/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/Problem10_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:57:53,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:57:53,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:57:53,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:57:53,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:57:53,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:57:53,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:57:53,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:57:53,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:57:53,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:57:53,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:57:53,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:57:53,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:57:53,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:57:53,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:57:53,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:57:53,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:57:53,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:57:53,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:57:53,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:57:53,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:57:53,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:57:53,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:57:53,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:57:53,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:57:53,347 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 22:57:53,361 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:57:53,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:57:53,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:57:53,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:57:53,363 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:57:53,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:57:53,364 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:57:53,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:57:53,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:57:53,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:57:53,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:57:53,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:57:53,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:57:53,365 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:57:53,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:57:53,365 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:57:53,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:57:53,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:57:53,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:57:53,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:57:53,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:57:53,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:57:53,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:57:53,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:57:53,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:57:53,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:57:53,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:57:53,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:57:53,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:57:53,368 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 22:57:53,645 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:57:53,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:57:53,661 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:57:53,663 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:57:53,663 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:57:53,664 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label19.c [2020-07-21 22:57:53,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/740f1f5d7/08026a475adb467ea9d88187817dc9e8/FLAG2768b34ea [2020-07-21 22:57:54,277 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:57:54,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label19.c [2020-07-21 22:57:54,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/740f1f5d7/08026a475adb467ea9d88187817dc9e8/FLAG2768b34ea [2020-07-21 22:57:54,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/740f1f5d7/08026a475adb467ea9d88187817dc9e8 [2020-07-21 22:57:54,518 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:57:54,521 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:57:54,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:57:54,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:57:54,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:57:54,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:57:54" (1/1) ... [2020-07-21 22:57:54,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f41f43f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:54, skipping insertion in model container [2020-07-21 22:57:54,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:57:54" (1/1) ... [2020-07-21 22:57:54,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:57:54,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:57:54,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:57:54,979 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:57:55,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:57:55,247 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:57:55,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:55 WrapperNode [2020-07-21 22:57:55,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:57:55,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:57:55,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:57:55,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:57:55,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:55" (1/1) ... [2020-07-21 22:57:55,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:55" (1/1) ... [2020-07-21 22:57:55,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:55" (1/1) ... [2020-07-21 22:57:55,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:55" (1/1) ... [2020-07-21 22:57:55,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:55" (1/1) ... [2020-07-21 22:57:55,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:55" (1/1) ... [2020-07-21 22:57:55,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:55" (1/1) ... [2020-07-21 22:57:55,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:57:55,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:57:55,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:57:55,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:57:55,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:55" (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 22:57:55,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:57:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:57:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 22:57:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:57:55,427 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 22:57:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:57:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:57:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 22:57:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:57:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:57:55,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:57:56,674 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:57:56,674 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 22:57:56,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:57:56 BoogieIcfgContainer [2020-07-21 22:57:56,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:57:56,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:57:56,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:57:56,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:57:56,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:57:54" (1/3) ... [2020-07-21 22:57:56,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7903aacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:57:56, skipping insertion in model container [2020-07-21 22:57:56,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:55" (2/3) ... [2020-07-21 22:57:56,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7903aacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:57:56, skipping insertion in model container [2020-07-21 22:57:56,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:57:56" (3/3) ... [2020-07-21 