/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_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:28:34,808 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 01:28:34,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:28:34,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:28:34,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:28:34,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:28:34,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:28:34,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:28:34,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:28:34,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:28:34,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:28:34,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:28:34,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:28:34,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:28:34,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:28:34,894 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 01:28:34,918 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:28:34,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:28:34,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:28:34,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:28:34,921 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:28:34,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:28:34,922 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:28:34,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:28:34,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:28:34,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:28:34,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:28:34,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:28:34,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:28:34,924 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:28:34,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:28:34,925 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:28:34,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:28:34,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:28:34,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:28:34,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:28:34,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:28:34,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:28:34,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:28:34,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:28:34,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:28:34,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:28:34,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:34,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:28:34,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:28:34,928 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 01:28:35,260 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:28:35,273 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:28:35,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:28:35,278 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:28:35,279 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:28:35,279 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-07-21 01:28:35,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0d671a4/cf64f5ade9a349cc93f37eb71f7bfc97/FLAGd295eb309 [2020-07-21 01:28:35,882 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:28:35,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-07-21 01:28:35,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0d671a4/cf64f5ade9a349cc93f37eb71f7bfc97/FLAGd295eb309 [2020-07-21 01:28:36,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0d671a4/cf64f5ade9a349cc93f37eb71f7bfc97 [2020-07-21 01:28:36,191 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:28:36,194 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:28:36,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:28:36,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:28:36,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:28:36,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:28:36" (1/1) ... [2020-07-21 01:28:36,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab178b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:28:36, skipping insertion in model container [2020-07-21 01:28:36,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:28:36" (1/1) ... [2020-07-21 01:28:36,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:28:36,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:28:36,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:28:36,758 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:28:36,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:28:36,962 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:28:36,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:28:36 WrapperNode [2020-07-21 01:28:36,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:28:36,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:28:36,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:28:36,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:28:36,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:28:36" (1/1) ... [2020-07-21 01:28:36,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:28:36" (1/1) ... [2020-07-21 01:28:36,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:28:36" (1/1) ... [2020-07-21 01:28:36,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:28:36" (1/1) ... [2020-07-21 01:28:37,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:28:36" (1/1) ... [2020-07-21 01:28:37,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:28:36" (1/1) ... [2020-07-21 01:28:37,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:28:36" (1/1) ... [2020-07-21 01:28:37,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:28:37,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:28:37,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:28:37,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:28:37,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:28:36" (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 01:28:37,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:28:37,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:28:37,118 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 01:28:37,118 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:28:37,118 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 01:28:37,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:28:37,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:28:37,118 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:28:37,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:28:37,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:28:37,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:28:38,393 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:28:38,394 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:28:38,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:28:38 BoogieIcfgContainer [2020-07-21 01:28:38,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:28:38,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:28:38,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:28:38,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:28:38,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:28:36" (1/3) ... [2020-07-21 01:28:38,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45dae851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:28:38, skipping insertion in model container [2020-07-21 01:28:38,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:28:36" (2/3) ... [2020-07-21 01:28:38,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45dae851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:28:38, skipping insertion in model container [2020-07-21 01:28:38,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:28:38" (3/3) ... [2020-07-21 01:28:38,417 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label36.c [2020-07-21 01:28:38,429 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:28:38,441 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:28:38,456 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:28:38,491 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:28:38,493 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:28:38,493 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:28:38,493 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:28:38,494 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:28:38,494 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:28:38,494 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:28:38,494 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:28:38,520 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 01:28:38,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-21 01:28:38,533 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:28:38,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:28:38,534 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:28:38,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:28:38,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1093393358, now