/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_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:57:39,255 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 22:57:39,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:57:39,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:57:39,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:57:39,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:57:39,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:57:39,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:57:39,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:57:39,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:57:39,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:57:39,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:57:39,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:57:39,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:57:39,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:57:39,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 22:57:39,356 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:57:39,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:57:39,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:57:39,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:57:39,359 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:57:39,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:57:39,359 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:57:39,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:57:39,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:57:39,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:57:39,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:57:39,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:57:39,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:57:39,361 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:57:39,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:57:39,362 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:57:39,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:57:39,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:57:39,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:57:39,363 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:57:39,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:57:39,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:57:39,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:57:39,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:57:39,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:57:39,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:57:39,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:57:39,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:57:39,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:57:39,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 22:57:39,665 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:57:39,677 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:57:39,681 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:57:39,682 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:57:39,682 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:57:39,683 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-07-21 22:57:39,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15a6edab6/4aeb8a43b71140d29150ba74d7ea9ae7/FLAGad406f429 [2020-07-21 22:57:40,276 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:57:40,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-07-21 22:57:40,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15a6edab6/4aeb8a43b71140d29150ba74d7ea9ae7/FLAGad406f429 [2020-07-21 22:57:40,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15a6edab6/4aeb8a43b71140d29150ba74d7ea9ae7 [2020-07-21 22:57:40,576 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:57:40,579 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:57:40,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:57:40,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:57:40,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:57:40,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:57:40" (1/1) ... [2020-07-21 22:57:40,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ad3b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:40, skipping insertion in model container [2020-07-21 22:57:40,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:57:40" (1/1) ... [2020-07-21 22:57:40,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:57:40,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:57:41,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:57:41,184 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:57:41,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:57:41,292 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:57:41,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:41 WrapperNode [2020-07-21 22:57:41,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:57:41,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:57:41,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:57:41,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:57:41,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:41" (1/1) ... [2020-07-21 22:57:41,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:41" (1/1) ... [2020-07-21 22:57:41,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:41" (1/1) ... [2020-07-21 22:57:41,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:41" (1/1) ... [2020-07-21 22:57:41,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:41" (1/1) ... [2020-07-21 22:57:41,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:41" (1/1) ... [2020-07-21 22:57:41,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:41" (1/1) ... [2020-07-21 22:57:41,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:57:41,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:57:41,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:57:41,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:57:41,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:57:41,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:57:41,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:57:41,501 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 22:57:41,501 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:57:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 22:57:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:57:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:57:41,502 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 22:57:41,502 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:57:41,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:57:41,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:57:42,661 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:57:42,661 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 22:57:42,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:57:42 BoogieIcfgContainer [2020-07-21 22:57:42,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:57:42,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:57:42,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:57:42,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:57:42,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:57:40" (1/3) ... [2020-07-21 22:57:42,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc3f62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:57:42, skipping insertion in model container [2020-07-21 22:57:42,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:57:41" (2/3) ... [2020-07-21 22:57:42,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc3f62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:57:42, skipping insertion in model container [2020-07-21 22:57:42,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:57:42" (3/3) ... [2020-07-21 22:57:42,675 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label06.c [2020-07-21 22:57:42,685 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:57:42,693 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:57:42,706 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:57:42,731 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:57:42,731 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:57:42,731 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:57:42,732 