/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 SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:47:18,946 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 22:47:18,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:47:18,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:47:18,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:47:18,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:47:18,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:47:18,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:47:18,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:47:18,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:47:19,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:47:19,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:47:19,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:47:19,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:47:19,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:47:19,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:47:19,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:47:19,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:47:19,030 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 22:47:19,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:47:19,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:47:19,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:47:19,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:47:19,063 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:47:19,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:47:19,063 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:47:19,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:47:19,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:47:19,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:47:19,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:47:19,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:47:19,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:47:19,066 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:47:19,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:47:19,066 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:47:19,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:47:19,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:47:19,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:47:19,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:47:19,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:47:19,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:47:19,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:47:19,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:47:19,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:47:19,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:47:19,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:47:19,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:47:19,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:47:19,069 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 -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 22:47:19,350 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:47:19,369 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:47:19,375 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:47:19,376 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:47:19,380 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:47:19,381 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-07-21 22:47:19,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e88dc06f/f799f6f2349f40f29b8a309cd9fba4ac/FLAG91f81fb80 [2020-07-21 22:47:20,056 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:47:20,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-07-21 22:47:20,071 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e88dc06f/f799f6f2349f40f29b8a309cd9fba4ac/FLAG91f81fb80 [2020-07-21 22:47:20,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e88dc06f/f799f6f2349f40f29b8a309cd9fba4ac [2020-07-21 22:47:20,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:47:20,240 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:47:20,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:47:20,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:47:20,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:47:20,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:47:20" (1/1) ... [2020-07-21 22:47:20,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b00a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:20, skipping insertion in model container [2020-07-21 22:47:20,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:47:20" (1/1) ... [2020-07-21 22:47:20,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:47:20,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:47:20,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:47:20,822 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:47:21,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:47:21,131 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:47:21,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:21 WrapperNode [2020-07-21 22:47:21,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:47:21,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:47:21,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:47:21,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:47:21,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:21" (1/1) ... [2020-07-21 22:47:21,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:21" (1/1) ... [2020-07-21 22:47:21,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:21" (1/1) ... [2020-07-21 22:47:21,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:21" (1/1) ... [2020-07-21 22:47:21,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:21" (1/1) ... [2020-07-21 22:47:21,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:21" (1/1) ... [2020-07-21 22:47:21,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:21" (1/1) ... [2020-07-21 22:47:21,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:47:21,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:47:21,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:47:21,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:47:21,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:21" (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 22:47:21,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:47:21,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:47:21,361 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 22:47:21,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:47:21,361 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 22:47:21,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:47:21,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:47:21,362 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 22:47:21,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:47:21,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:47:21,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:47:22,534 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:47:22,534 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 22:47:22,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:47:22 BoogieIcfgContainer [2020-07-21 22:47:22,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:47:22,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:47:22,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:47:22,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:47:22,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:47:20" (1/3) ... [2020-07-21 22:47:22,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3786070e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:47:22, skipping insertion in model container [2020-07-21 22:47:22,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:21" (2/3) ... [2020-07-21 22:47:22,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3786070e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:47:22, skipping insertion in model container [2020-07-21 22:47:22,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:47:22" (3/3) ... [2020-07-21 22:47:22,556 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label00.c [2020-07-21 22:47:22,569 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:47:22,581 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:47:22,599 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:47:22,642 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:47:22,643 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:47:22,643 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:47:22,644 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:47:22,644 