seen corresponding path program 1 times [2020-07-21 01:28:38,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:28:38,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538106511] [2020-07-21 01:28:38,551 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 01:28:38,711 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:28:38,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:28:38,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:28:38,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:28:38,790 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 01:28:38,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:28:38,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538106511] [2020-07-21 01:28:38,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:28:38,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:28:38,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285834503] [2020-07-21 01:28:38,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:28:38,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:28:38,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:28:38,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:28:38,816 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 01:28:39,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:28:39,821 INFO L93 Difference]: Finished difference Result 571 states and 989 transitions. [2020-07-21 01:28:39,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:28:39,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-07-21 01:28:39,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:28:39,839 INFO L225 Difference]: With dead ends: 571 [2020-07-21 01:28:39,840 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 01:28:39,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 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 01:28:39,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 01:28:39,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 01:28:39,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 01:28:39,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 391 transitions. [2020-07-21 01:28:39,924 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 391 transitions. Word has length 45 [2020-07-21 01:28:39,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:28:39,925 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 391 transitions. [2020-07-21 01:28:39,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:28:39,926 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 391 transitions. [2020-07-21 01:28:39,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-07-21 01:28:39,933 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:28:39,934 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, 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] [2020-07-21 01:28:40,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:40,150 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:28:40,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:28:40,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1074039414, now seen corresponding path program 1 times [2020-07-21 01:28:40,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:28:40,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91874925] [2020-07-21 01:28:40,153 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 01:28:40,269 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:28:40,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:28:40,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 01:28:40,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:28:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 01:28:40,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:28:40,430 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 01:28:40,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91874925] [2020-07-21 01:28:40,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:28:40,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-07-21 01:28:40,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256320979] [2020-07-21 01:28:40,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 01:28:40,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:28:40,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 01:28:40,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:28:40,434 INFO L87 Difference]: Start difference. First operand 294 states and 391 transitions. Second operand 4 states. [2020-07-21 01:28:41,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:28:41,213 INFO L93 Difference]: Finished difference Result 586 states and 786 transitions. [2020-07-21 01:28:41,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 01:28:41,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-07-21 01:28:41,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:28:41,219 INFO L225 Difference]: With dead ends: 586 [2020-07-21 01:28:41,219 INFO L226 Difference]: Without dead ends: 584 [2020-07-21 01:28:41,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 225 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 01:28:41,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-07-21 01:28:41,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2020-07-21 01:28:41,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-07-21 01:28:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 784 transitions. [2020-07-21 01:28:41,264 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 784 transitions. Word has length 115 [2020-07-21 01:28:41,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:28:41,265 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 784 transitions. [2020-07-21 01:28:41,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 01:28:41,265 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 784 transitions. [2020-07-21 01:28:41,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-21 01:28:41,269 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:28:41,269 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:28:41,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:41,485 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:28:41,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:28:41,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1396859214, now seen corresponding path program 1 times [2020-07-21 01:28:41,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:28:41,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881102179] [2020-07-21 01:28:41,488 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 01:28:41,589 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:28:41,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:28:41,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:28:41,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:28:41,673 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:28:41,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:28:41,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881102179] [2020-07-21 01:28:41,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:28:41,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:28:41,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209246235] [2020-07-21 01:28:41,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:28:41,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:28:41,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:28:41,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:28:41,676 INFO L87 Difference]: Start difference. First operand 584 states and 784 transitions. Second operand 5 states. [2020-07-21 01:28:42,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:28:42,614 INFO L93 Difference]: Finished difference Result 1472 states and 2014 transitions. [2020-07-21 01:28:42,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:28:42,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-07-21 01:28:42,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:28:42,630 INFO L225 Difference]: With dead ends: 1472 [2020-07-21 01:28:42,631 INFO L226 Difference]: Without dead ends: 894 [2020-07-21 01:28:42,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 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 01:28:42,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-07-21 01:28:42,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 880. [2020-07-21 01:28:42,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-07-21 01:28:42,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1114 transitions. [2020-07-21 01:28:42,689 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1114 transitions. Word has length 167 [2020-07-21 01:28:42,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:28:42,690 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 1114 transitions. [2020-07-21 01:28:42,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:28:42,690 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1114 transitions. [2020-07-21 01:28:42,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-07-21 01:28:42,695 