22:57:56,689 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label19.c [2020-07-21 22:57:56,700 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:57:56,708 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:57:56,724 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:57:56,749 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:57:56,750 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:57:56,750 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:57:56,750 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:57:56,750 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:57:56,751 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:57:56,751 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:57:56,751 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:57:56,775 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 22:57:56,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-21 22:57:56,783 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:57:56,784 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] [2020-07-21 22:57:56,784 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:57:56,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:57:56,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1418549242, now seen corresponding path program 1 times [2020-07-21 22:57:56,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:57:56,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33938991] [2020-07-21 22:57:56,802 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 22:57:56,917 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:57:56,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:57:56,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 22:57:56,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:57:56,997 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 22:57:56,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:57:56,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33938991] [2020-07-21 22:57:57,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:57:57,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:57:57,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155495637] [2020-07-21 22:57:57,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:57:57,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:57:57,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:57:57,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:57:57,029 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 22:57:58,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:57:58,091 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-21 22:57:58,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:57:58,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-07-21 22:57:58,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:57:58,110 INFO L225 Difference]: With dead ends: 586 [2020-07-21 22:57:58,110 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 22:57:58,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 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 22:57:58,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 22:57:58,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 22:57:58,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 22:57:58,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 446 transitions. [2020-07-21 22:57:58,191 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 446 transitions. Word has length 35 [2020-07-21 22:57:58,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:57:58,191 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 446 transitions. [2020-07-21 22:57:58,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:57:58,192 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 446 transitions. [2020-07-21 22:57:58,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-07-21 22:57:58,197 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:57:58,197 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-21 22:57:58,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:57:58,404 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:57:58,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:57:58,405 INFO L82 PathProgramCache]: Analyzing trace with hash -945859230, now seen corresponding path program 1 times [2020-07-21 22:57:58,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:57:58,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700669014] [2020-07-21 22:57:58,407 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 22:57:58,542 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:57:58,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:57:58,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 22:57:58,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:57:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 22:57:58,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:57:58,705 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 22:57:58,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700669014] [2020-07-21 22:57:58,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 22:57:58,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-07-21 22:57:58,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414439658] [2020-07-21 22:57:58,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 22:57:58,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:57:58,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 22:57:58,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:57:58,709 INFO L87 Difference]: Start difference. First operand 294 states and 446 transitions. Second operand 4 states. [2020-07-21 22:57:59,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:57:59,458 INFO L93 Difference]: Finished difference Result 586 states and 898 transitions. [2020-07-21 22:57:59,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 22:57:59,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-07-21 22:57:59,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:57:59,465 INFO L225 Difference]: With dead ends: 586 [2020-07-21 22:57:59,465 INFO L226 Difference]: Without dead ends: 584 [2020-07-21 22:57:59,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:57:59,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-07-21 22:57:59,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 441. [2020-07-21 22:57:59,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-07-21 22:57:59,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 672 transitions. [2020-07-21 22:57:59,521 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 672 transitions. Word has length 105 [2020-07-21 22:57:59,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:57:59,522 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 672 transitions. [2020-07-21 22:57:59,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 22:57:59,522 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 672 transitions. [2020-07-21 22:57:59,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-07-21 22:57:59,529 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:57:59,531 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-21 22:57:59,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:57:59,733 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:57:59,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:57:59,734 INFO L82 PathProgramCache]: Analyzing trace with hash -969660742, now seen corresponding path program 1 times [2020-07-21 22:57:59,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:57:59,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251920571] [2020-07-21 22:57:59,736 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 22:57:59,813 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:57:59,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:57:59,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 22:57:59,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:57:59,875 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:57:59,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:57:59,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251920571] [2020-07-21 22:57:59,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:57:59,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:57:59,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68883734] [2020-07-21 22:57:59,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:57:59,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:57:59,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:57:59,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:57:59,878 