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:47:22,644 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:47:22,644 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:47:22,644 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:47:22,673 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 22:47:22,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-07-21 22:47:22,698 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:47:22,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:47:22,700 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:47:22,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:47:22,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1845535338, now seen corresponding path program 1 times [2020-07-21 22:47:22,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:47:22,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004467200] [2020-07-21 22:47:22,719 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 22:47:22,907 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:47:22,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:47:22,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-21 22:47:22,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:47:23,278 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-07-21 22:47:23,408 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2020-07-21 22:47:23,843 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 22:47:23,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:47:23,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004467200] [2020-07-21 22:47:23,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:47:23,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 22:47:23,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008597360] [2020-07-21 22:47:23,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 22:47:23,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:47:23,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 22:47:23,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 22:47:23,877 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 11 states. [2020-07-21 22:47:25,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:47:25,740 INFO L93 Difference]: Finished difference Result 472 states and 791 transitions. [2020-07-21 22:47:25,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:47:25,744 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 114 [2020-07-21 22:47:25,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:47:25,768 INFO L225 Difference]: With dead ends: 472 [2020-07-21 22:47:25,769 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 22:47:25,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-07-21 22:47:25,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 22:47:25,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-07-21 22:47:25,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-21 22:47:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2020-07-21 22:47:25,844 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 114 [2020-07-21 22:47:25,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:47:25,845 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2020-07-21 22:47:25,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 22:47:25,845 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2020-07-21 22:47:25,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-07-21 22:47:25,849 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:47:25,849 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:47:26,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:47:26,064 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:47:26,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:47:26,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1917115313, now seen corresponding path program 1 times [2020-07-21 22:47:26,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:47:26,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224142479] [2020-07-21 22:47:26,066 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 22:47:26,183 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:47:26,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:47:26,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-21 22:47:26,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:47:26,499 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2020-07-21 22:47:26,875 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:47:26,879 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 22:47:26,879 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 22:47:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:47:26,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:47:27,705 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-07-21 22:47:27,998 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 22:47:28,142 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 22:47:28,148 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 7 conjuncts [2020-07-21 22:47:28,150 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 6 conjuncts [2020-07-21 22:47:28,152 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 22:47:28,153 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 22:47:28,155 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:47:28,156 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:47:28,160 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 22:47:28,162 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 22:47:28,163 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:47:28,171 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:47:28,173 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:47:28,175 INFO L501 QuantifierPusher]: Distributing 14 disjuncts over 3 conjuncts [2020-07-21 22:47:28,177 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:47:28,178 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:47:28,179 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:47:28,183 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:47:28,184 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:47:28,186 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:47:28,187 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:47:28,189 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:47:28,190 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:47:28,196 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:47:28,197 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:47:28,201 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:47:28,202 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:47:28,809 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-07-21 22:47:28,812 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 7, 1] term [2020-07-21 22:47:28,813 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:47:28,875 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:47:28,876 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:28,940 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:28,965 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:47:29,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224142479] [2020-07-21 22:47:29,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:47:29,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2020-07-21 22:47:29,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609162565] [2020-07-21 22:47:29,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 22:47:29,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:47:29,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 22:47:29,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-07-21 22:47:29,166 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand 25 states. [2020-07-21 22:47:30,054 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 22:47:30,543 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-07-21 22:47:30,853 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-07-21 22:47:31,308 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 22:47:31,521 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-07-21 22:47:31,908 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-07-21 22:47:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:47:34,064 INFO L93 Difference]: Finished difference Result 588 states and 878 transitions. [2020-07-21 22:47:34,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 22:47:34,066 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 122 [2020-07-21 22:47:34,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:47:34,073 INFO L225 Difference]: With dead ends: 588 [2020-07-21 22:47:34,074 INFO L226 Difference]: Without dead ends: 451 [2020-07-21 