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:28:42,696 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, 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, 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 01:28:42,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:42,920 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:28:42,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:28:42,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1971868770, now seen corresponding path program 1 times [2020-07-21 01:28:42,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:28:42,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765629846] [2020-07-21 01:28:42,922 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 01:28:43,053 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:28:43,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:28:43,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:28:43,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:28:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:28:43,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:28:43,237 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:28:43,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765629846] [2020-07-21 01:28:43,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:28:43,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:28:43,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758297047] [2020-07-21 01:28:43,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:28:43,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:28:43,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:28:43,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:28:43,241 INFO L87 Difference]: Start difference. First operand 880 states and 1114 transitions. Second operand 7 states. [2020-07-21 01:28:44,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:28:44,735 INFO L93 Difference]: Finished difference Result 2352 states and 3091 transitions. [2020-07-21 01:28:44,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 01:28:44,736 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-07-21 01:28:44,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:28:44,745 INFO L225 Difference]: With dead ends: 2352 [2020-07-21 01:28:44,745 INFO L226 Difference]: Without dead ends: 1478 [2020-07-21 01:28:44,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 389 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:28:44,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2020-07-21 01:28:44,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1474. [2020-07-21 01:28:44,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2020-07-21 01:28:44,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 1880 transitions. [2020-07-21 01:28:44,799 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 1880 transitions. Word has length 197 [2020-07-21 01:28:44,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:28:44,800 INFO L479 AbstractCegarLoop]: Abstraction has 1474 states and 1880 transitions. [2020-07-21 01:28:44,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:28:44,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 1880 transitions. [2020-07-21 01:28:44,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-07-21 01:28:44,807 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:28:44,808 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:28:45,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:45,022 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:28:45,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:28:45,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1185672241, now seen corresponding path program 1 times [2020-07-21 01:28:45,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:28:45,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231303522] [2020-07-21 01:28:45,024 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 01:28:45,168 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:28:45,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:28:45,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:28:45,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:28:45,268 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-07-21 01:28:45,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:28:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 186 proven. 72 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-07-21 01:28:45,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231303522] [2020-07-21 01:28:45,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:28:45,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:28:45,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151512852] [2020-07-21 01:28:45,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:28:45,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:28:45,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:28:45,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:28:45,409 INFO L87 Difference]: Start difference. First operand 1474 states and 1880 transitions. Second operand 7 states. [2020-07-21 01:28:47,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:28:47,073 INFO L93 Difference]: Finished difference Result 3967 states and 5108 transitions. [2020-07-21 01:28:47,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:28:47,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 312 [2020-07-21 01:28:47,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:28:47,085 INFO L225 Difference]: With dead ends: 3967 [2020-07-21 01:28:47,085 INFO L226 Difference]: Without dead ends: 2499 [2020-07-21 01:28:47,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 619 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:28:47,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2020-07-21 01:28:47,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 2350. [2020-07-21 01:28:47,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2350 states. [2020-07-21 01:28:47,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 2834 transitions. [2020-07-21 01:28:47,158 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 2834 transitions. Word has length 312 [2020-07-21 01:28:47,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:28:47,158 INFO L479 AbstractCegarLoop]: Abstraction has 2350 states and 2834 transitions. [2020-07-21 01:28:47,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:28:47,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 2834 transitions. [2020-07-21 01:28:47,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-07-21 01:28:47,167 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:28:47,168 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, 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, 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] [2020-07-21 01:28:47,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:47,384 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:28:47,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:28:47,385 INFO L82 PathProgramCache]: Analyzing trace with hash -346067766, now seen corresponding path program 1 times [2020-07-21 01:28:47,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:28:47,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590769717] [2020-07-21 01:28:47,385 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 01:28:47,489 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:28:47,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:28:47,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:28:47,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:28:47,574 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-07-21 01:28:47,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:28:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 188 proven. 