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:57:42,732 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:57:42,732 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:57:42,732 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:57:42,732 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:57:42,755 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 22:57:42,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 22:57:42,762 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:57:42,763 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] [2020-07-21 22:57:42,763 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:57:42,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:57:42,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1307500665, now seen corresponding path program 1 times [2020-07-21 22:57:42,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:57:42,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600742601] [2020-07-21 22:57:42,778 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:57:42,875 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:57:42,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:57:42,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 22:57:42,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:57:42,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:57:42,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:57:42,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600742601] [2020-07-21 22:57:42,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:57:42,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:57:42,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905427370] [2020-07-21 22:57:42,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:57:42,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:57:42,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:57:42,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:57:42,971 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 22:57:43,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:57:43,902 INFO L93 Difference]: Finished difference Result 571 states and 989 transitions. [2020-07-21 22:57:43,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:57:43,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-07-21 22:57:43,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:57:43,930 INFO L225 Difference]: With dead ends: 571 [2020-07-21 22:57:43,930 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 22:57:43,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:57:43,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 22:57:44,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 22:57:44,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 22:57:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 391 transitions. [2020-07-21 22:57:44,012 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 391 transitions. Word has length 30 [2020-07-21 22:57:44,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:57:44,012 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 391 transitions. [2020-07-21 22:57:44,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:57:44,013 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 391 transitions. [2020-07-21 22:57:44,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-21 22:57:44,017 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:57:44,018 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:57:44,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:57:44,231 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:57:44,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:57:44,233 INFO L82 PathProgramCache]: Analyzing trace with hash -786244278, now seen corresponding path program 1 times [2020-07-21 22:57:44,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:57:44,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102619740] [2020-07-21 22:57:44,235 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:57:44,336 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:57:44,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:57:44,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:57:44,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:57:44,392 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:57:44,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:57:44,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102619740] [2020-07-21 22:57:44,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:57:44,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:57:44,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139129925] [2020-07-21 22:57:44,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:57:44,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:57:44,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:57:44,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:57:44,397 INFO L87 Difference]: Start difference. First operand 294 states and 391 transitions. Second operand 3 states. [2020-07-21 22:57:45,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:57:45,021 INFO L93 Difference]: Finished difference Result 725 states and 1001 transitions. [2020-07-21 22:57:45,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:57:45,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-07-21 22:57:45,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:57:45,026 INFO L225 Difference]: With dead ends: 725 [2020-07-21 22:57:45,026 INFO L226 Difference]: Without dead ends: 437 [2020-07-21 22:57:45,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:57:45,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-07-21 22:57:45,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2020-07-21 22:57:45,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-07-21 22:57:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 568 transitions. [2020-07-21 22:57:45,082 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 568 transitions. Word has length 100 [2020-07-21 22:57:45,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:57:45,087 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 568 transitions. [2020-07-21 22:57:45,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:57:45,087 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 568 transitions. [2020-07-21 22:57:45,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-07-21 22:57:45,094 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:57:45,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:57:45,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:57:45,296 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:57:45,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:57:45,297 INFO L82 PathProgramCache]: Analyzing trace with hash -2136138939, now seen corresponding path program 1 times [2020-07-21 22:57:45,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:57:45,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953886204] [2020-07-21 22:57:45,299 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:57:45,381 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:57:45,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:57:45,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:57:45,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:57:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:57:45,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:57:45,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953886204] [2020-07-21 22:57:45,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:57:45,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:57:45,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778652146] [2020-07-21 22:57:45,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:57:45,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:57:45,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:57:45,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:57:45,425 INFO L87 Difference]: Start difference. First operand 437 states and 568 transitions. Second operand 3 states. [2020-07-21 22:57:46,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:57:46,095 INFO L93 Difference]: Finished difference Result 868 states and 1143 transitions. [2020-07-21 22:57:46,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:57:46,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-07-21 