INFO L87 Difference]: Start difference. First operand 441 states and 672 transitions. Second operand 5 states. [2020-07-21 22:58:00,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:00,859 INFO L93 Difference]: Finished difference Result 1178 states and 1823 transitions. [2020-07-21 22:58:00,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 22:58:00,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-07-21 22:58:00,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:00,866 INFO L225 Difference]: With dead ends: 1178 [2020-07-21 22:58:00,866 INFO L226 Difference]: Without dead ends: 743 [2020-07-21 22:58:00,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:58:00,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2020-07-21 22:58:00,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 733. [2020-07-21 22:58:00,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-07-21 22:58:00,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1019 transitions. [2020-07-21 22:58:00,902 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1019 transitions. Word has length 117 [2020-07-21 22:58:00,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:00,903 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 1019 transitions. [2020-07-21 22:58:00,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:58:00,903 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1019 transitions. [2020-07-21 22:58:00,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-07-21 22:58:00,911 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:00,912 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-07-21 22:58:01,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:01,125 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:01,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:01,125 INFO L82 PathProgramCache]: Analyzing trace with hash 839505174, now seen corresponding path program 1 times [2020-07-21 22:58:01,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:01,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931380746] [2020-07-21 22:58:01,126 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 22:58:01,270 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:58:01,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:01,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:58:01,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:01,345 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:58:01,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:58:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:58:01,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931380746] [2020-07-21 22:58:01,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:58:01,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:58:01,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059307285] [2020-07-21 22:58:01,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:58:01,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:01,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:58:01,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:58:01,484 INFO L87 Difference]: Start difference. First operand 733 states and 1019 transitions. Second operand 7 states. [2020-07-21 22:58:02,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:02,953 INFO L93 Difference]: Finished difference Result 2052 states and 3007 transitions. [2020-07-21 22:58:02,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 22:58:02,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 187 [2020-07-21 22:58:02,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:02,968 INFO L225 Difference]: With dead ends: 2052 [2020-07-21 22:58:02,968 INFO L226 Difference]: Without dead ends: 1325 [2020-07-21 22:58:02,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 369 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:58:02,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2020-07-21 22:58:03,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1321. [2020-07-21 22:58:03,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1321 states. [2020-07-21 22:58:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1886 transitions. [2020-07-21 22:58:03,034 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1886 transitions. Word has length 187 [2020-07-21 22:58:03,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:03,034 INFO L479 AbstractCegarLoop]: Abstraction has 1321 states and 1886 transitions. [2020-07-21 22:58:03,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:58:03,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1886 transitions. [2020-07-21 22:58:03,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-07-21 22:58:03,043 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:03,043 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:58:03,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:03,259 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:03,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:03,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1119643437, now seen corresponding path program 1 times [2020-07-21 22:58:03,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:03,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278783605] [2020-07-21 22:58:03,260 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 22:58:03,430 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:58:03,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:03,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 22:58:03,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-07-21 22:58:03,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:58:03,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278783605] [2020-07-21 22:58:03,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:58:03,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:58:03,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282886988] [2020-07-21 22:58:03,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:58:03,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:03,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:58:03,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:58:03,523 INFO L87 Difference]: Start difference. First operand 1321 states and 1886 transitions. Second operand 5 states. [2020-07-21 22:58:04,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:04,444 INFO L93 Difference]: Finished difference Result 2801 states and 4004 transitions. [2020-07-21 22:58:04,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:58:04,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-07-21 22:58:04,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:04,458 INFO L225 Difference]: With dead ends: 2801 [2020-07-21 22:58:04,458 INFO L226 Difference]: Without dead ends: 1486 [2020-07-21 22:58:04,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:58:04,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2020-07-21 22:58:04,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1472. [2020-07-21 22:58:04,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-07-21 22:58:04,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2067 transitions. [2020-07-21 22:58:04,548 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2067 transitions. Word has length 204 [2020-07-21 22:58:04,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:04,549 INFO L479 AbstractCegarLoop]: Abstraction has 1472 states and 2067 transitions. [2020-07-21 22:58:04,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:58:04,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2067 transitions. [2020-07-21 22:58:04,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-07-21 22:58:04,554 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:04,554 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-07-21 22:58:04,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:04,770 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:04,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:04,771 INFO L82 PathProgramCache]: Analyzing trace with hash -109434435, now seen corresponding path program 1 times [2020-07-21 22:58:04,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:04,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747467671] [2020-07-21 22:58:04,772 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 22:58:04,856 