72 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-07-21 01:28:47,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590769717] [2020-07-21 01:28:47,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:28:47,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 01:28:47,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477175979] [2020-07-21 01:28:47,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 01:28:47,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:28:47,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 01:28:47,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:28:47,769 INFO L87 Difference]: Start difference. First operand 2350 states and 2834 transitions. Second operand 6 states. [2020-07-21 01:28:48,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:28:48,883 INFO L93 Difference]: Finished difference Result 5459 states and 6654 transitions. [2020-07-21 01:28:48,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:28:48,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 321 [2020-07-21 01:28:48,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:28:48,895 INFO L225 Difference]: With dead ends: 5459 [2020-07-21 01:28:48,895 INFO L226 Difference]: Without dead ends: 1802 [2020-07-21 01:28:48,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 638 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:28:48,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2020-07-21 01:28:48,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1772. [2020-07-21 01:28:48,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1772 states. [2020-07-21 01:28:48,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2066 transitions. [2020-07-21 01:28:48,968 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2066 transitions. Word has length 321 [2020-07-21 01:28:48,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:28:48,969 INFO L479 AbstractCegarLoop]: Abstraction has 1772 states and 2066 transitions. [2020-07-21 01:28:48,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 01:28:48,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2066 transitions. [2020-07-21 01:28:48,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-07-21 01:28:48,980 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:28:48,980 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, 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, 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] [2020-07-21 01:28:49,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:49,197 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:28:49,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:28:49,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1830531518, now seen corresponding path program 1 times [2020-07-21 01:28:49,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:28:49,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410448026] [2020-07-21 01:28:49,199 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 01:28:49,381 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:28:49,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:28:49,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:28:49,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:28:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 302 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-07-21 01:28:49,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:28:49,670 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 302 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-07-21 01:28:49,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410448026] [2020-07-21 01:28:49,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:28:49,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 01:28:49,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199217182] [2020-07-21 01:28:49,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 01:28:49,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:28:49,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 01:28:49,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:28:49,672 INFO L87 Difference]: Start difference. First operand 1772 states and 2066 transitions. Second operand 6 states. [2020-07-21 01:28:50,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:28:50,803 INFO L93 Difference]: Finished difference Result 4762 states and 5821 transitions. [2020-07-21 01:28:50,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 01:28:50,803 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 357 [2020-07-21 01:28:50,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:28:50,820 INFO L225 Difference]: With dead ends: 4762 [2020-07-21 01:28:50,820 INFO L226 Difference]: Without dead ends: 3000 [2020-07-21 01:28:50,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 711 SyntacticMatches, 1 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 01:28:50,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2020-07-21 01:28:50,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2799. [2020-07-21 01:28:50,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2799 states. [2020-07-21 01:28:50,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 3246 transitions. [2020-07-21 01:28:50,924 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 3246 transitions. Word has length 357 [2020-07-21 01:28:50,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:28:50,925 INFO L479 AbstractCegarLoop]: Abstraction has 2799 states and 3246 transitions. [2020-07-21 01:28:50,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 01:28:50,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 3246 transitions. [2020-07-21 01:28:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-07-21 01:28:50,936 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:28:50,936 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, 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, 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] [2020-07-21 01:28:51,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:51,151 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:28:51,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:28:51,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1499776183, now seen corresponding path program 1 times [2020-07-21 01:28:51,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:28:51,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415842552] [2020-07-21 01:28:51,153 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 01:28:51,360 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:28:51,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:28:51,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:28:51,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:28:51,506 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-07-21 01:28:51,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:28:51,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415842552] [2020-07-21 01:28:51,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:28:51,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:28:51,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789844809] [2020-07-21 01:28:51,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:28:51,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:28:51,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:28:51,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:28:51,508 INFO L87 Difference]: Start difference. First operand 2799 states and 3246 transitions. Second operand 3 states. [2020-07-21 01:28:52,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:28:52,033 INFO L93 Difference]: Finished difference Result 2799 states and 3246 transitions. [2020-07-21 01:28:52,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:28:52,033 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 370 [2020-07-21 01:28:52,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:28:52,034 INFO L225 Difference]: With dead ends: 2799 [2020-07-21 01:28:52,035 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:28:52,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 368 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 01:28:52,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:28:52,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:28:52,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:28:52,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:28:52,041 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 370 [2020-07-21 01:28:52,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:28:52,041 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:28:52,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:28:52,042 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:28:52,042 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:28:52,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:52,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:28:53,183 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 47 [2020-07-21 01:28:53,507 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 36 [2020-07-21 01:28:53,778 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 36 [2020-07-21 01:28:53,782 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:28:53,783 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) (<= |old(~a1~0)| ~a1~0) (<= ~a19~0 |old(~a19~0)|)) [2020-07-21 01:28:53,783 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:28:53,783 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 01:28:53,783 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,783 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,783 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,784 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,784 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,784 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,784 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 01:28:53,784 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 01:28:53,785 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 01:28:53,785 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 01:28:53,785 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 01:28:53,785 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 01:28:53,785 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 01:28:53,786 