22:57:46,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:57:46,104 INFO L225 Difference]: With dead ends: 868 [2020-07-21 22:57:46,104 INFO L226 Difference]: Without dead ends: 866 [2020-07-21 22:57:46,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:57:46,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-07-21 22:57:46,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2020-07-21 22:57:46,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 866 states. [2020-07-21 22:57:46,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1141 transitions. [2020-07-21 22:57:46,145 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1141 transitions. Word has length 109 [2020-07-21 22:57:46,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:57:46,146 INFO L479 AbstractCegarLoop]: Abstraction has 866 states and 1141 transitions. [2020-07-21 22:57:46,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:57:46,146 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1141 transitions. [2020-07-21 22:57:46,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-07-21 22:57:46,150 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:57:46,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:57:46,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:57:46,367 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:57:46,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:57:46,368 INFO L82 PathProgramCache]: Analyzing trace with hash -831400030, now seen corresponding path program 1 times [2020-07-21 22:57:46,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:57:46,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668685572] [2020-07-21 22:57:46,369 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:57:46,478 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:57:46,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:57:46,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 22:57:46,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:57:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:57:46,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:57:46,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668685572] [2020-07-21 22:57:46,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:57:46,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:57:46,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154490478] [2020-07-21 22:57:46,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:57:46,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:57:46,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:57:46,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:57:46,586 INFO L87 Difference]: Start difference. First operand 866 states and 1141 transitions. Second operand 5 states. [2020-07-21 22:57:47,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:57:47,508 INFO L93 Difference]: Finished difference Result 2050 states and 2766 transitions. [2020-07-21 22:57:47,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:57:47,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-07-21 22:57:47,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:57:47,520 INFO L225 Difference]: With dead ends: 2050 [2020-07-21 22:57:47,520 INFO L226 Difference]: Without dead ends: 1190 [2020-07-21 22:57:47,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:57:47,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2020-07-21 22:57:47,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1168. [2020-07-21 22:57:47,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1168 states. [2020-07-21 22:57:47,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1479 transitions. [2020-07-21 22:57:47,562 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1479 transitions. Word has length 152 [2020-07-21 22:57:47,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:57:47,562 INFO L479 AbstractCegarLoop]: Abstraction has 1168 states and 1479 transitions. [2020-07-21 22:57:47,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:57:47,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1479 transitions. [2020-07-21 22:57:47,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-07-21 22:57:47,567 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:57:47,567 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:57:47,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:57:47,782 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:57:47,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:57:47,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1939539595, now seen corresponding path program 1 times [2020-07-21 22:57:47,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:57:47,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974722582] [2020-07-21 22:57:47,785 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:57:47,918 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:57:47,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:57:47,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:57:47,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:57:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:57:47,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:57:48,129 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:57:48,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974722582] [2020-07-21 22:57:48,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:57:48,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:57:48,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497111499] [2020-07-21 22:57:48,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:57:48,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:57:48,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:57:48,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:57:48,135 INFO L87 Difference]: Start difference. First operand 1168 states and 1479 transitions. Second operand 7 states. [2020-07-21 22:57:49,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:57:49,395 INFO L93 Difference]: Finished difference Result 2928 states and 3742 transitions. [2020-07-21 22:57:49,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 22:57:49,398 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-07-21 22:57:49,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:57:49,410 INFO L225 Difference]: With dead ends: 2928 [2020-07-21 22:57:49,410 INFO L226 Difference]: Without dead ends: 1766 [2020-07-21 22:57:49,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 359 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 22:57:49,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2020-07-21 22:57:49,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1474. [2020-07-21 22:57:49,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2020-07-21 22:57:49,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 1751 transitions. [2020-07-21 22:57:49,471 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 1751 transitions. Word has length 182 [2020-07-21 22:57:49,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:57:49,472 INFO L479 AbstractCegarLoop]: Abstraction has 1474 states and 1751 transitions. [2020-07-21 22:57:49,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:57:49,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 1751 transitions. [2020-07-21 22:57:49,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-07-21 22:57:49,480 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:57:49,481 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:57:49,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:57:49,695 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:57:49,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:57:49,696 INFO L82 PathProgramCache]: Analyzing trace with hash 191252768, now seen corresponding path program 1 times [2020-07-21 22:57:49,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:57:49,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032141505] [2020-07-21 22:57:49,698 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:57:49,780 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:57:49,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:57:49,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 22:57:49,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:57:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-21 