/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:22:37,820 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 01:22:37,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:22:37,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:22:37,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:22:37,907 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 01:22:37,927 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:22:37,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:22:37,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:22:37,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:22:37,930 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:22:37,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:22:37,930 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:22:37,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:22:37,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:22:37,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:22:37,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:22:37,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:22:37,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:22:37,932 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:22:37,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:22:37,932 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:22:37,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:22:37,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:22:37,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:22:37,933 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:22:37,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:22:37,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:22:37,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:22:37,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:22:37,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:22:37,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:22:37,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:22:37,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:22:37,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:22:37,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 01:22:38,204 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:22:38,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:22:38,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:22:38,227 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:22:38,227 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:22:38,228 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-07-21 01:22:38,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b011185f3/9d74139ae2a444a99b800e8fa58ed350/FLAGe0697818f [2020-07-21 01:22:38,841 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:22:38,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-07-21 01:22:38,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b011185f3/9d74139ae2a444a99b800e8fa58ed350/FLAGe0697818f [2020-07-21 01:22:39,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b011185f3/9d74139ae2a444a99b800e8fa58ed350 [2020-07-21 01:22:39,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:22:39,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:22:39,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:22:39,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:22:39,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:22:39,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:22:39" (1/1) ... [2020-07-21 01:22:39,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@993f34d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:22:39, skipping insertion in model container [2020-07-21 01:22:39,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:22:39" (1/1) ... [2020-07-21 01:22:39,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:22:39,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:22:39,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:22:39,742 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:22:39,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:22:39,857 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:22:39,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:22:39 WrapperNode [2020-07-21 01:22:39,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:22:39,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:22:39,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:22:39,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:22:39,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:22:39" (1/1) ... [2020-07-21 01:22:39,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:22:39" (1/1) ... [2020-07-21 01:22:39,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:22:39" (1/1) ... [2020-07-21 01:22:39,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:22:39" (1/1) ... [2020-07-21 01:22:39,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:22:39" (1/1) ... [2020-07-21 01:22:39,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:22:39" (1/1) ... [2020-07-21 01:22:39,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:22:39" (1/1) ... [2020-07-21 01:22:39,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:22:39,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:22:39,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:22:39,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:22:40,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:22:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:22:40,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:22:40,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:22:40,057 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 01:22:40,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:22:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 01:22:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:22:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:22:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:22:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:22:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:22:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:22:41,244 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:22:41,245 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:22:41,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:22:41 BoogieIcfgContainer [2020-07-21 01:22:41,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:22:41,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:22:41,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:22:41,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:22:41,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:22:39" (1/3) ... [2020-07-21 01:22:41,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a963e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:22:41, skipping insertion in model container [2020-07-21 01:22:41,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:22:39" (2/3) ... [2020-07-21 01:22:41,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a963e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:22:41, skipping insertion in model container [2020-07-21 01:22:41,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:22:41" (3/3) ... [2020-07-21 01:22:41,267 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label58.c [2020-07-21 01:22:41,278 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:22:41,290 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:22:41,304 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:22:41,336 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:22:41,337 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:22:41,337 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:22:41,338 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:22:41,338 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:22:41,338 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:22:41,338 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:22:41,339 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:22:41,367 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 01:22:41,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-07-21 01:22:41,388 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:22:41,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:22:41,390 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:22:41,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:22:41,397 INFO L82 PathProgramCache]: Analyzing trace with hash 575241111, now seen corresponding path program 1 times [2020-07-21 01:22:41,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:22:41,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250388997] [2020-07-21 01:22:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:22:41,606 