-07-21 11:43:52,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:52,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 11:43:52,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486291199] [2020-07-21 11:43:52,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 11:43:52,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:52,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 11:43:52,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 11:43:52,428 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 8 states. [2020-07-21 11:43:52,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:52,541 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-07-21 11:43:52,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 11:43:52,541 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-07-21 11:43:52,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:52,542 INFO L225 Difference]: With dead ends: 80 [2020-07-21 11:43:52,542 INFO L226 Difference]: Without dead ends: 76 [2020-07-21 11:43:52,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-07-21 11:43:52,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-21 11:43:52,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2020-07-21 11:43:52,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-21 11:43:52,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2020-07-21 11:43:52,548 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 23 [2020-07-21 11:43:52,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:52,548 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2020-07-21 11:43:52,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 11:43:52,548 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2020-07-21 11:43:52,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 11:43:52,549 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:52,549 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] [2020-07-21 11:43:52,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:52,760 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:52,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:52,760 INFO L82 PathProgramCache]: Analyzing trace with hash 2075825047, now seen corresponding path program 1 times [2020-07-21 11:43:52,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:52,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211585765] [2020-07-21 11:43:52,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:52,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 11:43:52,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:52,894 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:52,896 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:52,911 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:52,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:43:52,922 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:43:52,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 11:43:52,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211585765] [2020-07-21 11:43:52,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:43:52,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 12 [2020-07-21 11:43:52,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692742832] [2020-07-21 11:43:52,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 11:43:52,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:52,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 11:43:52,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-21 11:43:52,978 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 12 states. [2020-07-21 11:43:53,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:53,296 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2020-07-21 11:43:53,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-21 11:43:53,297 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-07-21 11:43:53,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:53,298 INFO L225 Difference]: With dead ends: 131 [2020-07-21 11:43:53,298 INFO L226 Difference]: Without dead ends: 129 [2020-07-21 11:43:53,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2020-07-21 11:43:53,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-07-21 11:43:53,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 61. [2020-07-21 11:43:53,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-21 11:43:53,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2020-07-21 11:43:53,305 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 27 [2020-07-21 11:43:53,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:53,305 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2020-07-21 11:43:53,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 11:43:53,305 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2020-07-21 11:43:53,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 11:43:53,306 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:53,306 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:53,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:53,507 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:53,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:53,508 INFO L82 PathProgramCache]: Analyzing trace with hash 2123540297, now seen corresponding path program 1 times [2020-07-21 11:43:53,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:53,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555027038] [2020-07-21 11:43:53,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:53,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 11:43:53,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:53,630 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:53,631 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:53,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:53,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:43:53,649 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:43:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 11:43:53,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555027038] [2020-07-21 