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 01:28:53,786 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 01:28:53,786 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 01:28:53,786 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 01:28:53,786 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,786 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,787 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,787 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,787 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,787 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 01:28:53,787 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 01:28:53,787 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 01:28:53,787 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 01:28:53,788 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 01:28:53,788 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 01:28:53,788 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 01:28:53,788 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 01:28:53,788 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 01:28:53,788 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 01:28:53,788 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 01:28:53,788 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 01:28:53,788 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 01:28:53,789 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 121) no Hoare annotation was computed. [2020-07-21 01:28:53,789 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 01:28:53,789 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,789 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,789 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,789 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,789 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,789 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 01:28:53,789 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 01:28:53,789 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 01:28:53,789 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 01:28:53,790 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 01:28:53,790 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 01:28:53,790 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 01:28:53,790 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 01:28:53,790 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 01:28:53,790 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 01:28:53,790 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,790 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,790 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,790 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,791 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,791 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 01:28:53,791 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 01:28:53,791 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 01:28:53,791 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 01:28:53,791 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 01:28:53,791 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 01:28:53,791 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 01:28:53,792 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 01:28:53,792 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 01:28:53,792 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 01:28:53,792 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 01:28:53,792 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 01:28:53,792 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 01:28:53,792 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,792 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,792 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,793 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,793 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,793 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 01:28:53,793 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 01:28:53,793 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 01:28:53,793 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 01:28:53,793 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 01:28:53,793 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 01:28:53,794 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 01:28:53,794 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 01:28:53,794 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 01:28:53,794 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,794 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,794 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,794 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,794 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,794 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,794 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,794 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 01:28:53,795 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 01:28:53,795 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 01:28:53,795 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 01:28:53,795 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 01:28:53,795 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 01:28:53,795 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 01:28:53,795 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 01:28:53,795 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 01:28:53,795 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 01:28:53,795 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 01:28:53,795 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 01:28:53,795 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 01:28:53,796 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,796 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,796 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,796 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,796 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 01:28:53,796 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,796 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,796 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 01:28:53,796 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 01:28:53,797 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 01:28:53,797 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 01:28:53,797 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 01:28:53,797 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 01:28:53,797 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 01:28:53,797 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 01:28:53,797 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 01:28:53,797 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 01:28:53,797 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 01:28:53,797 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 01:28:53,797 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 01:28:53,797 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,797 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,797 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,798 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,798 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,798 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,798 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 01:28:53,798 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 01:28:53,798 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 01:28:53,798 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 01:28:53,798 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 01:28:53,798 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 01:28:53,798 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 01:28:53,798 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 01:28:53,798 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 01:28:53,798 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 01:28:53,798 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 01:28:53,799 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse0 (not (< 7 |old(~a19~0)|))) (.cse5 (< 7 ~a19~0)) (.cse8 (<= ~a10~0 |old(~a10~0)|)) (.cse2 (<= |old(~a10~0)| ~a10~0)) (.cse3 (<= |old(~a1~0)| ~a1~0)) (.cse4 (<= ~a19~0 |old(~a19~0)|)) (.cse1 (<= ~a10~0 2)) (.cse7 (not (<= |old(~a19~0)| 9))) (.cse6 (not (<= |old(~a10~0)| 2)))) (and (or .cse0 (and .cse1 .cse2 .cse3 .cse4 .cse5) .cse6) (or .cse0 .cse7 (and .cse8 .cse2 .cse3 .cse4 .cse5)) (or .cse3 .cse7 .cse6) (or (not (<= |old(~a19~0)| 8)) (not (< |old(~a10~0)| 4)) (and .cse2 .cse4 (< ~a10~0 4))) (or .cse8 (not (<= |old(~a10~0)| 1))) (or (not (<= |old(~a19~0)| 6)) (and .cse8 .cse2 .cse3 .cse4)) (or .cse1 .cse7 .cse6))) [2020-07-21 01:28:53,799 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 01:28:53,799 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 