22:57:49,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:57:49,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032141505] [2020-07-21 22:57:49,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:57:49,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:57:49,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907706796] [2020-07-21 22:57:49,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:57:49,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:57:49,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:57:49,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:57:49,913 INFO L87 Difference]: Start difference. First operand 1474 states and 1751 transitions. Second operand 5 states. [2020-07-21 22:57:50,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:57:50,738 INFO L93 Difference]: Finished difference Result 3125 states and 3707 transitions. [2020-07-21 22:57:50,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:57:50,739 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-07-21 22:57:50,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:57:50,747 INFO L225 Difference]: With dead ends: 3125 [2020-07-21 22:57:50,747 INFO L226 Difference]: Without dead ends: 1657 [2020-07-21 22:57:50,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:57:50,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2020-07-21 22:57:50,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1349. [2020-07-21 22:57:50,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1349 states. [2020-07-21 22:57:50,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1611 transitions. [2020-07-21 22:57:50,786 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1611 transitions. Word has length 199 [2020-07-21 22:57:50,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:57:50,787 INFO L479 AbstractCegarLoop]: Abstraction has 1349 states and 1611 transitions. [2020-07-21 22:57:50,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:57:50,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1611 transitions. [2020-07-21 22:57:50,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-07-21 22:57:50,793 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:57:50,793 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:57:51,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:57:51,007 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:57:51,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:57:51,008 INFO L82 PathProgramCache]: Analyzing trace with hash -675546334, now seen corresponding path program 1 times [2020-07-21 22:57:51,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:57:51,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779899457] [2020-07-21 22:57:51,009 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:57:51,105 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:57:51,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:57:51,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-21 22:57:51,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:57:51,146 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:57:51,148 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:58:12,599 WARN L193 SmtUtils]: Spent 21.41 s on a formula simplification that was a NOOP. DAG size: 39 [2020-07-21 22:58:12,644 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:58:12,840 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:58:12,841 INFO L501 QuantifierPusher]: Distributing 6 conjuncts over 3 disjuncts [2020-07-21 22:58:12,843 INFO L501 QuantifierPusher]: Distributing 6 conjuncts over 2 disjuncts [2020-07-21 22:58:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 244 proven. 41 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-21 22:58:13,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:58:13,358 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 22:58:13,642 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:13,645 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:13,648 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:58:13,649 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:13,651 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:13,660 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:58:13,661 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:58:13,663 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:58:17,663 WARN L193 SmtUtils]: Spent 3.93 s on a formula simplification. DAG size of input: 37 DAG size of output: 20 [2020-07-21 22:58:17,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779899457] [2020-07-21 22:58:17,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 22:58:17,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-21 22:58:17,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068930388] [2020-07-21 22:58:17,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 22:58:17,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:58:17,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 22:58:17,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-07-21 22:58:17,666 INFO L87 Difference]: Start difference. First operand 1349 states and 1611 transitions. Second operand 9 states. [2020-07-21 22:58:18,293 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-07-21 22:58:58,822 WARN L193 SmtUtils]: Spent 39.04 s on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2020-07-21 22:59:00,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:59:00,143 INFO L93 Difference]: Finished difference Result 4475 states and 5731 transitions. [2020-07-21 22:59:00,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-21 22:59:00,144 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 278 [2020-07-21 22:59:00,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:59:00,161 INFO L225 Difference]: With dead ends: 4475 [2020-07-21 22:59:00,161 INFO L226 Difference]: Without dead ends: 3248 [2020-07-21 22:59:00,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 459 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 65.3s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-07-21 22:59:00,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2020-07-21 22:59:00,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 3153. [2020-07-21 22:59:00,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3153 states. [2020-07-21 22:59:00,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 3910 transitions. [2020-07-21 22:59:00,261 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 3910 transitions. Word has length 278 [2020-07-21 22:59:00,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:59:00,261 INFO L479 AbstractCegarLoop]: Abstraction has 3153 states and 3910 transitions. [2020-07-21 22:59:00,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 22:59:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 3910 transitions. [2020-07-21 22:59:00,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-07-21 22:59:00,270 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:59:00,271 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:59:00,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:59:00,485 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:59:00,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:59:00,485 INFO L82 PathProgramCache]: Analyzing trace with hash 42828074, now seen corresponding path program 1 times [2020-07-21 22:59:00,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:59:00,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491413311] [2020-07-21 22:59:00,486 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:59:00,604 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:59:00,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:59:00,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 22:59:00,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:59:00,653 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:59:00,657 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:59:00,658 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:59:00,660 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 22:59:00,669 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:59:00,671 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:59:00,672 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:59:00,674 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:59:00,677 