22:47:34,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 216 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=551, Invalid=1611, Unknown=0, NotChecked=0, Total=2162 [2020-07-21 22:47:34,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-07-21 22:47:34,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 417. [2020-07-21 22:47:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-21 22:47:34,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 548 transitions. [2020-07-21 22:47:34,134 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 548 transitions. Word has length 122 [2020-07-21 22:47:34,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:47:34,135 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 548 transitions. [2020-07-21 22:47:34,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 22:47:34,135 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 548 transitions. [2020-07-21 22:47:34,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-21 22:47:34,140 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:47:34,140 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:47:34,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:47:34,354 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:47:34,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:47:34,355 INFO L82 PathProgramCache]: Analyzing trace with hash -526425041, now seen corresponding path program 1 times [2020-07-21 22:47:34,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:47:34,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634030553] [2020-07-21 22:47:34,357 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 22:47:34,467 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:47:34,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:47:34,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:47:34,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:47:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:47:34,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:47:34,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634030553] [2020-07-21 22:47:34,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:47:34,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:47:34,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176301842] [2020-07-21 22:47:34,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:47:34,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:47:34,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:47:34,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:47:34,531 INFO L87 Difference]: Start difference. First operand 417 states and 548 transitions. Second operand 3 states. [2020-07-21 22:47:35,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:47:35,184 INFO L93 Difference]: Finished difference Result 1042 states and 1433 transitions. [2020-07-21 22:47:35,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:47:35,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-07-21 22:47:35,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:47:35,197 INFO L225 Difference]: With dead ends: 1042 [2020-07-21 22:47:35,197 INFO L226 Difference]: Without dead ends: 691 [2020-07-21 22:47:35,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:47:35,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-07-21 22:47:35,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2020-07-21 22:47:35,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-07-21 22:47:35,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 897 transitions. [2020-07-21 22:47:35,240 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 897 transitions. Word has length 125 [2020-07-21 22:47:35,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:47:35,241 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 897 transitions. [2020-07-21 22:47:35,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:47:35,241 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 897 transitions. [2020-07-21 22:47:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-07-21 22:47:35,246 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:47:35,247 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:47:35,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:47:35,461 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:47:35,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:47:35,462 INFO L82 PathProgramCache]: Analyzing trace with hash 925525486, now seen corresponding path program 1 times [2020-07-21 22:47:35,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:47:35,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85702822] [2020-07-21 22:47:35,463 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 22:47:35,549 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 22:47:35,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:47:35,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:47:35,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:47:35,616 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:47:35,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:47:35,827 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 22:47:35,877 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:35,878 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[4, 2, 1] term [2020-07-21 22:47:35,879 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:47:35,880 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:47:35,880 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:35,881 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:35,986 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:47:35,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85702822] [2020-07-21 22:47:35,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:47:35,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:47:35,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585770175] [2020-07-21 22:47:35,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:47:35,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:47:35,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:47:35,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:47:35,988 INFO L87 Difference]: Start difference. First operand 691 states and 897 transitions. Second operand 7 states. [2020-07-21 22:47:37,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:47:37,529 INFO L93 Difference]: Finished difference Result 1933 states and 2552 transitions. [2020-07-21 22:47:37,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:47:37,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-07-21 22:47:37,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:47:37,538 INFO L225 Difference]: With dead ends: 1933 [2020-07-21 22:47:37,538 INFO L226 Difference]: Without dead ends: 1169 [2020-07-21 22:47:37,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 22:47:37,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2020-07-21 22:47:37,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1106. [2020-07-21 22:47:37,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1106 states. [2020-07-21 22:47:37,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1302 transitions. [2020-07-21 22:47:37,591 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1302 transitions. Word has length 140 [2020-07-21 22:47:37,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:47:37,591 INFO L479 AbstractCegarLoop]: Abstraction has 1106 states and 1302 transitions. [2020-07-21 22:47:37,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:47:37,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1302 transitions. [2020-07-21 22:47:37,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-07-21 22:47:37,596 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:47:37,597 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:47:37,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:47:37,811 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:47:37,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:47:37,811 INFO L82 PathProgramCache]: Analyzing trace with hash -2022557590, now seen corresponding path program 1 times [2020-07-21 22:47:37,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:47:37,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822772620] [2020-07-21 22:47:37,812 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 22:47:37,956 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:47:37,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:47:37,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 29 conjunts are in the unsatisfiable core [2020-07-21 22:47:37,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:47:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 