11:43:53,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:43:53,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 12 [2020-07-21 11:43:53,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719078891] [2020-07-21 11:43:53,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 11:43:53,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:53,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 11:43:53,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-21 11:43:53,709 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 12 states. [2020-07-21 11:43:53,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:53,909 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2020-07-21 11:43:53,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-21 11:43:53,910 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-07-21 11:43:53,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:53,910 INFO L225 Difference]: With dead ends: 96 [2020-07-21 11:43:53,911 INFO L226 Difference]: Without dead ends: 90 [2020-07-21 11:43:53,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-07-21 11:43:53,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-07-21 11:43:53,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 57. [2020-07-21 11:43:53,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-21 11:43:53,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-07-21 11:43:53,916 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 27 [2020-07-21 11:43:53,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:53,917 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-07-21 11:43:53,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 11:43:53,917 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-07-21 11:43:53,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 11:43:53,917 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:53,917 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] [2020-07-21 11:43:54,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:54,128 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:54,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:54,129 INFO L82 PathProgramCache]: Analyzing trace with hash -117348511, now seen corresponding path program 1 times [2020-07-21 11:43:54,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:54,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336758701] [2020-07-21 11:43:54,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:54,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 11:43:54,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:54,265 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:54,266 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:54,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:43:54,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336758701] [2020-07-21 11:43:54,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:43:54,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-21 11:43:54,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081681345] [2020-07-21 11:43:54,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 11:43:54,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:54,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 11:43:54,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-07-21 11:43:54,279 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 10 states. [2020-07-21 11:43:54,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:54,493 INFO L93 Difference]: Finished difference Result 116 states and 135 transitions. [2020-07-21 11:43:54,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-21 11:43:54,493 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-07-21 11:43:54,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:54,495 INFO L225 Difference]: With dead ends: 116 [2020-07-21 11:43:54,495 INFO L226 Difference]: Without dead ends: 114 [2020-07-21 11:43:54,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-07-21 11:43:54,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-07-21 11:43:54,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 75. [2020-07-21 11:43:54,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-21 11:43:54,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2020-07-21 11:43:54,502 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 27 [2020-07-21 11:43:54,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:54,502 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2020-07-21 11:43:54,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 11:43:54,502 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2020-07-21 11:43:54,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 11:43:54,503 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:43:54,503 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:43:54,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:54,710 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:43:54,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:43:54,711 INFO L82 PathProgramCache]: Analyzing trace with hash 886968046, now seen corresponding path program 1 times [2020-07-21 11:43:54,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:43:54,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465314027] [2020-07-21 11:43:54,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:43:54,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 11:43:54,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:43:54,888 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:43:54,889 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:43:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:43:54,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:43:54,906 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:43:54,972 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 11:43:54,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465314027] [2020-07-21 11:43:54,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:43:54,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 