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 22:59:00,677 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 22:59:00,680 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:59:00,684 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:59:00,685 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:59:00,686 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:59:00,688 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:59:00,690 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:59:00,691 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:59:00,700 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:59:00,702 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:59:00,704 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:59:00,704 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:59:00,706 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:59:00,707 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:59:00,707 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:59:00,710 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 22:59:00,711 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 22:59:22,071 WARN L193 SmtUtils]: Spent 21.27 s on a formula simplification. DAG size of input: 69 DAG size of output: 36 [2020-07-21 22:59:22,114 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:59:22,219 INFO L501 QuantifierPusher]: Distributing 6 conjuncts over 2 disjuncts [2020-07-21 22:59:22,524 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 292 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-21 22:59:22,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:59:22,627 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 22:59:22,879 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:59:22,880 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:59:22,881 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:59:22,881 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:59:22,882 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,883 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:59:22,884 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,885 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,885 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,886 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,888 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:59:22,888 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,889 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 22:59:22,890 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,891 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,892 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,893 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,894 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,895 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:59:22,896 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,897 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,897 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,898 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,899 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 22:59:22,901 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,902 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,903 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:59:22,904 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:59:22,905 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:59:22,905 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:59:22,906 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:59:22,906 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:59:22,907 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:59:22,909 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:59:22,910 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:59:22,910 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:59:22,911 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,912 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:59:22,913 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:59:22,914 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:59:22,915 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,915 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 22:59:22,917 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:59:22,918 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 22:59:22,919 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:59:22,920 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:59:22,921 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:59:22,921 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:59:22,922 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,923 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:59:22,923 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,925 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,925 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,926 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,927 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:59:22,928 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,929 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 22:59:22,930 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,930 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,931 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,933 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,933 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,935 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:59:22,935 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,936 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,936 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,938 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,939 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 22:59:22,940 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,941 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,942 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:59:22,943 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:59:22,943 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:59:22,944 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:59:22,944 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,945 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:59:22,946 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,947 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,947 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,948 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,949 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:59:22,950 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,950 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 22:59:22,951 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,952 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,953 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,954 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,954 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,956 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:59:22,957 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,957 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,957 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,958 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:22,959 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 22:59:22,961 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 22:59:22,961 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 22:59:35,788 WARN L193 SmtUtils]: Spent 12.66 s on a formula simplification. DAG size of input: 109 DAG size of output: 20 [2020-07-21 22:59:35,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491413311] [2020-07-21 22:59:35,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 22:59:35,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-21 22:59:35,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325684100] [2020-07-21 22:59:35,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 22:59:35,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:59:35,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 22:59:35,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-07-21 22:59:35,792 INFO L87 Difference]: Start difference. First operand 