22:47:38,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:47:38,250 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 22:47:38,298 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:38,299 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:38,300 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:47:38,301 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:38,302 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:38,303 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:47:38,303 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:38,556 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 22:47:38,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822772620] [2020-07-21 22:47:38,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 22:47:38,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-07-21 22:47:38,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311976506] [2020-07-21 22:47:38,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:47:38,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:47:38,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:47:38,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:47:38,559 INFO L87 Difference]: Start difference. First operand 1106 states and 1302 transitions. Second operand 5 states. [2020-07-21 22:47:39,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:47:39,551 INFO L93 Difference]: Finished difference Result 3121 states and 3747 transitions. [2020-07-21 22:47:39,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 22:47:39,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-07-21 22:47:39,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:47:39,566 INFO L225 Difference]: With dead ends: 3121 [2020-07-21 22:47:39,566 INFO L226 Difference]: Without dead ends: 2081 [2020-07-21 22:47:39,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 332 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:47:39,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2020-07-21 22:47:39,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 1944. [2020-07-21 22:47:39,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1944 states. [2020-07-21 22:47:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2231 transitions. [2020-07-21 22:47:39,668 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2231 transitions. Word has length 170 [2020-07-21 22:47:39,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:47:39,668 INFO L479 AbstractCegarLoop]: Abstraction has 1944 states and 2231 transitions. [2020-07-21 22:47:39,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:47:39,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2231 transitions. [2020-07-21 22:47:39,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-07-21 22:47:39,675 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:47:39,676 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:47:39,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:47:39,890 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:47:39,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:47:39,891 INFO L82 PathProgramCache]: Analyzing trace with hash 965515141, now seen corresponding path program 1 times [2020-07-21 22:47:39,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:47:39,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181253485] [2020-07-21 22:47:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 22:47:40,055 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:47:40,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:47:40,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 22:47:40,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:47:40,089 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 22:47:40,090 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:47:40,210 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 76 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 22:47:40,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:47:40,425 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 22:47:40,478 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:40,479 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:40,480 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 22:47:40,480 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:47:40,481 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:47:40,481 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:40,482 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:40,482 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:40,483 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:40,484 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:47:40,485 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:40,518 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:47:40,572 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:40,574 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:47:40,727 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 22:47:40,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181253485] [2020-07-21 22:47:40,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:47:40,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2020-07-21 22:47:40,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983296543] [2020-07-21 22:47:40,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 22:47:40,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:47:40,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 22:47:40,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:47:40,730 INFO L87 Difference]: Start difference. First operand 1944 states and 2231 transitions. Second operand 8 states. [2020-07-21 22:47:41,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:47:41,879 INFO L93 Difference]: Finished difference Result 4944 states and 5832 transitions. [2020-07-21 22:47:41,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 22:47:41,880 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2020-07-21 22:47:41,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:47:41,900 INFO L225 Difference]: With dead ends: 4944 [2020-07-21 22:47:41,900 INFO L226 Difference]: Without dead ends: 3066 [2020-07-21 22:47:41,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 367 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-07-21 22:47:41,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2020-07-21 22:47:42,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 2778. [2020-07-21 22:47:42,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2778 states. [2020-07-21 22:47:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 3202 transitions. [2020-07-21 22:47:42,056 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 3202 transitions. Word has length 187 [2020-07-21 22:47:42,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:47:42,057 INFO L479 AbstractCegarLoop]: Abstraction has 2778 states and 3202 transitions. [2020-07-21 22:47:42,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 22:47:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 3202 transitions. [2020-07-21 22:47:42,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-07-21 22:47:42,065 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:47:42,066 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:47:42,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:47:42,282 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:47:42,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:47:42,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1546983835, now seen corresponding path program 1 times [2020-07-21 22:47:42,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:47:42,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109219801] [2020-07-21 22:47:42,284 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 22:47:42,402 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:47:42,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:47:42,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:47:42,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:47:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 22:47:42,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:47:42,569 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 141 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 22:47:42,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109219801] [2020-07-21 22:47:42,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:47:42,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:47:42,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656266351] [2020-07-21 22:47:42,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:47:42,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:47:42,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:47:42,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:47:42,572 