01:28:53,799 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 01:28:53,799 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,799 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,799 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,799 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,800 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,800 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,800 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 01:28:53,800 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 01:28:53,800 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 01:28:53,800 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 01:28:53,800 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 01:28:53,800 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 01:28:53,800 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 01:28:53,800 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 01:28:53,800 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 01:28:53,801 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 01:28:53,801 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 01:28:53,801 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 01:28:53,801 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 01:28:53,801 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,801 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,801 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,801 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,802 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,802 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,802 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 01:28:53,802 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 01:28:53,802 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 01:28:53,802 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 01:28:53,802 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 01:28:53,802 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 01:28:53,802 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 01:28:53,803 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 01:28:53,803 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 01:28:53,803 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 01:28:53,803 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 01:28:53,803 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 01:28:53,803 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,803 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,803 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,803 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,804 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,804 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:53,804 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 01:28:53,804 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 01:28:53,804 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 01:28:53,804 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 01:28:53,804 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 01:28:53,804 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 01:28:53,804 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 01:28:53,805 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 01:28:53,805 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 01:28:53,805 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 01:28:53,805 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 01:28:53,805 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 01:28:53,805 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:28:53,805 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= ~a19~0 9) (< 7 ~a19~0)) [2020-07-21 01:28:53,805 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:28:53,805 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:28:53,806 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (< 7 |old(~a19~0)|)) (not (<= |old(~a10~0)| 0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (<= |old(~a1~0)| ~a1~0) (<= ~a19~0 |old(~a19~0)|) (< 7 ~a19~0))) [2020-07-21 01:28:53,806 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 01:28:53,806 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse1 (< 7 ~a19~0)) (.cse0 (<= 9 |old(~a19~0)|))) (or (and (<= ~a19~0 9) .cse0 .cse1) (and (<= ~a10~0 0) (<= |old(~a10~0)| ~a10~0) (<= |old(~a1~0)| ~a1~0) (<= ~a19~0 |old(~a19~0)|) .cse1) (not (<= |old(~a10~0)| 0)) (not (< 7 |old(~a19~0)|)) (and .cse0 (<= ~a19~0 6)) (and .cse0 (<= ~a10~0 2)) (not (<= |old(~a19~0)| 9)) (and .cse0 (<= ~a19~0 8) (< ~a10~0 4)))) [2020-07-21 01:28:53,806 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 01:28:53,806 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 01:28:53,806 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse1 (< 7 ~a19~0)) (.cse0 (<= 9 |old(~a19~0)|))) (or (and (<= ~a19~0 9) .cse0 .cse1) (and (<= ~a10~0 0) (<= |old(~a10~0)| ~a10~0) (<= |old(~a1~0)| ~a1~0) (<= ~a19~0 |old(~a19~0)|) .cse1) (not (<= |old(~a10~0)| 0)) (not (< 7 |old(~a19~0)|)) (and .cse0 (<= ~a19~0 6)) (and .cse0 (<= ~a10~0 2)) (not (<= |old(~a19~0)| 9)) (and .cse0 (<= ~a19~0 8) (< ~a10~0 4)))) [2020-07-21 01:28:53,806 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 01:28:53,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:28:53 BoogieIcfgContainer [2020-07-21 01:28:53,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:28:53,827 INFO L168 Benchmark]: Toolchain (without parser) took 17634.73 ms. Allocated memory was 137.9 MB in the beginning and 552.6 MB in the end (delta: 414.7 MB). Free memory was 101.0 MB in the beginning and 404.2 MB in the end (delta: -303.2 MB). Peak memory consumption was 381.1 MB. Max. memory is 7.1 GB. [2020-07-21 01:28:53,828 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 01:28:53,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 768.09 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 100.5 MB in the beginning and 169.5 MB in the end (delta: -69.0 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2020-07-21 01:28:53,830 INFO L168 Benchmark]: Boogie Preprocessor took 97.10 ms. Allocated memory is still 203.4 MB. Free memory was 169.5 MB in the beginning and 165.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-21 01:28:53,830 INFO L168 Benchmark]: RCFGBuilder took 1345.06 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 165.4 MB in the beginning and 181.5 MB in the end (delta: -16.1 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. [2020-07-21 01:28:53,831 INFO L168 Benchmark]: TraceAbstraction took 15417.97 ms. Allocated memory was 235.4 MB in the beginning and 552.6 MB in the end (delta: 317.2 MB). Free memory was 181.5 MB in the beginning and 404.2 MB in the end (delta: -222.7 MB). Peak memory consumption was 364.1 MB. Max. memory is 7.1 GB. [2020-07-21 01:28:53,835 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 768.09 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 100.5 MB in the beginning and 169.5 MB in the end (delta: -69.0 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.10 ms. Allocated memory is still 203.4 MB. Free memory was 169.5 MB in the beginning and 165.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1345.06 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 165.4 MB in the beginning and 181.5 MB in the end (delta: -16.1 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15417.97 ms. Allocated memory was 235.4 MB in the beginning and 552.6 MB in the end (delta: 317.2 MB). Free memory was 181.5 MB in the beginning and 404.2 MB in the end (delta: -222.7 MB). Peak memory consumption was 364.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 121]: 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: ((((((((a19 <= 9 && 9 <= \old(a19)) && 7 < a19) || ((((a10 <= 0 && \old(a10) <= a10) && \old(a1) <= a1) && a19 <= \old(a19)) && 7 < a19)) || !(\old(a10) <= 0)) || !(7 < \old(a19))) || (9 <= \old(a19) && a19 <= 6)) || (9 <= \old(a19) && a10 <= 2)) || !(\old(a19) <= 9)) || ((9 <= \old(a19) && a19 <= 8) && a10 < 4) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.7s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 469 SDtfs, 2940 SDslu, 226 SDs, 0 SdLazy, 5407 SolverSat, 1366 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3204 GetRequests, 3156 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2799occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 398 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 84 PreInvPairs, 142 NumberOfFragments, 306 HoareAnnotationTreeSize, 84 FomulaSimplifications, 3968 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 7 FomulaSimplificationsInter, 2663 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1884 NumberOfCodeBlocks, 1528 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 3173 ConstructedInterpolants, 0 QuantifiedInterpolants, 1908405 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2804 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 2686/2877 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...