3153 states and 3910 transitions. Second operand 9 states. [2020-07-21 22:59:40,661 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-07-21 23:00:38,227 WARN L193 SmtUtils]: Spent 54.95 s on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2020-07-21 23:00:40,996 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2020-07-21 23:00:42,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:00:42,080 INFO L93 Difference]: Finished difference Result 6513 states and 8280 transitions. [2020-07-21 23:00:42,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-21 23:00:42,082 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 314 [2020-07-21 23:00:42,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:00:42,098 INFO L225 Difference]: With dead ends: 6513 [2020-07-21 23:00:42,098 INFO L226 Difference]: Without dead ends: 3509 [2020-07-21 23:00:42,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 495 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 96.1s TimeCoverageRelationStatistics Valid=223, Invalid=533, Unknown=0, NotChecked=0, Total=756 [2020-07-21 23:00:42,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2020-07-21 23:00:42,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 3465. [2020-07-21 23:00:42,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3465 states. [2020-07-21 23:00:42,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3465 states to 3465 states and 4262 transitions. [2020-07-21 23:00:42,193 INFO L78 Accepts]: Start accepts. Automaton has 3465 states and 4262 transitions. Word has length 314 [2020-07-21 23:00:42,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:00:42,194 INFO L479 AbstractCegarLoop]: Abstraction has 3465 states and 4262 transitions. [2020-07-21 23:00:42,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 23:00:42,194 INFO L276 IsEmpty]: Start isEmpty. Operand 3465 states and 4262 transitions. [2020-07-21 23:00:42,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 23:00:42,204 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:00:42,204 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:00:42,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:42,420 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:00:42,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:00:42,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1891788605, now seen corresponding path program 1 times [2020-07-21 23:00:42,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:00:42,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626336325] [2020-07-21 23:00:42,421 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:42,735 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:00:42,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:00:42,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 23:00:42,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:00:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-07-21 23:00:42,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:00:42,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626336325] [2020-07-21 23:00:42,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:00:42,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 23:00:42,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585110076] [2020-07-21 23:00:42,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 23:00:42,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:00:42,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 23:00:42,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:00:42,837 INFO L87 Difference]: Start difference. First operand 3465 states and 4262 transitions. Second operand 3 states. [2020-07-21 23:00:44,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:00:44,134 INFO L93 Difference]: Finished difference Result 3896 states and 4785 transitions. [2020-07-21 23:00:44,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 23:00:44,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 333 [2020-07-21 23:00:44,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:00:44,144 INFO L225 Difference]: With dead ends: 3896 [2020-07-21 23:00:44,144 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 23:00:44,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 23:00:44,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 23:00:44,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 23:00:44,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 23:00:44,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 23:00:44,153 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 333 [2020-07-21 23:00:44,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:00:44,153 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 23:00:44,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 23:00:44,154 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 23:00:44,154 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 23:00:44,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:00:44,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 23:00:44,865 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 87 [2020-07-21 23:00:44,975 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 87 [2020-07-21 23:00:45,148 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 30 [2020-07-21 23:00:46,223 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 168 DAG size of output: 50 [2020-07-21 23:00:46,607 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 34 [2020-07-21 23:00:46,931 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 34 [2020-07-21 23:00:46,935 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:00:46,935 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)) [2020-07-21 23:00:46,935 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:00:46,935 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 23:00:46,936 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,936 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,936 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,936 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,936 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,936 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,936 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 23:00:46,936 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 23:00:46,936 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 23:00:46,937 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 23:00:46,937 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 23:00:46,937 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 23:00:46,937 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 23:00:46,937 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 23:00:46,937 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 23:00:46,937 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 23:00:46,937 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 23:00:46,937 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,937 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,937 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,938 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,938 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,938 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 23:00:46,938 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 23:00:46,938 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 23:00:46,938 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 23:00:46,938 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 23:00:46,938 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 23:00:46,938 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 23:00:46,938 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 23:00:46,938 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 23:00:46,938 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 23:00:46,938 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 23:00:46,939 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 23:00:46,939 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 23:00:46,939 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 76) no Hoare annotation was computed. [2020-07-21 23:00:46,939 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 23:00:46,939 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,939 