INFO L87 Difference]: Start difference. First operand 2778 states and 3202 transitions. Second operand 7 states. [2020-07-21 22:47:43,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:47:43,894 INFO L93 Difference]: Finished difference Result 5901 states and 6849 transitions. [2020-07-21 22:47:43,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 22:47:43,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-07-21 22:47:43,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:47:43,915 INFO L225 Difference]: With dead ends: 5901 [2020-07-21 22:47:43,915 INFO L226 Difference]: Without dead ends: 3189 [2020-07-21 22:47:43,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 439 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-07-21 22:47:43,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2020-07-21 22:47:43,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 2232. [2020-07-21 22:47:43,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2232 states. [2020-07-21 22:47:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 2528 transitions. [2020-07-21 22:47:43,987 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 2528 transitions. Word has length 221 [2020-07-21 22:47:43,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:47:43,988 INFO L479 AbstractCegarLoop]: Abstraction has 2232 states and 2528 transitions. [2020-07-21 22:47:43,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:47:43,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 2528 transitions. [2020-07-21 22:47:43,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-07-21 22:47:43,995 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:47:43,995 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:47:44,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:47:44,209 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:47:44,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:47:44,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1414099281, now seen corresponding path program 1 times [2020-07-21 22:47:44,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:47:44,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140626736] [2020-07-21 22:47:44,211 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 22:47:44,375 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:47:44,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:47:44,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:47:44,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:47:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-07-21 22:47:44,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:47:44,657 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 22:47:44,698 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:44,699 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:44,701 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:44,702 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[4, 2, 1] term [2020-07-21 22:47:44,702 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:44,703 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:47:44,703 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:47:44,844 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-07-21 22:47:44,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140626736] [2020-07-21 22:47:44,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:47:44,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:47:44,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120843672] [2020-07-21 22:47:44,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:47:44,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:47:44,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:47:44,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:47:44,846 INFO L87 Difference]: Start difference. First operand 2232 states and 2528 transitions. Second operand 7 states. [2020-07-21 22:47:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:47:46,247 INFO L93 Difference]: Finished difference Result 5782 states and 6646 transitions. [2020-07-21 22:47:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:47:46,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2020-07-21 22:47:46,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:47:46,267 INFO L225 Difference]: With dead ends: 5782 [2020-07-21 22:47:46,267 INFO L226 Difference]: Without dead ends: 3616 [2020-07-21 22:47:46,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 484 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:47:46,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2020-07-21 22:47:46,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 3475. [2020-07-21 22:47:46,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3475 states. [2020-07-21 22:47:46,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3475 states to 3475 states and 3945 transitions. [2020-07-21 22:47:46,356 INFO L78 Accepts]: Start accepts. Automaton has 3475 states and 3945 transitions. Word has length 243 [2020-07-21 22:47:46,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:47:46,357 INFO L479 AbstractCegarLoop]: Abstraction has 3475 states and 3945 transitions. [2020-07-21 22:47:46,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:47:46,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3475 states and 3945 transitions. [2020-07-21 22:47:46,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-07-21 22:47:46,367 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:47:46,367 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:47:46,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:47:46,581 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:47:46,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:47:46,581 INFO L82 PathProgramCache]: Analyzing trace with hash 20807594, now seen corresponding path program 1 times [2020-07-21 22:47:46,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:47:46,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129297415] [2020-07-21 22:47:46,582 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 22:47:46,753 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:47:46,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:47:46,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:47:46,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:47:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:47:46,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:47:46,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129297415] [2020-07-21 22:47:46,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:47:46,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:47:46,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799867565] [2020-07-21 22:47:46,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:47:46,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:47:46,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:47:46,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:47:46,810 INFO L87 Difference]: Start difference. First operand 3475 states and 3945 transitions. Second operand 3 states. [2020-07-21 22:47:47,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:47:47,373 INFO L93 Difference]: Finished difference Result 5635 states and 6411 transitions. [2020-07-21 22:47:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:47:47,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 256 [2020-07-21 22:47:47,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:47:47,388 INFO L225 Difference]: With dead ends: 5635 [2020-07-21 22:47:47,388 INFO L226 Difference]: Without dead ends: 2226 [2020-07-21 22:47:47,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:47:47,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2020-07-21 22:47:47,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 2091. [2020-07-21 22:47:47,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2091 states. [2020-07-21 22:47:47,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 2305 transitions. [2020-07-21 22:47:47,445 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 2305 transitions. Word has length 256 [2020-07-21 22:47:47,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:47:47,446 INFO L479 AbstractCegarLoop]: Abstraction has 2091 states and 2305 transitions. [2020-07-21 22:47:47,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:47:47,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 2305 transitions. [2020-07-21 22:47:47,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-07-21 22:47:47,454 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:47:47,454 