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:22:41,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:22:41,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-21 01:22:41,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:22:41,938 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-07-21 01:22:42,078 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2020-07-21 01:22:42,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:22:42,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:22:42,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250388997] [2020-07-21 01:22:42,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:22:42,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 01:22:42,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387596128] [2020-07-21 01:22:42,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 01:22:42,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:22:42,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 01:22:42,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:22:42,539 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 11 states. [2020-07-21 01:22:44,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:22:44,254 INFO L93 Difference]: Finished difference Result 472 states and 791 transitions. [2020-07-21 01:22:44,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:22:44,257 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2020-07-21 01:22:44,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:22:44,281 INFO L225 Difference]: With dead ends: 472 [2020-07-21 01:22:44,281 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 01:22:44,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-07-21 01:22:44,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 01:22:44,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-07-21 01:22:44,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-21 01:22:44,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2020-07-21 01:22:44,352 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 105 [2020-07-21 01:22:44,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:22:44,352 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2020-07-21 01:22:44,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 01:22:44,353 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2020-07-21 01:22:44,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-07-21 01:22:44,356 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:22:44,357 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:22:44,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:22:44,566 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:22:44,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:22:44,567 INFO L82 PathProgramCache]: Analyzing trace with hash -702045412, now seen corresponding path program 1 times [2020-07-21 01:22:44,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:22:44,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597829818] [2020-07-21 01:22:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:22:44,671 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:22:44,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:22:44,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-21 01:22:44,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:22:45,355 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:22:45,359 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 01:22:45,359 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 01:22:45,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:22:45,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:22:45,815 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-07-21 01:22:46,148 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-07-21 01:22:46,306 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 01:22:46,462 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 01:22:46,594 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 01:22:46,599 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 7 conjuncts [2020-07-21 01:22:46,601 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 6 conjuncts [2020-07-21 01:22:46,602 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 01:22:46,604 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 01:22:46,605 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:22:46,606 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:22:46,610 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 01:22:46,611 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 01:22:46,612 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:22:46,619 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:22:46,621 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:22:46,623 INFO L501 QuantifierPusher]: Distributing 14 disjuncts over 3 conjuncts [2020-07-21 01:22:46,624 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:22:46,625 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:22:46,626 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:22:46,629 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:22:46,630 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:22:46,632 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:22:46,633 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:22:46,635 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:22:46,635 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:22:46,640 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:22:46,641 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:22:46,644 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:22:46,645 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:22:47,225 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-07-21 01:22:47,228 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 7, 1] term [2020-07-21 01:22:47,228 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:22:47,299 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:22:47,299 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:22:47,353 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:22:47,375 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:22:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:22:47,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597829818] [2020-07-21 01:22:47,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:22:47,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2020-07-21 01:22:47,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082026536] [2020-07-21 01:22:47,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 01:22:47,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:22:47,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 01:22:47,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-07-21 01:22:47,570 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand 25 states. [2020-07-21 01:22:48,559 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 01:22:49,309 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-07-21 01:22:49,764 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 01:22:49,972 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-07-21 01:22:50,372 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-07-21 01:22:52,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:22:52,602 INFO L93 Difference]: Finished difference Result 590 states and 879 transitions. [2020-07-21 01:22:52,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 01:22:52,604 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 113 [2020-07-21 01:22:52,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:22:52,610 INFO L225 Difference]: With dead ends: 590 [2020-07-21 01:22:52,611 INFO L226 Difference]: Without dead ends: 453 [2020-07-21 01:22:52,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 198 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=551, Invalid=1611, Unknown=0, NotChecked=0, Total=2162 [2020-07-21 01:22:52,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-07-21 01:22:52,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 417. [2020-07-21 01:22:52,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-21 01:22:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 549 transitions. [2020-07-21 01:22:52,658 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 549 transitions. Word has length 113 [2020-07-21 01:22:52,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:22:52,659 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 549 transitions. [2020-07-21 01:22:52,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 01:22:52,659 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 549 transitions. [2020-07-21 01:22:52,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-07-21 01:22:52,663 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:22:52,663 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:22:52,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:22:52,877 