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,939 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,939 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,939 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,939 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 23:00:46,939 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 23:00:46,939 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 23:00:46,940 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 23:00:46,940 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 23:00:46,940 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 23:00:46,940 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 23:00:46,940 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 23:00:46,940 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 23:00:46,940 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 23:00:46,941 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,941 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,941 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,941 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,941 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,941 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 23:00:46,941 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 23:00:46,942 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 23:00:46,942 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 23:00:46,942 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 23:00:46,942 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 23:00:46,942 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 23:00:46,942 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 23:00:46,942 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 23:00:46,942 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 23:00:46,948 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 23:00:46,948 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 23:00:46,948 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 23:00:46,949 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,949 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,949 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,949 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,949 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,949 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 23:00:46,949 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 23:00:46,949 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 23:00:46,949 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 23:00:46,950 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 23:00:46,950 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 23:00:46,950 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 23:00:46,950 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 23:00:46,950 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 23:00:46,950 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,950 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,950 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,951 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,951 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,951 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,951 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,951 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 23:00:46,951 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 23:00:46,951 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 23:00:46,951 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 23:00:46,951 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 23:00:46,951 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 23:00:46,952 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 23:00:46,952 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 23:00:46,952 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 23:00:46,952 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 23:00:46,952 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 23:00:46,952 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 23:00:46,952 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 23:00:46,952 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,953 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,953 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,953 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,953 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 23:00:46,953 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,954 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,954 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 23:00:46,954 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 23:00:46,954 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 23:00:46,955 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 23:00:46,955 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 23:00:46,955 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 23:00:46,955 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 23:00:46,955 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 23:00:46,955 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 23:00:46,955 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 23:00:46,955 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 23:00:46,955 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 23:00:46,956 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 23:00:46,956 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,956 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,956 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,956 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,956 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,956 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,956 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 23:00:46,956 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 23:00:46,957 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 23:00:46,957 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 23:00:46,957 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 23:00:46,957 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 23:00:46,957 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 23:00:46,957 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 23:00:46,957 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 23:00:46,957 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 23:00:46,957 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 23:00:46,958 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse0 (= ~a10~0 |old(~a10~0)|)) (.cse1 (<= ~a19~0 |old(~a19~0)|)) (.cse2 (= ~a1~0 |old(~a1~0)|))) (let ((.cse4 (not (<= 8 |old(~a19~0)|))) (.cse9 (= ~a19~0 |old(~a19~0)|)) (.cse6 (not (<= |old(~a10~0)| 2))) (.cse7 (not (<= |old(~a19~0)| 9))) (.cse3 (not (= 0 ~a12~0))) (.cse5 (not (= 14 ~a4~0))) (.cse8 (and .cse0 .cse1 .cse2))) (and (or (and .cse0 (<= 8 ~a19~0) .cse1 .cse2) .cse3 .cse4 .cse5 .cse6) (or .cse3 .cse5 .cse7 .cse8 (not (<= 2 |old(~a10~0)|))) (or .cse3 .cse4 .cse5 .cse9 .cse7) (or (not (<= 23 |old(~a1~0)|)) .cse3 .cse4 .cse5 .cse9 .cse6) (or .cse3 (not (<= 7 |old(~a19~0)|)) .cse5 .cse7 (and .cse0 (<= 7 ~a19~0) .cse1 .cse2)) (or (not (<= |old(~a10~0)| 0)) .cse3 .cse5 .cse8)))) [2020-07-21 23:00:46,958 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 23:00:46,958 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 23:00:46,958 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 23:00:46,958 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,958 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,958 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,959 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,959 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,959 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,959 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 23:00:46,959 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 23:00:46,959 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 23:00:46,959 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 23:00:46,959 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 23:00:46,959 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 23:00:46,959 