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:47:47,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:47:47,669 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:47:47,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:47:47,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1510705709, now seen corresponding path program 1 times [2020-07-21 22:47:47,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:47:47,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792751001] [2020-07-21 22:47:47,670 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 22:47:47,844 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:47:47,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:47:47,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:47:47,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:47:47,920 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-07-21 22:47:47,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:47:47,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792751001] [2020-07-21 22:47:47,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:47:47,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:47:47,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520527936] [2020-07-21 22:47:47,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:47:47,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:47:47,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:47:47,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:47:47,923 INFO L87 Difference]: Start difference. First operand 2091 states and 2305 transitions. Second operand 3 states. [2020-07-21 22:47:48,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:47:48,534 INFO L93 Difference]: Finished difference Result 4114 states and 4541 transitions. [2020-07-21 22:47:48,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:47:48,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 276 [2020-07-21 22:47:48,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:47:48,540 INFO L225 Difference]: With dead ends: 4114 [2020-07-21 22:47:48,540 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 22:47:48,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:47:48,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 22:47:48,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 22:47:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 22:47:48,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 22:47:48,548 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 276 [2020-07-21 22:47:48,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:47:48,549 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 22:47:48,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:47:48,549 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 22:47:48,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 22:47:48,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:47:48,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 22:47:49,366 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 118 [2020-07-21 22:47:51,485 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 218 DAG size of output: 129 [2020-07-21 22:47:52,236 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 64 [2020-07-21 22:47:52,909 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 64 [2020-07-21 22:47:52,913 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:47:52,913 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a16~0 |old(~a16~0)|) (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (<= |old(~a16~0)| ~a16~0) (let ((.cse2 (= 1 |old(~a20~0)|)) (.cse3 (= 1 |old(~a21~0)|))) (or (let ((.cse0 (= 1 ~a20~0)) (.cse1 (= 1 ~a21~0))) (and (or (not .cse0) .cse1) (or .cse0 (not .cse1)))) (and (not .cse2) .cse3) (and .cse2 (not .cse3)))) (= ~a21~0 |old(~a21~0)|)) [2020-07-21 22:47:52,914 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:47:52,914 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 22:47:52,914 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 22:47:52,914 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,914 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,914 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,914 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,914 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,915 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,915 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 22:47:52,915 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 22:47:52,915 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 22:47:52,916 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 22:47:52,916 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 22:47:52,916 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 22:47:52,916 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 22:47:52,916 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 22:47:52,916 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 22:47:52,916 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 22:47:52,917 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,917 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,917 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,917 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,917 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,917 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,917 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 22:47:52,917 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 22:47:52,918 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 22:47:52,918 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 22:47:52,918 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 22:47:52,918 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 22:47:52,918 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 22:47:52,918 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 22:47:52,918 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 22:47:52,918 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 22:47:52,918 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 22:47:52,919 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 500) no Hoare annotation was computed. [2020-07-21 22:47:52,919 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 22:47:52,919 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 22:47:52,919 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 22:47:52,919 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 22:47:52,919 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,919 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,919 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,919 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,920 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,920 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 22:47:52,920 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 22:47:52,920 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 22:47:52,920 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 22:47:52,920 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 22:47:52,920 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 22:47:52,920 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 22:47:52,920 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 22:47:52,921 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 22:47:52,921 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,921 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,921 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,921 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,921 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,921 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 22:47:52,922 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 22:47:52,922 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 22:47:52,922 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 22:47:52,923 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 22:47:52,923 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 22:47:52,923 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 22:47:52,923 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 22:47:52,923 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 22:47:52,923 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 22:47:52,923 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 22:47:52,923 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 22:47:52,924 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 22:47:52,924 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,924 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,924 