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:58:04,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:04,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 22:58:04,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:04,920 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-07-21 22:58:04,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:58:04,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747467671] [2020-07-21 22:58:04,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:58:04,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:58:04,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656098204] [2020-07-21 22:58:04,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:58:04,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:04,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:58:04,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:58:04,923 INFO L87 Difference]: Start difference. First operand 1472 states and 2067 transitions. Second operand 5 states. [2020-07-21 22:58:05,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:05,851 INFO L93 Difference]: Finished difference Result 3127 states and 4601 transitions. [2020-07-21 22:58:05,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:58:05,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2020-07-21 22:58:05,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:05,864 INFO L225 Difference]: With dead ends: 3127 [2020-07-21 22:58:05,864 INFO L226 Difference]: Without dead ends: 1804 [2020-07-21 22:58:05,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:58:05,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2020-07-21 22:58:05,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1774. [2020-07-21 22:58:05,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1774 states. [2020-07-21 22:58:05,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2244 transitions. [2020-07-21 22:58:05,970 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2244 transitions. Word has length 212 [2020-07-21 22:58:05,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:05,970 INFO L479 AbstractCegarLoop]: Abstraction has 1774 states and 2244 transitions. [2020-07-21 22:58:05,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:58:05,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2244 transitions. [2020-07-21 22:58:05,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-07-21 22:58:05,976 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:05,976 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-07-21 22:58:06,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:06,191 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:06,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:06,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1047580335, now seen corresponding path program 1 times [2020-07-21 22:58:06,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:06,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596691665] [2020-07-21 22:58:06,194 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 22:58:06,377 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:58:06,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:06,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:58:06,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:06,420 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 22:58:06,420 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:58:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-07-21 22:58:06,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:58:06,642 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:06,643 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:06,648 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 22:58:06,649 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:06,872 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 156 proven. 82 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-07-21 22:58:06,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596691665] [2020-07-21 22:58:06,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:58:06,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 22:58:06,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270738961] [2020-07-21 22:58:06,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 22:58:06,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:06,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 22:58:06,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:58:06,875 INFO L87 Difference]: Start difference. First operand 1774 states and 2244 transitions. Second operand 6 states. [2020-07-21 22:58:07,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:07,956 INFO L93 Difference]: Finished difference Result 3868 states and 5038 transitions. [2020-07-21 22:58:07,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 22:58:07,962 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 274 [2020-07-21 22:58:07,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:07,975 INFO L225 Difference]: With dead ends: 3868 [2020-07-21 22:58:07,975 INFO L226 Difference]: Without dead ends: 2243 [2020-07-21 22:58:07,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 544 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 22:58:07,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2020-07-21 22:58:08,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 1639. [2020-07-21 22:58:08,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1639 states. [2020-07-21 22:58:08,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 1931 transitions. [2020-07-21 22:58:08,033 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 1931 transitions. Word has length 274 [2020-07-21 22:58:08,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:08,033 INFO L479 AbstractCegarLoop]: Abstraction has 1639 states and 1931 transitions. [2020-07-21 22:58:08,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 22:58:08,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 1931 transitions. [2020-07-21 22:58:08,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-07-21 22:58:08,039 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:08,040 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:58:08,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:08,254 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:08,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:08,255 INFO L82 PathProgramCache]: Analyzing trace with hash 159388138, now seen corresponding path program 1 times [2020-07-21 22:58:08,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:08,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453875246] [2020-07-21 22:58:08,257 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 22:58:08,362 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:58:08,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:08,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-21 22:58:08,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:08,599 INFO L501 QuantifierPusher]: Distributing 6 conjuncts over 3 disjuncts [2020-07-21 22:58:08,599 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:58:08,600 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:58:08,602 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:58:08,602 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:58:08,603 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:58:08,605 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:58:08,605 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:58:08,872 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 293 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-07-21 22:58:08,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:58:09,175 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 22:58:09,176 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:58:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 165 proven. 