14 [2020-07-21 11:43:54,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943378125] [2020-07-21 11:43:54,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 11:43:54,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:43:54,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 11:43:54,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2020-07-21 11:43:54,975 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand 14 states. [2020-07-21 11:43:55,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:43:55,324 INFO L93 Difference]: Finished difference Result 141 states and 166 transitions. [2020-07-21 11:43:55,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-21 11:43:55,325 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-07-21 11:43:55,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:43:55,325 INFO L225 Difference]: With dead ends: 141 [2020-07-21 11:43:55,326 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 11:43:55,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2020-07-21 11:43:55,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 11:43:55,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 11:43:55,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 11:43:55,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 11:43:55,329 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-07-21 11:43:55,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:43:55,329 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 11:43:55,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 11:43:55,329 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 11:43:55,329 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 11:43:55,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:43:55,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 11:43:55,815 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 48 [2020-07-21 11:43:55,967 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 43 [2020-07-21 11:43:56,175 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 96 [2020-07-21 11:43:56,372 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 86 [2020-07-21 11:43:57,179 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 25 [2020-07-21 11:43:57,690 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 18 [2020-07-21 11:43:57,693 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:43:57,694 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:43:57,694 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:43:57,694 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:43:57,694 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 11:43:57,694 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:43:57,696 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:43:57,696 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-21 11:43:57,696 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-21 11:43:57,696 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-21 11:43:57,696 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-21 11:43:57,697 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 112) no Hoare annotation was computed. [2020-07-21 11:43:57,697 INFO L264 CegarLoopResult]: At program point L382(lines 280 389) the Hoare annotation is: (let ((.cse0 (<= 0 main_~main__t~0)) (.cse1 (<= 1 main_~__VERIFIER_assert__cond~13))) (or (and .cse0 (<= main_~main__t~0 0) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) .cse1) (and (< main_~main__t~0 main_~main__tagbuf_len~0) .cse0 (<= 1 main_~__VERIFIER_assert__cond~19) .cse1))) [2020-07-21 11:43:57,699 INFO L264 CegarLoopResult]: At program point L349(lines 30 393) the Hoare annotation is: (let ((.cse0 (<= 1 main_~main__t~0)) (.cse1 (<= 1 main_~__VERIFIER_assert__cond~17)) (.cse3 (not (= main_~main__tagbuf_len~0 main_~main__t~0))) (.cse2 (<= 1 main_~__VERIFIER_assert__cond~13))) (or (and (< main_~main__t~0 main_~main__tagbuf_len~0) (<= 1 main_~__VERIFIER_assert__cond~19) .cse0 .cse1 .cse2) (and (<= 0 main_~main__t~0) (<= main_~main__t~0 0) (<= 0 main_~main__tagbuf_len~0) .cse3) (and (<= main_~main__t~0 main_~main__tagbuf_len~0) .cse0 (<= main_~main__t~0 1) .cse1 .cse3 .cse2))) [2020-07-21 11:43:57,699 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 400) no Hoare annotation was computed. [2020-07-21 11:43:57,699 INFO L268 CegarLoopResult]: For program point L184(lines 184 194) no Hoare annotation was computed. [2020-07-21 11:43:57,699 INFO L268 CegarLoopResult]: For program point L374(lines 374 383) no Hoare annotation was computed. [2020-07-21 11:43:57,699 INFO L268 CegarLoopResult]: For program point L341(lines 341 350) no Hoare annotation was computed. [2020-07-21 11:43:57,699 INFO L268 CegarLoopResult]: For program point L110(lines 110 201) no Hoare annotation was computed. [2020-07-21 11:43:57,700 INFO L268 CegarLoopResult]: For program point L234(line 234) no Hoare annotation was computed. [2020-07-21 11:43:57,700 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 276) no Hoare annotation was computed. [2020-07-21 11:43:57,700 INFO L264 CegarLoopResult]: At program point L193(lines 54 251) the Hoare annotation is: (and (<= main_~main__t~0 main_~main__tagbuf_len~0) (<= 1 main_~main__t~0)) [2020-07-21 11:43:57,700 INFO L268 CegarLoopResult]: For program point L152(line 152) no Hoare annotation was computed. [2020-07-21 11:43:57,700 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 152) no Hoare annotation was computed. [2020-07-21 11:43:57,700 INFO L268 CegarLoopResult]: For program point L276(line 276) no Hoare annotation was computed. [2020-07-21 11:43:57,700 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 331) no Hoare annotation was computed. [2020-07-21 11:43:57,700 INFO L268 CegarLoopResult]: For program point L103(lines 103 207) no Hoare annotation was computed. [2020-07-21 11:43:57,700 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 11:43:57,700 INFO L268 CegarLoopResult]: For program point L37(lines 37 253) no