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,924 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,924 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,924 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 22:47:52,924 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 22:47:52,925 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 22:47:52,925 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 22:47:52,925 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 22:47:52,925 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 22:47:52,925 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 22:47:52,925 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 22:47:52,925 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 22:47:52,928 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,929 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,929 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,929 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,929 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,929 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,929 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 22:47:52,929 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,929 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 22:47:52,929 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 22:47:52,929 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 22:47:52,930 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 22:47:52,930 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 22:47:52,930 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 22:47:52,930 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 22:47:52,930 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 22:47:52,930 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 22:47:52,930 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 22:47:52,930 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 22:47:52,930 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 22:47:52,930 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 22:47:52,931 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,931 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,931 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,931 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,931 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,931 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 22:47:52,931 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 22:47:52,931 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 22:47:52,932 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 22:47:52,932 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 22:47:52,932 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 22:47:52,932 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 22:47:52,932 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 22:47:52,932 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,932 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,932 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,933 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,933 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,933 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 22:47:52,933 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 22:47:52,933 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 22:47:52,933 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 22:47:52,933 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 22:47:52,933 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 22:47:52,933 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 22:47:52,933 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 22:47:52,933 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 22:47:52,933 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 22:47:52,934 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse35 (= 1 |old(~a7~0)|)) (.cse34 (= 1 |old(~a21~0)|)) (.cse33 (= 1 |old(~a20~0)|))) (let ((.cse32 (not .cse33)) (.cse4 (not .cse34)) (.cse2 (not .cse35)) (.cse31 (= 1 ~a20~0)) (.cse15 (<= ~a16~0 |old(~a16~0)|)) (.cse19 (<= |old(~a16~0)| ~a16~0)) (.cse1 (= ~a21~0 |old(~a21~0)|)) (.cse16 (= ~a7~0 |old(~a7~0)|)) (.cse17 (= ~a17~0 |old(~a17~0)|)) (.cse30 (<= ~a16~0 5)) (.cse20 (= 1 ~a21~0)) (.cse18 (< 4 ~a16~0))) (let ((.cse7 (not (<= |old(~a21~0)| 0))) (.cse3 (not (<= |old(~a16~0)| 4))) (.cse12 (and .cse16 .cse17 .cse30 .cse20 .cse18)) (.cse22 (and .cse15 .cse16 .cse17 .cse19 .cse1)) (.cse24 (= 1 ~a17~0)) (.cse26 (not (<= 6 |old(~a16~0)|))) (.cse5 (and (not .cse31) (not .cse20))) (.cse6 (and .cse20 .cse31)) (.cse21 (and (or .cse35 .cse4) (or .cse2 .cse34))) (.cse23 (or .cse31 (and .cse32 .cse34) (and .cse33 .cse4))) (.cse0 (= 1 ~a7~0)) (.cse13 (not (<= |old(~a17~0)| 0))) (.cse27 (not (= 15 |old(~a8~0)|))) (.cse10 (not (<= |old(~a16~0)| 5))) (.cse29 (and (not (= 6 |calculate_output_#in~input|)) (not (= 1 |calculate_output_#in~input|)) (not (= 2 |calculate_output_#in~input|)) (not (= 4 |calculate_output_#in~input|)) (not (= 5 |calculate_output_#in~input|)) (not (= 3 |calculate_output_#in~input|)))) (.cse28 (= 15 ~a8~0)) (.cse9 (not (<= |old(~a7~0)| 0))) (.cse11 (not (< 4 |old(~a16~0)|))) (.cse25 (not (= 1 |old(~a17~0)|))) (.cse8 (and (or .cse32 .cse4) (or .cse33 .cse34))) (.cse14 (not (= 8 ~a12~0)))) (and (or (and .cse0 .cse1 (<= ~a16~0 4)) .cse2 .cse3 .cse4) (or .cse5 .cse6 .cse7 .cse8) (or .cse9 .cse10 .cse11 .cse12 .cse4 .cse13 .cse14) (or .cse9 .cse11 .cse8 (and .cse15 .cse16 .cse17 .cse18 .cse1 (or .cse5 .cse6)) .cse13 .cse14) (or .cse9 .cse3 (and .cse15 .cse16 .cse17 .cse19 .cse20) .cse13 .cse14 .cse21) (or .cse22 .cse7) (or (and .cse15 .cse23 .cse16 .cse19 .cse24 .cse1) .cse9 .cse25 .cse3 .cse14 .cse21) (or .cse9 .cse10 .cse11 .cse25 .cse12 .cse4 .cse14) (or .cse22 .cse9 .cse26 .cse13 .cse14) (or .cse9 (and .cse15 .cse16 .cse19 .cse24 .cse1) .cse25 .cse4 .cse26 .cse14) (or .cse27 (and (<= ~a20~0 0) .cse28) .cse9 .cse10 .cse11 (not (<= |old(~a20~0)| 0)) .cse25 .cse29 .cse4 .cse14) (or .cse5 .cse6 .cse9 .cse8 .cse13 .cse14 .cse21) (or .cse2 .cse10 .cse11 (and .cse23 .cse0 .cse17 .cse30 .cse18 .cse1) .cse4 .cse13) (or .cse27 .cse9 .cse10 .cse11 .cse25 .cse8 .cse29 .cse4 .cse28 .cse14) (or .cse9 .cse11 .cse25 .cse8 .cse31 .cse4 .cse14))))) [2020-07-21 22:47:52,934 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 22:47:52,934 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,934 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,934 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,934 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,934 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 22:47:52,934 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,934 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,934 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 22:47:52,934 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 22:47:52,935 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 22:47:52,935 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 22:47:52,935 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 22:47:52,935 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 22:47:52,935 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 22:47:52,935 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 22:47:52,935 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 22:47:52,935 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 22:47:52,935 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 22:47:52,935 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 22:47:52,935 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,935 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,935 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,935 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,936 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,936 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 22:47:52,936 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,936 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 22:47:52,936 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 22:47:52,936 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 22:47:52,936 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 22:47:52,936 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 22:47:52,937 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 22:47:52,937 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 22:47:52,937 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 22:47:52,937 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 22:47:52,937 