82 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-07-21 22:58:09,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453875246] [2020-07-21 22:58:09,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:58:09,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2020-07-21 22:58:09,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060461669] [2020-07-21 22:58:09,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-21 22:58:09,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:09,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-21 22:58:09,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-07-21 22:58:09,437 INFO L87 Difference]: Start difference. First operand 1639 states and 1931 transitions. Second operand 15 states. [2020-07-21 22:58:10,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:58:10,952 INFO L93 Difference]: Finished difference Result 3335 states and 4018 transitions. [2020-07-21 22:58:10,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 22:58:10,953 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 283 [2020-07-21 22:58:10,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:58:10,961 INFO L225 Difference]: With dead ends: 3335 [2020-07-21 22:58:10,962 INFO L226 Difference]: Without dead ends: 1786 [2020-07-21 22:58:10,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-07-21 22:58:10,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2020-07-21 22:58:11,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1641. [2020-07-21 22:58:11,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1641 states. [2020-07-21 22:58:11,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 1928 transitions. [2020-07-21 22:58:11,008 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 1928 transitions. Word has length 283 [2020-07-21 22:58:11,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:58:11,009 INFO L479 AbstractCegarLoop]: Abstraction has 1641 states and 1928 transitions. [2020-07-21 22:58:11,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-21 22:58:11,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 1928 transitions. [2020-07-21 22:58:11,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-07-21 22:58:11,016 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:58:11,016 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 22:58:11,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:58:11,231 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:58:11,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:58:11,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1577155938, now seen corresponding path program 1 times [2020-07-21 22:58:11,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:58:11,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210117643] [2020-07-21 22:58:11,233 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 22:58:11,374 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:58:11,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:58:11,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 22:58:11,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:58:11,433 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:58:11,435 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:58:11,437 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:58:11,446 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:58:11,449 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:58:11,451 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:58:11,457 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:58:11,459 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:58:32,105 WARN L193 SmtUtils]: Spent 20.60 s on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-07-21 22:58:32,141 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:58:32,263 INFO L501 QuantifierPusher]: Distributing 6 conjuncts over 2 disjuncts [2020-07-21 22:58:32,565 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 302 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-07-21 22:58:32,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:58:32,659 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 22:58:32,835 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:32,836 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:32,837 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:32,837 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:32,839 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:32,840 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:32,841 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:32,842 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:58:32,844 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:58:32,845 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:32,846 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:32,846 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:58:32,848 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:58:32,849 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:58:32,851 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:32,852 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:32,852 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:32,853 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:32,855 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:32,856 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:32,857 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:32,858 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:58:32,860 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:32,861 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:32,861 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:32,862 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:32,863 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:32,865 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:32,866 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:58:32,866 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:58:39,793 WARN L193 SmtUtils]: Spent 6.83 s on a formula simplification. DAG size of input: 67 DAG size of output: 25 [2020-07-21 22:58:39,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210117643] [2020-07-21 22:58:39,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 22:58:39,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-21 22:58:39,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142671331] [2020-07-21 22:58:39,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 22:58:39,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:39,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 22:58:39,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-07-21 22:58:39,797 INFO L87 Difference]: Start difference. First operand 1641 states and 1928 transitions. Second operand 9 states. [2020-07-21 23:00:45,911 WARN L193 SmtUtils]: Spent 20.60 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2020-07-21 23:00:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:00:49,945 INFO L93 Difference]: Finished difference Result 4476 states and 5509 transitions. [2020-07-21 23:00:49,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-21 23:00:49,947 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 319 [2020-07-21 23:00:49,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:00:49,959 INFO L225 Difference]: With dead ends: 4476 [2020-07-21 23:00:49,960 INFO L226 Difference]: Without dead ends: 2984 [2020-07-21 23:00:49,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 505 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 51.5s TimeCoverageRelationStatistics Valid=223, Invalid=532, Unknown=1, NotChecked=0, Total=756 [2020-07-21 23:00:49,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2020-07-21 23:00:50,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 2674. [2020-07-21 23:00:50,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2674 states. [2020-07-21 23:00:50,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 3228 transitions. [2020-07-21 23:00:50,038 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 3228 transitions. Word has length 319 [2020-07-21 23:00:50,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:00:50,039 INFO L479 AbstractCegarLoop]: Abstraction has 2674 states and 3228 transitions. [2020-07-21 23:00:50,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 23:00:50,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 3228 transitions. [2020-07-21 23:00:50,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-07-21 23:00:50,048 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:00:50,049 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 23:00:50,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:50,265 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:00:50,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:00:50,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1986389201, now seen corresponding path program 1 times [2020-07-21 23:00:50,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:00:50,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163502109] [2020-07-21 23:00:50,266 