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:22:52,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:22:52,878 INFO L82 PathProgramCache]: Analyzing trace with hash 2134897886, now seen corresponding path program 1 times [2020-07-21 01:22:52,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:22:52,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374827286] [2020-07-21 01:22:52,879 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:22:52,990 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:22:52,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:22:52,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:22:52,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:22:53,024 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:22:53,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:22:53,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374827286] [2020-07-21 01:22:53,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:22:53,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:22:53,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086157457] [2020-07-21 01:22:53,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:22:53,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:22:53,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:22:53,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:22:53,028 INFO L87 Difference]: Start difference. First operand 417 states and 549 transitions. Second operand 3 states. [2020-07-21 01:22:53,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:22:53,620 INFO L93 Difference]: Finished difference Result 1042 states and 1436 transitions. [2020-07-21 01:22:53,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:22:53,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2020-07-21 01:22:53,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:22:53,631 INFO L225 Difference]: With dead ends: 1042 [2020-07-21 01:22:53,632 INFO L226 Difference]: Without dead ends: 691 [2020-07-21 01:22:53,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:22:53,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-07-21 01:22:53,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2020-07-21 01:22:53,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-07-21 01:22:53,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 898 transitions. [2020-07-21 01:22:53,674 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 898 transitions. Word has length 116 [2020-07-21 01:22:53,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:22:53,675 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 898 transitions. [2020-07-21 01:22:53,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:22:53,675 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 898 transitions. [2020-07-21 01:22:53,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-07-21 01:22:53,682 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:22:53,682 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:22:53,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:22:53,901 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:22:53,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:22:53,902 INFO L82 PathProgramCache]: Analyzing trace with hash -672258637, now seen corresponding path program 1 times [2020-07-21 01:22:53,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:22:53,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810610817] [2020-07-21 01:22:53,903 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:22:53,988 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 01:22:53,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:22:53,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 01:22:53,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:22:54,027 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:22:54,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:22:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:22:54,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810610817] [2020-07-21 01:22:54,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:22:54,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 01:22:54,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654315886] [2020-07-21 01:22:54,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 01:22:54,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:22:54,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 01:22:54,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:22:54,081 INFO L87 Difference]: Start difference. First operand 691 states and 898 transitions. Second operand 6 states. [2020-07-21 01:22:54,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:22:54,936 INFO L93 Difference]: Finished difference Result 1620 states and 2190 transitions. [2020-07-21 01:22:54,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:22:54,937 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2020-07-21 01:22:54,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:22:54,949 INFO L225 Difference]: With dead ends: 1620 [2020-07-21 01:22:54,949 INFO L226 Difference]: Without dead ends: 995 [2020-07-21 01:22:54,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:22:54,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2020-07-21 01:22:55,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 973. [2020-07-21 01:22:55,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-07-21 01:22:55,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1268 transitions. [2020-07-21 01:22:55,015 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1268 transitions. Word has length 125 [2020-07-21 01:22:55,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:22:55,022 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 1268 transitions. [2020-07-21 01:22:55,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 01:22:55,023 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1268 transitions. [2020-07-21 01:22:55,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-07-21 01:22:55,032 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:22:55,033 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:22:55,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:22:55,247 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:22:55,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:22:55,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1207644223, now seen corresponding path program 1 times [2020-07-21 01:22:55,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:22:55,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592323783] [2020-07-21 01:22:55,249 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:22:55,345 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 01:22:55,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:22:55,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:22:55,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:22:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:22:55,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:22:55,607 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 01:22:55,654 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 01:22:55,654 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:22:55,655 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:22:55,655 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:22:55,656 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 2, 1] term [2020-07-21 01:22:55,657 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:22:55,658 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:22:55,658 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:22:55,659 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:22:55,660 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:22:55,661 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:22:55,661 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:22:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:22:55,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592323783] [2020-07-21 01:22:55,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:22:55,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:22:55,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214959506] [2020-07-21 01:22:55,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:22:55,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:22:55,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:22:55,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:22:55,785 INFO L87 Difference]: Start difference. First operand 973 states and 1268 transitions. Second operand 7 states. [2020-07-21 01:22:57,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:22:57,037 INFO L93 Difference]: Finished difference Result 2491 states and 3253 transitions. [2020-07-21 