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 22:47:52,937 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 22:47:52,937 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 22:47:52,937 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 22:47:52,937 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 22:47:52,938 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,938 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,938 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,938 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,938 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,938 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:47:52,938 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 22:47:52,938 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 22:47:52,938 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 22:47:52,939 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 22:47:52,939 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 22:47:52,939 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 22:47:52,939 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 22:47:52,939 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 22:47:52,939 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 22:47:52,939 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 22:47:52,939 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:47:52,939 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (= 1 ~a17~0) (= 1 ~a21~0) (= 1 ~a20~0) (= 15 ~a8~0) (= 5 ~a16~0) (= 8 ~a12~0)) [2020-07-21 22:47:52,940 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 22:47:52,940 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:47:52,940 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (= 1 |old(~a20~0)|)) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0)) (and (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (= 1 ~a21~0) (= 1 ~a20~0) (= 15 ~a8~0) (= 5 ~a16~0))) [2020-07-21 22:47:52,940 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 22:47:52,940 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse0 (= 1 ~a7~0)) (.cse8 (<= 6 ~a16~0)) (.cse1 (<= ~a17~0 0)) (.cse10 (<= ~a16~0 4)) (.cse4 (not (= 1 |old(~a7~0)|))) (.cse5 (<= ~a7~0 0)) (.cse9 (= 1 ~a17~0)) (.cse2 (<= ~a16~0 5)) (.cse3 (= 1 ~a21~0)) (.cse6 (< 4 ~a16~0)) (.cse7 (= 8 ~a12~0))) (or (<= ~a21~0 0) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse1 .cse5 .cse2 .cse3 .cse6 .cse7) (and .cse8 .cse5 .cse9 .cse3 .cse7) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (and .cse4 .cse5 .cse9 .cse3 .cse10 .cse7) (and .cse0 .cse3 .cse10) (not (= 1 |old(~a20~0)|)) (not (<= |old(~a16~0)| 5)) (and .cse1 .cse8 .cse5 .cse7) (and .cse1 .cse5 (not (= 1 ~a20~0)) .cse6) (and .cse4 .cse1 .cse5 .cse3 .cse10 .cse7) (not (= 1 |old(~a21~0)|)) (not .cse7) (and .cse4 .cse5 .cse9 .cse2 .cse3 .cse6 .cse7))) [2020-07-21 22:47:52,940 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 22:47:52,940 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 22:47:52,941 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse0 (= 1 ~a7~0)) (.cse8 (<= 6 ~a16~0)) (.cse1 (<= ~a17~0 0)) (.cse10 (<= ~a16~0 4)) (.cse4 (not (= 1 |old(~a7~0)|))) (.cse5 (<= ~a7~0 0)) (.cse9 (= 1 ~a17~0)) (.cse2 (<= ~a16~0 5)) (.cse3 (= 1 ~a21~0)) (.cse6 (< 4 ~a16~0)) (.cse7 (= 8 ~a12~0))) (or (<= ~a21~0 0) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse1 .cse5 .cse2 .cse3 .cse6 .cse7) (and .cse8 .cse5 .cse9 .cse3 .cse7) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (and .cse4 .cse5 .cse9 .cse3 .cse10 .cse7) (and .cse0 .cse3 .cse10) (not (= 1 |old(~a20~0)|)) (not (<= |old(~a16~0)| 5)) (and .cse1 .cse8 .cse5 .cse7) (and .cse1 .cse5 (not (= 1 ~a20~0)) .cse6) (and .cse4 .cse1 .cse5 .cse3 .cse10 .cse7) (not (= 1 |old(~a21~0)|)) (not .cse7) (and .cse4 .cse5 .cse9 .cse2 .cse3 .cse6 .cse7))) [2020-07-21 22:47:52,941 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 22:47:52,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:47:52 BoogieIcfgContainer [2020-07-21 22:47:52,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:47:52,967 INFO L168 Benchmark]: Toolchain (without parser) took 32729.52 ms. Allocated memory was 146.3 MB in the beginning and 594.0 MB in the end (delta: 447.7 MB). Free memory was 102.4 MB in the beginning and 464.7 MB in the end (delta: -362.3 MB). Peak memory consumption was 431.0 MB. Max. memory is 7.1 GB. [2020-07-21 22:47:52,968 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 22:47:52,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 892.16 ms. Allocated memory was 146.3 MB in the beginning and 207.1 MB in the end (delta: 60.8 MB). Free memory was 102.0 MB in the beginning and 173.8 MB in the end (delta: -71.8 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. [2020-07-21 22:47:52,969 INFO L168 Benchmark]: Boogie Preprocessor took 149.63 ms. Allocated memory is still 207.1 MB. Free memory was 173.8 MB in the beginning and 168.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-07-21 22:47:52,970 INFO L168 Benchmark]: RCFGBuilder took 1261.46 ms. Allocated memory was 207.1 MB in the beginning and 240.1 MB in the end (delta: 33.0 MB). Free memory was 168.7 MB in the beginning and 182.5 MB in the end (delta: -13.8 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. [2020-07-21 22:47:52,971 INFO L168 Benchmark]: TraceAbstraction took 30418.95 ms. Allocated memory was 240.1 MB in the beginning and 594.0 MB in the end (delta: 353.9 MB). Free memory was 181.1 MB in the beginning and 464.7 MB in the end (delta: -283.7 MB). Peak memory consumption was 415.8 MB. Max. memory is 7.1 GB. [2020-07-21 22:47:52,975 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 892.16 ms. Allocated memory was 146.3 MB in the beginning and 207.1 MB in the end (delta: 60.8 MB). Free memory was 102.0 MB in the beginning and 173.8 MB in the end (delta: -71.8 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.63 ms. Allocated memory is still 207.1 MB. Free memory was 173.8 MB in the beginning and 168.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1261.46 ms. Allocated memory was 207.1 MB in the beginning and 240.1 MB in the end (delta: 33.0 MB). Free memory was 168.7 MB in the beginning and 182.5 MB in the end (delta: -13.8 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30418.95 ms. Allocated memory was 240.1 MB in the beginning and 594.0 MB in the end (delta: 353.9 MB). Free memory was 181.1 MB in the beginning and 464.7 MB in the end (delta: -283.7 MB). Peak memory consumption was 415.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 500]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 583]: Loop Invariant Derived loop invariant: ((((((((((((((((a21 <= 0 || !(15 == \old(a8))) || !(\old(a7) <= 0)) || (((1 == a7 && a17 <= 0) && a16 <= 5) && 1 == a21)) || ((((((!(1 == \old(a7)) && a17 <= 0) && a7 <= 0) && a16 <= 5) && 1 == a21) && 4 < a16) && 8 == a12)) || ((((6 <= a16 && a7 <= 0) && 1 == a17) && 1 == a21) && 8 == a12)) || !(4 < \old(a16))) || !(1 == \old(a17))) || (((((!(1 == \old(a7)) && a7 <= 0) && 1 == a17) && 1 == a21) && a16 <= 4) && 8 == a12)) || ((1 == a7 && 1 == a21) && a16 <= 4)) || !(1 == \old(a20))) || !(\old(a16) <= 5)) || (((a17 <= 0 && 6 <= a16) && a7 <= 0) && 8 == a12)) || (((a17 <= 0 && a7 <= 0) && !(1 == a20)) && 4 < a16)) || (((((!(1 == \old(a7)) && a17 <= 0) && a7 <= 0) && 1 == a21) && a16 <= 4) && 8 == a12)) || !(1 == \old(a21))) || !(8 == a12)) || ((((((!(1 == \old(a7)) && a7 <= 0) && 1 == a17) && a16 <= 5) && 1 == a21) && 4 < a16) && 8 == a12) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 26.1s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 15.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 762 SDtfs, 4163 SDslu, 430 SDs, 0 SdLazy, 8965 SolverSat, 1164 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2984 GetRequests, 2869 SyntacticMatches, 10 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3475occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 1755 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 134 PreInvPairs, 168 NumberOfFragments, 1223 HoareAnnotationTreeSize, 134 FomulaSimplifications, 3236 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 7 FomulaSimplificationsInter, 8484 FormulaSimplificationTreeSizeReductionInter, 3.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 1854 NumberOfCodeBlocks, 1347 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 2921 ConstructedInterpolants, 0 QuantifiedInterpolants, 3318002 SizeOfPredicates, 66 NumberOfNonLiveVariables, 4295 ConjunctsInSsa, 203 ConjunctsInUnsatCore, 16 InterpolantComputations, 5 PerfectInterpolantSequences, 1675/1725 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...