Hoare annotation was computed. [2020-07-21 11:43:57,700 INFO L268 CegarLoopResult]: For program point L293(lines 293 315) no Hoare annotation was computed. [2020-07-21 11:43:57,700 INFO L268 CegarLoopResult]: For program point L186(line 186) no Hoare annotation was computed. [2020-07-21 11:43:57,701 INFO L268 CegarLoopResult]: For program point L376(line 376) no Hoare annotation was computed. [2020-07-21 11:43:57,701 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 140) no Hoare annotation was computed. [2020-07-21 11:43:57,701 INFO L268 CegarLoopResult]: For program point L343(line 343) no Hoare annotation was computed. [2020-07-21 11:43:57,701 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 11:43:57,701 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 400) no Hoare annotation was computed. [2020-07-21 11:43:57,701 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 307) no Hoare annotation was computed. [2020-07-21 11:43:57,701 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2020-07-21 11:43:57,701 INFO L268 CegarLoopResult]: For program point L30(lines 30 393) no Hoare annotation was computed. [2020-07-21 11:43:57,701 INFO L268 CegarLoopResult]: For program point L286(lines 286 388) no Hoare annotation was computed. [2020-07-21 11:43:57,701 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 400) the Hoare annotation is: true [2020-07-21 11:43:57,702 INFO L268 CegarLoopResult]: For program point L220(lines 220 242) no Hoare annotation was computed. [2020-07-21 11:43:57,702 INFO L268 CegarLoopResult]: For program point L22(lines 22 394) no Hoare annotation was computed. [2020-07-21 11:43:57,702 INFO L268 CegarLoopResult]: For program point L80(lines 80 90) no Hoare annotation was computed. [2020-07-21 11:43:57,702 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 186) no Hoare annotation was computed. [2020-07-21 11:43:57,702 INFO L268 CegarLoopResult]: For program point L138(lines 138 160) no Hoare annotation was computed. [2020-07-21 11:43:57,702 INFO L268 CegarLoopResult]: For program point L295(line 295) no Hoare annotation was computed. [2020-07-21 11:43:57,702 INFO L268 CegarLoopResult]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 364) no Hoare annotation was computed. [2020-07-21 11:43:57,702 INFO L268 CegarLoopResult]: For program point L122(lines 122 199) no Hoare annotation was computed. [2020-07-21 11:43:57,703 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 174) no Hoare annotation was computed. [2020-07-21 11:43:57,703 INFO L271 CegarLoopResult]: At program point L312(lines 30 393) the Hoare annotation is: true [2020-07-21 11:43:57,703 INFO L268 CegarLoopResult]: For program point L213(lines 213 248) no Hoare annotation was computed. [2020-07-21 11:43:57,703 INFO L268 CegarLoopResult]: For program point L48(lines 48 251) no Hoare annotation was computed. [2020-07-21 11:43:57,703 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 343) no Hoare annotation was computed. [2020-07-21 11:43:57,703 INFO L268 CegarLoopResult]: For program point L172(lines 172 196) no Hoare annotation was computed. [2020-07-21 11:43:57,703 INFO L268 CegarLoopResult]: For program point L362(lines 362 385) no Hoare annotation was computed. [2020-07-21 11:43:57,703 INFO L268 CegarLoopResult]: For program point L329(lines 329 352) no Hoare annotation was computed. [2020-07-21 11:43:57,703 INFO L268 CegarLoopResult]: For program point L263(lines 263 391) no Hoare annotation was computed. [2020-07-21 11:43:57,704 INFO L268 CegarLoopResult]: For program point L131(lines 131 198) no Hoare annotation was computed. [2020-07-21 11:43:57,704 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 82) no Hoare annotation was computed. [2020-07-21 11:43:57,704 INFO L268 CegarLoopResult]: For program point L222(line 222) no Hoare annotation was computed. [2020-07-21 11:43:57,704 INFO L264 CegarLoopResult]: At program point L247(lines 99 249) the Hoare annotation is: (and (<= main_~main__t~0 main_~main__tagbuf_len~0) (<= 1 main_~main__t~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0))) [2020-07-21 11:43:57,704 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 11:43:57,704 INFO L268 CegarLoopResult]: For program point L305(lines 305 313) no Hoare annotation was computed. [2020-07-21 11:43:57,704 INFO L268 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-07-21 11:43:57,704 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 234) no Hoare annotation was computed. [2020-07-21 11:43:57,704 INFO L268 CegarLoopResult]: For program point L99(lines 99 249) no Hoare annotation was computed. [2020-07-21 11:43:57,705 INFO L268 CegarLoopResult]: For program point L322(lines 322 387) no Hoare annotation was computed. [2020-07-21 11:43:57,705 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 70) no Hoare annotation was computed. [2020-07-21 11:43:57,705 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 11:43:57,705 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-07-21 11:43:57,705 INFO L268 CegarLoopResult]: For program point L174(line 174) no Hoare annotation was computed. [2020-07-21 11:43:57,705 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 222) no Hoare annotation was computed. [2020-07-21 11:43:57,705 INFO L268 CegarLoopResult]: For program point L364(line 364) no Hoare annotation was computed. [2020-07-21 11:43:57,705 INFO L268 CegarLoopResult]: For program point L331(line 331) no Hoare annotation was computed. [2020-07-21 11:43:57,705 INFO L268 CegarLoopResult]: For program point L232(lines 232 240) no Hoare annotation was computed. [2020-07-21 11:43:57,706 INFO L268 CegarLoopResult]: For program point mainErr17ASSERT_VIOLATIONERROR_FUNCTION(line 376) no Hoare annotation was computed. [2020-07-21 11:43:57,706 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 124) no Hoare annotation was computed. [2020-07-21 11:43:57,706 INFO L268 CegarLoopResult]: For program point L150(lines 150 158) no Hoare annotation was computed. [2020-07-21 