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 23:00:46,960 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 23:00:46,960 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 23:00:46,960 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 23:00:46,960 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 23:00:46,960 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 23:00:46,960 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 23:00:46,960 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,960 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,960 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,961 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,961 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,961 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,961 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 23:00:46,961 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 23:00:46,961 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 23:00:46,961 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 23:00:46,961 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 23:00:46,961 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 23:00:46,962 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 23:00:46,962 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 23:00:46,962 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 23:00:46,962 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 23:00:46,962 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 23:00:46,962 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 23:00:46,962 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,962 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,962 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,962 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,963 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,963 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 23:00:46,963 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 23:00:46,963 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 23:00:46,963 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 23:00:46,963 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 23:00:46,963 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 23:00:46,963 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 23:00:46,963 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 23:00:46,964 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 23:00:46,964 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 23:00:46,964 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 23:00:46,964 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 23:00:46,964 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 23:00:46,964 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 23:00:46,964 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (= 14 ~a4~0) (<= ~a19~0 9) (<= 8 ~a19~0) (= 0 ~a12~0) (= 23 ~a1~0)) [2020-07-21 23:00:46,964 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 23:00:46,964 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 23:00:46,965 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (= 23 |old(~a1~0)|)) (not (<= |old(~a10~0)| 0)) (not (= 0 ~a12~0)) (not (<= 8 |old(~a19~0)|)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (and (= ~a10~0 |old(~a10~0)|) (= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|))) [2020-07-21 23:00:46,965 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 23:00:46,965 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (or (<= ~a10~0 0) (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (not (= 0 ~a12~0)) (not (<= 8 |old(~a19~0)|)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a19~0 9) (<= 2 ~a10~0)) (and (<= 7 ~a19~0) (<= ~a10~0 2))) [2020-07-21 23:00:46,965 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 23:00:46,965 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 23:00:46,965 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (or (<= ~a10~0 0) (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (not (= 0 ~a12~0)) (not (<= 8 |old(~a19~0)|)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a19~0 9) (<= 2 ~a10~0)) (and (<= 7 ~a19~0) (<= ~a10~0 2))) [2020-07-21 23:00:46,965 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 23:00:46,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:00:46 BoogieIcfgContainer [2020-07-21 23:00:46,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 23:00:46,990 INFO L168 Benchmark]: Toolchain (without parser) took 186411.90 ms. Allocated memory was 146.3 MB in the beginning and 488.6 MB in the end (delta: 342.4 MB). Free memory was 100.9 MB in the beginning and 336.4 MB in the end (delta: -235.5 MB). Peak memory consumption was 341.8 MB. Max. memory is 7.1 GB. [2020-07-21 23:00:46,990 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 23:00:46,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.08 ms. Allocated memory was 146.3 MB in the beginning and 205.5 MB in the end (delta: 59.2 MB). Free memory was 100.5 MB in the beginning and 171.4 MB in the end (delta: -71.0 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. [2020-07-21 23:00:46,994 INFO L168 Benchmark]: Boogie Preprocessor took 131.95 ms. Allocated memory is still 205.5 MB. Free memory was 171.4 MB in the beginning and 166.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-07-21 23:00:47,002 INFO L168 Benchmark]: RCFGBuilder took 1239.81 ms. Allocated memory was 205.5 MB in the beginning and 237.0 MB in the end (delta: 31.5 MB). Free memory was 166.6 MB in the beginning and 179.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. [2020-07-21 23:00:47,003 INFO L168 Benchmark]: TraceAbstraction took 184319.17 ms. Allocated memory was 237.0 MB in the beginning and 488.6 MB in the end (delta: 251.7 MB). Free memory was 177.8 MB in the beginning and 336.4 MB in the end (delta: -158.6 MB). Peak memory consumption was 328.0 MB. Max. memory is 7.1 GB. [2020-07-21 23:00:47,010 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 715.08 ms. Allocated memory was 146.3 MB in the beginning and 205.5 MB in the end (delta: 59.2 MB). Free memory was 100.5 MB in the beginning and 171.4 MB in the end (delta: -71.0 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.95 ms. Allocated memory is still 205.5 MB. Free memory was 171.4 MB in the beginning and 166.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1239.81 ms. Allocated memory was 205.5 MB in the beginning and 237.0 MB in the end (delta: 31.5 MB). Free memory was 166.6 MB in the beginning and 179.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 184319.17 ms. Allocated memory was 237.0 MB in the beginning and 488.6 MB in the end (delta: 251.7 MB). Free memory was 177.8 MB in the beginning and 336.4 MB in the end (delta: -158.6 MB). Peak memory consumption was 328.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 76]: 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: (((((((a10 <= 0 || !(\old(a10) <= 0)) || !(23 == \old(a1))) || !(0 == a12)) || !(8 <= \old(a19))) || !(14 == a4)) || !(\old(a19) <= 9)) || (a19 <= 9 && 2 <= a10)) || (7 <= a19 && a10 <= 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 181.6s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 115.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 483 SDtfs, 3420 SDslu, 314 SDs, 0 SdLazy, 6882 SolverSat, 1460 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2296 GetRequests, 2220 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 161.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3465occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 761 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 99 PreInvPairs, 165 NumberOfFragments, 304 HoareAnnotationTreeSize, 99 FomulaSimplifications, 7173 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 7 FomulaSimplificationsInter, 3586 FormulaSimplificationTreeSizeReductionInter, 1.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 62.4s InterpolantComputationTime, 1697 NumberOfCodeBlocks, 1383 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1869 ConstructedInterpolants, 12 QuantifiedInterpolants, 2147128 SizeOfPredicates, 24 NumberOfNonLiveVariables, 2696 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 1329/1378 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...