01:22:57,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:22:57,038 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-07-21 01:22:57,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:22:57,044 INFO L225 Difference]: With dead ends: 2491 [2020-07-21 01:22:57,045 INFO L226 Difference]: Without dead ends: 1304 [2020-07-21 01:22:57,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 258 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 01:22:57,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-07-21 01:22:57,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1241. [2020-07-21 01:22:57,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2020-07-21 01:22:57,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1468 transitions. [2020-07-21 01:22:57,088 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1468 transitions. Word has length 131 [2020-07-21 01:22:57,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:22:57,089 INFO L479 AbstractCegarLoop]: Abstraction has 1241 states and 1468 transitions. [2020-07-21 01:22:57,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:22:57,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1468 transitions. [2020-07-21 01:22:57,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-07-21 01:22:57,092 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:22:57,093 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:22:57,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:22:57,307 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:22:57,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:22:57,308 INFO L82 PathProgramCache]: Analyzing trace with hash -69960870, now seen corresponding path program 1 times [2020-07-21 01:22:57,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:22:57,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752446247] [2020-07-21 01:22:57,309 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:22:57,410 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:22:57,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:22:57,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 71 conjunts are in the unsatisfiable core [2020-07-21 01:22:57,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:22:58,047 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:22:58,048 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 01:22:58,048 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 01:22:58,121 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:22:58,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:22:58,732 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-07-21 01:22:58,882 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-07-21 01:22:58,893 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 7 conjuncts [2020-07-21 01:22:58,894 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 6 conjuncts [2020-07-21 01:22:58,895 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:22:58,896 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 4 conjuncts [2020-07-21 01:22:58,897 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 3 conjuncts [2020-07-21 01:22:58,898 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:22:58,901 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:22:58,902 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:22:58,903 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:22:58,904 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:22:58,905 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:22:58,906 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:22:58,906 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:22:58,907 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:22:58,908 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:22:58,910 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:22:58,910 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:22:58,911 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:22:58,912 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:22:58,913 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:22:58,914 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:22:58,915 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:22:58,916 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:22:58,917 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:22:58,918 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:22:58,919 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:22:58,919 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:22:58,922 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:22:58,922 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:22:58,923 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:22:58,924 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:22:58,925 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:22:58,925 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:22:58,927 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:22:58,928 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:22:58,929 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:22:58,930 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:22:58,931 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:22:58,932 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:22:58,934 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:22:58,935 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:22:58,936 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:22:58,937 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:22:58,937 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:22:58,938 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:22:58,939 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:22:58,940 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:22:58,941 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:22:58,942 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:22:58,943 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:22:58,944 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:22:58,944 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:22:58,948 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:22:58,948 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:22:58,949 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:22:58,954 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:22:58,955 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:22:58,959 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:22:58,960 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:22:58,961 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:22:58,965 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:22:58,965 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:22:58,966 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:22:58,967 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:22:58,968 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:22:58,968 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:22:58,970 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:22:58,971 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:22:58,975 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:22:58,976 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:22:58,979 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:22:58,980 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:22:58,981 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:22:58,982 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:22:58,984 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:22:59,891 WARN L193 SmtUtils]: Spent 827.