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 23:00:50,651 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:00:50,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:00:50,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:00:50,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:00:50,747 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-07-21 23:00:50,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:00:50,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163502109] [2020-07-21 23:00:50,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:00:50,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:00:50,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379949256] [2020-07-21 23:00:50,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:00:50,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:00:50,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:00:50,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:00:50,750 INFO L87 Difference]: Start difference. First operand 2674 states and 3228 transitions. Second operand 3 states. [2020-07-21 23:00:51,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:00:51,690 INFO L93 Difference]: Finished difference Result 5199 states and 6301 transitions. [2020-07-21 23:00:51,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:00:51,691 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 338 [2020-07-21 23:00:51,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:00:51,701 INFO L225 Difference]: With dead ends: 5199 [2020-07-21 23:00:51,701 INFO L226 Difference]: Without dead ends: 2674 [2020-07-21 23:00:51,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 336 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 23:00:51,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2020-07-21 23:00:51,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2529. [2020-07-21 23:00:51,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2529 states. [2020-07-21 23:00:51,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 2988 transitions. [2020-07-21 23:00:51,774 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 2988 transitions. Word has length 338 [2020-07-21 23:00:51,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:00:51,774 INFO L479 AbstractCegarLoop]: Abstraction has 2529 states and 2988 transitions. [2020-07-21 23:00:51,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:00:51,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 2988 transitions. [2020-07-21 23:00:51,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-07-21 23:00:51,781 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:00:51,782 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2020-07-21 23:00:51,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:51,986 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:00:51,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:00:51,987 INFO L82 PathProgramCache]: Analyzing trace with hash -583400554, now seen corresponding path program 1 times [2020-07-21 23:00:51,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:00:51,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824536525] [2020-07-21 23:00:51,987 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:52,187 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:00:52,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:00:52,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:00:52,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:00:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-07-21 23:00:52,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:00:52,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824536525] [2020-07-21 23:00:52,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:00:52,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:00:52,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068288577] [2020-07-21 23:00:52,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:00:52,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:00:52,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:00:52,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:00:52,282 INFO L87 Difference]: Start difference. First operand 2529 states and 2988 transitions. Second operand 3 states. [2020-07-21 23:00:53,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:00:53,220 INFO L93 Difference]: Finished difference Result 5195 states and 6182 transitions. [2020-07-21 23:00:53,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:00:53,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 361 [2020-07-21 23:00:53,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:00:53,230 INFO L225 Difference]: With dead ends: 5195 [2020-07-21 23:00:53,230 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 23:00:53,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 359 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 23:00:53,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 23:00:53,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 23:00:53,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 23:00:53,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 23:00:53,239 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 361 [2020-07-21 23:00:53,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:00:53,239 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 23:00:53,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:00:53,240 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 23:00:53,240 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 23:00:53,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:53,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 23:00:53,944 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 146 [2020-07-21 23:00:54,063 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 146 [2020-07-21 23:00:55,000 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 45 [2020-07-21 23:00:55,635 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 37 [2020-07-21 23:00:56,160 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 37 [2020-07-21 23:00:56,165 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:00:56,165 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (or (< 7 ~a19~0) (< |old(~a19~0)| 8)) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)) [2020-07-21 23:00:56,165 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:00:56,165 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 23:00:56,166 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,166 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,166 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,166 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,166 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,166 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,166 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 23:00:56,166 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 23:00:56,167 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 23:00:56,167 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 23:00:56,167 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 23:00:56,167 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 23:00:56,167 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 23:00:56,167 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 23:00:56,167 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 23:00:56,167 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 23:00:56,168 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 23:00:56,168 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,168 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,168 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,168 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,168 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,168 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 23:00:56,168 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 23:00:56,169 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 23:00:56,169 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 23:00:56,169 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 23:00:56,169 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 23:00:56,169 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 23:00:56,169 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 23:00:56,169 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 23:00:56,169 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 