11:43:57,706 INFO L268 CegarLoopResult]: For program point L307(line 307) no Hoare annotation was computed. [2020-07-21 11:43:57,706 INFO L268 CegarLoopResult]: For program point L18(lines 18 399) no Hoare annotation was computed. [2020-07-21 11:43:57,706 INFO L268 CegarLoopResult]: For program point L274(lines 274 389) no Hoare annotation was computed. [2020-07-21 11:43:57,706 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 295) no Hoare annotation was computed. [2020-07-21 11:43:57,706 INFO L268 CegarLoopResult]: For program point L68(lines 68 92) no Hoare annotation was computed. [2020-07-21 11:43:57,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:43:57 BoogieIcfgContainer [2020-07-21 11:43:57,736 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:43:57,741 INFO L168 Benchmark]: Toolchain (without parser) took 16474.51 ms. Allocated memory was 139.5 MB in the beginning and 320.3 MB in the end (delta: 180.9 MB). Free memory was 104.5 MB in the beginning and 186.2 MB in the end (delta: -81.8 MB). Peak memory consumption was 172.3 MB. Max. memory is 7.1 GB. [2020-07-21 11:43:57,743 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 11:43:57,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 454.28 ms. Allocated memory is still 139.5 MB. Free memory was 104.1 MB in the beginning and 91.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:43:57,744 INFO L168 Benchmark]: Boogie Preprocessor took 126.12 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 91.2 MB in the beginning and 180.6 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-21 11:43:57,745 INFO L168 Benchmark]: RCFGBuilder took 517.01 ms. Allocated memory is still 203.4 MB. Free memory was 180.6 MB in the beginning and 154.6 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-07-21 11:43:57,745 INFO L168 Benchmark]: TraceAbstraction took 15371.57 ms. Allocated memory was 203.4 MB in the beginning and 320.3 MB in the end (delta: 116.9 MB). Free memory was 153.9 MB in the beginning and 186.2 MB in the end (delta: -32.3 MB). Peak memory consumption was 157.8 MB. Max. memory is 7.1 GB. [2020-07-21 11:43:57,753 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 454.28 ms. Allocated memory is still 139.5 MB. Free memory was 104.1 MB in the beginning and 91.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.12 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 91.2 MB in the beginning and 180.6 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 517.01 ms. Allocated memory is still 203.4 MB. Free memory was 180.6 MB in the beginning and 154.6 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15371.57 ms. Allocated memory was 203.4 MB in the beginning and 320.3 MB in the end (delta: 116.9 MB). Free memory was 153.9 MB in the beginning and 186.2 MB in the end (delta: -32.3 MB). Peak memory consumption was 157.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 343]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 364]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 174]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 186]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 307]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 222]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 234]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 331]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 295]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 124]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 276]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 376]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 82]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 152]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 140]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 112]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 70]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: main__t <= main__tagbuf_len && 1 <= main__t - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: (main__t <= main__tagbuf_len && 1 <= main__t) && !(main__tagbuf_len == main__t) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((((main__t < main__tagbuf_len && 1 <= __VERIFIER_assert__cond) && 1 <= main__t) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) || (((0 <= main__t && main__t <= 0) && 0 <= main__tagbuf_len) && !(main__tagbuf_len == main__t))) || (((((main__t <= main__tagbuf_len && 1 <= main__t) && main__t <= 1) && 1 <= __VERIFIER_assert__cond) && !(main__tagbuf_len == main__t)) && 1 <= __VERIFIER_assert__cond) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 280]: Loop Invariant Derived loop invariant: ((((0 <= main__t && main__t <= 0) && 0 <= main__tagbuf_len) && !(main__tagbuf_len == main__t)) && 1 <= __VERIFIER_assert__cond) || (((main__t < main__tagbuf_len && 0 <= main__t) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 84 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.1s, OverallIterations: 27, TraceHistogramMax: 2, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1195 SDtfs, 2755 SDslu, 2153 SDs, 0 SdLazy, 2615 SolverSat, 316 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 686 GetRequests, 478 SyntacticMatches, 19 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, 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, 27 MinimizatonAttempts, 701 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 36 NumberOfFragments, 105 HoareAnnotationTreeSize, 9 FomulaSimplifications, 21018096870 FormulaSimplificationTreeSizeReduction, 0.8s HoareSimplificationTime, 9 FomulaSimplificationsInter, 3395599415 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 524 NumberOfCodeBlocks, 524 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 621 ConstructedInterpolants, 0 QuantifiedInterpolants, 64665 SizeOfPredicates, 105 NumberOfNonLiveVariables, 2822 ConjunctsInSsa, 205 ConjunctsInUnsatCore, 32 InterpolantComputations, 22 PerfectInterpolantSequences, 12/48 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...