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 38 [2020-07-21 01:22:59,893 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 1] term [2020-07-21 01:22:59,894 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:22:59,997 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:22:59,998 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 01:23:00,077 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 01:23:00,129 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 01:23:00,335 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:23:00,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752446247] [2020-07-21 01:23:00,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:23:00,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2020-07-21 01:23:00,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471488368] [2020-07-21 01:23:00,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 01:23:00,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:23:00,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 01:23:00,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-07-21 01:23:00,338 INFO L87 Difference]: Start difference. First operand 1241 states and 1468 transitions. Second operand 25 states. [2020-07-21 01:23:02,284 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-07-21 01:23:02,575 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-07-21 01:23:02,991 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-07-21 01:23:03,369 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-07-21 01:23:03,618 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-07-21 01:23:03,862 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-07-21 01:23:04,109 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-07-21 01:23:04,524 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-07-21 01:23:04,804 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-07-21 01:23:05,174 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-07-21 01:23:05,450 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-07-21 01:23:05,855 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-07-21 01:23:07,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:23:07,238 INFO L93 Difference]: Finished difference Result 2709 states and 3267 transitions. [2020-07-21 01:23:07,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-21 01:23:07,242 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 146 [2020-07-21 01:23:07,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:23:07,252 INFO L225 Difference]: With dead ends: 2709 [2020-07-21 01:23:07,252 INFO L226 Difference]: Without dead ends: 1500 [2020-07-21 01:23:07,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 266 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=651, Invalid=1899, Unknown=0, NotChecked=0, Total=2550 [2020-07-21 01:23:07,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2020-07-21 01:23:07,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1433. [2020-07-21 01:23:07,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1433 states. [2020-07-21 01:23:07,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1679 transitions. [2020-07-21 01:23:07,304 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1679 transitions. Word has length 146 [2020-07-21 01:23:07,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:23:07,304 INFO L479 AbstractCegarLoop]: Abstraction has 1433 states and 1679 transitions. [2020-07-21 01:23:07,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 01:23:07,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1679 transitions. [2020-07-21 01:23:07,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-07-21 01:23:07,309 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:23:07,309 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:23:07,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:23:07,523 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:23:07,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:23:07,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1335278453, now seen corresponding path program 1 times [2020-07-21 01:23:07,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:23:07,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861467904] [2020-07-21 01:23:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:23:07,649 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:23:07,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:23:07,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:23:07,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:23:07,699 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 46 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 01:23:07,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:23:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 01:23:07,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861467904] [2020-07-21 01:23:07,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:23:07,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-07-21 01:23:07,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423177165] [2020-07-21 01:23:07,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:23:07,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:23:07,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:23:07,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:23:07,788 INFO L87 Difference]: Start difference. First operand 1433 states and 1679 transitions. Second operand 5 states. [2020-07-21 01:23:08,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:23:08,405 INFO L93 Difference]: Finished difference Result 3231 states and 3925 transitions. [2020-07-21 01:23:08,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 01:23:08,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-07-21 01:23:08,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:23:08,423 INFO L225 Difference]: With dead ends: 3231 [2020-07-21 01:23:08,423 INFO L226 Difference]: Without dead ends: 2044 [2020-07-21 01:23:08,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 320 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:23:08,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2020-07-21 01:23:08,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1987. [2020-07-21 01:23:08,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1987 states. [2020-07-21 01:23:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 2400 transitions. [2020-07-21 01:23:08,493 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 2400 transitions. Word has length 163 [2020-07-21 01:23:08,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:23:08,494 INFO L479 AbstractCegarLoop]: Abstraction has 1987 states and 2400 transitions. [2020-07-21 01:23:08,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:23:08,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 2400 transitions. [2020-07-21 01:23:08,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-07-21 01:23:08,500 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:23:08,501 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:23:08,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:23:08,716 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:23:08,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:23:08,716 INFO L82 PathProgramCache]: Analyzing trace with hash -2102635696, now seen corresponding path program 1 times [2020-07-21 01:23:08,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:23:08,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56449387] [2020-07-21 01:23:08,717 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:23:08,819 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:23:08,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:23:08,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 01:23:08,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:23:08,852 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:23:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 80 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-21 01:23:08,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:23:09,044 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:23:09,045 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:23:09,046 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:23:09,046 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:23:09,064 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:23:09,136 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:23:09,138 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:23:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 82 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 01:23:09,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56449387] [2020-07-21 01:23:09,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:23:09,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2020-07-21 01:23:09,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120662711] [2020-07-21 01:23:09,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 01:23:09,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:23:09,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 01:23:09,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:23:09,346 INFO L87 Difference]: Start difference. First operand 1987 states and 2400 transitions. Second operand 8 states. [2020-07-21 01:23:10,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:23:10,780 INFO L93 Difference]: Finished difference Result 4564 states and 5605 transitions. [2020-07-21 01:23:10,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 01:23:10,781 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2020-07-21 01:23:10,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:23:10,793 INFO L225 Difference]: With dead ends: 4564 [2020-07-21 01:23:10,793 INFO L226 Difference]: Without dead ends: 2823 [2020-07-21 01:23:10,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 360 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-07-21 01:23:10,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2020-07-21 