23:00:56,169 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 23:00:56,170 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 23:00:56,170 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 23:00:56,170 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2020-07-21 23:00:56,170 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 23:00:56,170 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,170 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,170 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,171 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,171 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,171 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 23:00:56,171 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 23:00:56,171 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 23:00:56,171 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 23:00:56,171 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 23:00:56,171 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 23:00:56,172 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 23:00:56,172 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 23:00:56,172 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 23:00:56,172 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 23:00:56,172 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,172 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,172 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,172 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,172 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,173 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 23:00:56,173 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 23:00:56,173 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 23:00:56,173 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 23:00:56,173 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 23:00:56,173 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 23:00:56,173 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 23:00:56,173 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 23:00:56,174 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 23:00:56,174 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 23:00:56,174 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 23:00:56,174 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 23:00:56,174 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 23:00:56,174 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,174 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,174 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,175 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,175 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,175 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 23:00:56,175 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 23:00:56,175 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 23:00:56,175 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 23:00:56,175 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 23:00:56,175 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 23:00:56,176 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 23:00:56,176 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 23:00:56,176 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 23:00:56,176 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,176 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,176 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,176 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,176 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,176 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,177 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,177 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 23:00:56,177 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 23:00:56,177 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 23:00:56,177 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 23:00:56,177 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 23:00:56,177 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 23:00:56,177 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 23:00:56,178 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 23:00:56,178 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 23:00:56,178 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 23:00:56,178 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 23:00:56,178 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 23:00:56,178 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 23:00:56,178 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,178 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,179 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,179 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,179 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 23:00:56,179 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,179 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,179 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 23:00:56,179 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 23:00:56,179 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 23:00:56,180 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 23:00:56,180 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 23:00:56,180 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 23:00:56,180 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 23:00:56,180 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 23:00:56,180 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 23:00:56,180 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 23:00:56,180 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 23:00:56,181 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 23:00:56,181 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 23:00:56,181 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,181 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,181 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,181 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,181 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,181 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,181 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 23:00:56,182 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 23:00:56,182 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 23:00:56,182 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 23:00:56,182 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 23:00:56,182 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 23:00:56,182 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 23:00:56,182 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 23:00:56,182 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 23:00:56,182 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 23:00:56,183 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 23:00:56,183 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse0 (not (= 0 ~a12~0))) (.cse1 (not (= 14 ~a4~0))) (.cse2 (and (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|))) (.cse3 (not (<= |old(~a10~0)| 2)))) (and (or (not (< 7 |old(~a19~0)|)) .