01:23:10,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2132. [2020-07-21 01:23:10,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2020-07-21 01:23:10,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 2514 transitions. [2020-07-21 01:23:10,856 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 2514 transitions. Word has length 182 [2020-07-21 01:23:10,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:23:10,856 INFO L479 AbstractCegarLoop]: Abstraction has 2132 states and 2514 transitions. [2020-07-21 01:23:10,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 01:23:10,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 2514 transitions. [2020-07-21 01:23:10,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-07-21 01:23:10,862 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:23:10,863 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:23:11,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:23:11,077 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:23:11,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:23:11,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1908030622, now seen corresponding path program 1 times [2020-07-21 01:23:11,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:23:11,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099671288] [2020-07-21 01:23:11,078 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 01:23:11,178 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:23:11,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:23:11,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 01:23:11,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:23:11,202 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 3, 1] term [2020-07-21 01:23:11,202 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:23:11,203 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:23:11,228 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:23:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-07-21 01:23:11,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:23:11,418 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:23:11,419 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:23:11,419 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:23:11,420 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[5, 3, 1] term [2020-07-21 01:23:11,421 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:23:11,441 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:23:11,442 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:23:11,502 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:23:11,512 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:23:11,555 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-07-21 01:23:11,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099671288] [2020-07-21 01:23:11,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:23:11,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:23:11,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888362606] [2020-07-21 01:23:11,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:23:11,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:23:11,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:23:11,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:23:11,558 INFO L87 Difference]: Start difference. First operand 2132 states and 2514 transitions. Second operand 7 states. [2020-07-21 01:23:12,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:23:12,647 INFO L93 Difference]: Finished difference Result 4518 states and 5421 transitions. [2020-07-21 01:23:12,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 01:23:12,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-07-21 01:23:12,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:23:12,658 INFO L225 Difference]: With dead ends: 4518 [2020-07-21 01:23:12,659 INFO L226 Difference]: Without dead ends: 2591 [2020-07-21 01:23:12,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 393 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:23:12,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2020-07-21 01:23:12,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2559. [2020-07-21 01:23:12,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2559 states. [2020-07-21 01:23:12,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2559 states to 2559 states and 3001 transitions. [2020-07-21 01:23:12,721 INFO L78 Accepts]: Start accepts. Automaton has 2559 states and 3001 transitions. Word has length 198 [2020-07-21 01:23:12,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:23:12,722 INFO L479 AbstractCegarLoop]: Abstraction has 2559 states and 3001 transitions. [2020-07-21 01:23:12,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:23:12,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2559 states and 3001 transitions. [2020-07-21 01:23:12,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-07-21 01:23:12,728 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:23:12,729 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:23:12,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:23:12,942 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:23:12,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:23:12,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1449337234, now seen corresponding path program 1 times [2020-07-21 01:23:12,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:23:12,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446094709] [2020-07-21 01:23:12,942 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:23:13,079 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:23:13,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:23:13,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:23:13,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:23:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-07-21 01:23:13,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:23:13,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446094709] [2020-07-21 01:23:13,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:23:13,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:23:13,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21387303] [2020-07-21 01:23:13,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:23:13,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:23:13,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:23:13,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:23:13,118 INFO L87 Difference]: Start difference. First operand 2559 states and 3001 transitions. Second operand 3 states. [2020-07-21 01:23:13,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:23:13,630 INFO L93 Difference]: Finished difference Result 3240 states and 3799 transitions. [2020-07-21 01:23:13,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:23:13,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-07-21 01:23:13,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:23:13,643 INFO L225 Difference]: With dead ends: 3240 [2020-07-21 01:23:13,643 INFO L226 Difference]: Without dead ends: 3238 [2020-07-21 01:23:13,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:23:13,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2020-07-21 01:23:13,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 2694. [2020-07-21 01:23:13,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2694 states. [2020-07-21 01:23:13,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 3174 transitions. [2020-07-21 01:23:13,705 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 3174 transitions. Word has length 204 [2020-07-21 01:23:13,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:23:13,706 INFO L479 AbstractCegarLoop]: Abstraction has 2694 states and 3174 transitions. [2020-07-21 01:23:13,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:23:13,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 3174 transitions. [2020-07-21 01:23:13,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-07-21 01:23:13,714 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:23:13,715 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-07-21 01:23:13,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:23:13,928 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:23:13,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:23:13,928 INFO L82 PathProgramCache]: Analyzing trace with hash 24557987, now seen corresponding path program 1 times [2020-07-21 01:23:13,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:23:13,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493414270] [2020-07-21 01:23:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:23:14,037 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:23:14,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:23:14,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-21 01:23:14,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:23:14,125 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 209 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-07-21 01:23:14,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:23:14,339 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 01:23:14,390 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:23:14,390 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:23:14,391 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:23:14,391 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:23:14,392 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:23:14,392 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:23:14,393 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:23:14,393 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:23:14,394 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[5, 2, 1] term [2020-07-21 01:23:14,394 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:23:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 164 proven. 