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 (not (<= |old(~a19~0)| 9)) .cse2 (not (<= 2 |old(~a10~0)|))) (or (not (<= |old(~a19~0)| 6)) .cse0 .cse1 .cse2) (or (not (<= 1 |old(~a10~0)|)) .cse0 .cse1 .cse2 .cse3))) [2020-07-21 23:00:56,183 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 23:00:56,183 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 23:00:56,183 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 23:00:56,183 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,184 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,184 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,184 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,184 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,184 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,184 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 23:00:56,184 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 23:00:56,184 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 23:00:56,184 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 23:00:56,185 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 23:00:56,185 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 23:00:56,185 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 23:00:56,185 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 23:00:56,185 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 23:00:56,185 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 23:00:56,185 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 23:00:56,185 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 23:00:56,185 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 23:00:56,186 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,186 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,186 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,186 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,186 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,186 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,186 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 23:00:56,186 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 23:00:56,186 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 23:00:56,186 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 23:00:56,187 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 23:00:56,187 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 23:00:56,187 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 23:00:56,187 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 23:00:56,187 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 23:00:56,187 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 23:00:56,187 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 23:00:56,187 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 23:00:56,187 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,188 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,188 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,188 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,188 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,188 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:56,188 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 23:00:56,188 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 23:00:56,188 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 23:00:56,188 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 23:00:56,189 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 23:00:56,189 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 23:00:56,189 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 23:00:56,189 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 23:00:56,189 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 23:00:56,189 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 23:00:56,189 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 23:00:56,189 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 23:00:56,189 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:00:56,190 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (= 14 ~a4~0) (<= ~a19~0 9) (= 0 ~a12~0) (< 7 ~a19~0) (= 23 ~a1~0)) [2020-07-21 23:00:56,190 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:00:56,190 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:00:56,190 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (not (<= |old(~a10~0)| 0)) (not (= 0 ~a12~0)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|))) [2020-07-21 23:00:56,190 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 23:00:56,190 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (<= ~a10~0 2))) (or (and (<= 1 ~a10~0) .cse0) (<= ~a19~0 6) (not (<= |old(~a10~0)| 0)) (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (not (= 0 ~a12~0)) (and .cse0 (< 7 ~a19~0)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a19~0 9) (<= 2 ~a10~0)))) [2020-07-21 23:00:56,190 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 23:00:56,191 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 23:00:56,191 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (<= ~a10~0 2))) (or (and (<= 1 ~a10~0) .cse0) (<= ~a19~0 6) (not (<= |old(~a10~0)| 0)) (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (not (= 0 ~a12~0)) (and .cse0 (< 7 ~a19~0)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a19~0 9) (<= 2 ~a10~0)))) [2020-07-21 23:00:56,191 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 23:00:56,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:00:56 BoogieIcfgContainer [2020-07-21 23:00:56,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 23:00:56,213 INFO L168 Benchmark]: Toolchain (without parser) took 181693.54 ms. Allocated memory was 138.9 MB in the beginning and 551.0 MB in the end (delta: 412.1 MB). Free memory was 101.6 MB in the beginning and 118.7 MB in the end (delta: -17.1 MB). Peak memory consumption was 395.0 MB. Max. memory is 7.1 GB. [2020-07-21 23:00:56,214 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 23:00:56,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.85 ms. Allocated memory was 138.9 MB in the beginning and 206.6 MB in the end (delta: 67.6 MB). Free memory was 101.4 MB in the beginning and 173.2 MB in the end (delta: -71.8 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2020-07-21 23:00:56,216 INFO L168 Benchmark]: Boogie Preprocessor took 103.21 ms. Allocated memory is still 206.6 MB. Free memory was 173.2 MB in the beginning and 168.2 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-07-21 23:00:56,216 INFO L168 Benchmark]: RCFGBuilder took 1329.37 ms. Allocated memory was 206.6 MB in the beginning and 239.6 MB in the end (delta: 33.0 MB). Free memory was 168.2 MB in the beginning and 183.4 MB in the end (delta: -15.2 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-07-21 23:00:56,217 INFO L168 Benchmark]: TraceAbstraction took 179529.35 ms. Allocated memory was 239.6 MB in the beginning and 551.0 MB in the end (delta: 311.4 MB). Free memory was 183.4 MB in the beginning and 118.7 MB in the end (delta: 64.8 MB). Peak memory consumption was 376.2 MB. Max. memory is 7.1 GB. [2020-07-21 23:00:56,220 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 724.85 ms. Allocated memory was 138.9 MB in the beginning and 206.6 MB in the end (delta: 67.6 MB). Free memory was 101.4 MB in the beginning and 173.2 MB in the end (delta: -71.8 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.21 ms. Allocated memory is still 206.6 MB. Free memory was 173.2 MB in the beginning and 168.2 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1329.37 ms. Allocated memory was 206.6 MB in the beginning and 239.6 MB in the end (delta: 33.0 MB). Free memory was 168.2 MB in the beginning and 183.4 MB in the end (delta: -15.2 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 179529.35 ms. Allocated memory was 239.6 MB in the beginning and 551.0 MB in the end (delta: 311.4 MB). Free memory was 183.4 MB in the beginning and 118.7 MB in the end (delta: 64.8 MB). Peak memory consumption was 376.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: 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: 582]: Loop Invariant Derived loop invariant: (((((((((1 <= a10 && a10 <= 2) || a19 <= 6) || !(\old(a10) <= 0)) || !(7 < \old(a19))) || !(23 == \old(a1))) || !(0 == a12)) || (a10 <= 2 && 7 < a19)) || !(14 == a4)) || !(\old(a19) <= 9)) || (a19 <= 9 && 2 <= a10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 176.7s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 140.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 607 SDtfs, 4059 SDslu, 334 SDs, 0 SdLazy, 7712 SolverSat, 1838 SolverUnsat, 45 SolverUnknown, 0 SolverNotchecked, 112.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3517 GetRequests, 3427 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 52.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2674occurred in iteration=9, 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, 11 MinimizatonAttempts, 1405 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 117 PreInvPairs, 157 NumberOfFragments, 293 HoareAnnotationTreeSize, 117 FomulaSimplifications, 10500 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 7 FomulaSimplificationsInter, 7613 FormulaSimplificationTreeSizeReductionInter, 2.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 30.8s InterpolantComputationTime, 2435 NumberOfCodeBlocks, 1913 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 3269 ConstructedInterpolants, 6 QuantifiedInterpolants, 3530685 SizeOfPredicates, 24 NumberOfNonLiveVariables, 3572 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 2710/2911 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...