51 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-07-21 01:23:14,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493414270] [2020-07-21 01:23:14,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:23:14,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-07-21 01:23:14,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004138736] [2020-07-21 01:23:14,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 01:23:14,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:23:14,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 01:23:14,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:23:14,576 INFO L87 Difference]: Start difference. First operand 2694 states and 3174 transitions. Second operand 12 states. [2020-07-21 01:23:16,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:23:16,852 INFO L93 Difference]: Finished difference Result 6306 states and 7604 transitions. [2020-07-21 01:23:16,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-21 01:23:16,853 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 223 [2020-07-21 01:23:16,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:23:16,853 INFO L225 Difference]: With dead ends: 6306 [2020-07-21 01:23:16,854 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:23:16,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 448 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2020-07-21 01:23:16,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:23:16,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:23:16,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:23:16,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:23:16,867 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 223 [2020-07-21 01:23:16,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:23:16,868 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:23:16,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 01:23:16,868 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:23:16,868 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:23:17,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:23:17,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:23:17,994 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 188 [2020-07-21 01:23:18,310 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 190 [2020-07-21 01:23:19,632 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 246 DAG size of output: 84 [2020-07-21 01:23:20,495 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 44 [2020-07-21 01:23:21,362 WARN L193 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 44 [2020-07-21 01:23:21,366 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:23:21,366 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~a7~0 |old(~a7~0)|) (<= ~a20~0 |old(~a20~0)|) (= ~a17~0 |old(~a17~0)|) (= ~a16~0 |old(~a16~0)|) (or (not (= 1 |old(~a20~0)|)) (not (= 15 |old(~a8~0)|)) (< 0 |old(~a7~0)|) (and (= 1 ~a20~0) (= 15 ~a8~0)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))) (= ~a21~0 |old(~a21~0)|)) [2020-07-21 01:23:21,366 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:23:21,366 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 01:23:21,366 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 01:23:21,366 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,367 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,367 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,367 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,367 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,367 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,367 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 01:23:21,368 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 01:23:21,368 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 01:23:21,368 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 01:23:21,368 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 01:23:21,368 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 01:23:21,369 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 01:23:21,369 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 01:23:21,369 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 01:23:21,369 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 01:23:21,369 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,369 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,370 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,370 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,370 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,370 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,370 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 01:23:21,370 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 01:23:21,370 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 01:23:21,370 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 01:23:21,370 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 01:23:21,370 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 01:23:21,371 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 01:23:21,371 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 01:23:21,371 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 01:23:21,371 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 01:23:21,371 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 01:23:21,371 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 473) no Hoare annotation was computed. [2020-07-21 01:23:21,371 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 01:23:21,371 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 01:23:21,371 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 01:23:21,371 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 01:23:21,371 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,372 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,372 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,372 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,372 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,372 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 01:23:21,372 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 01:23:21,372 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 01:23:21,372 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 01:23:21,372 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 01:23:21,372 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 01:23:21,372 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 01:23:21,372 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 01:23:21,372 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 01:23:21,373 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,373 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,373 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,373 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,373 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,373 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 01:23:21,373 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 01:23:21,373 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 01:23:21,373 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 01:23:21,374 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 01:23:21,374 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 01:23:21,374 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 01:23:21,374 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 01:23:21,374 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 01:23:21,374 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 01:23:21,374 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 01:23:21,374 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 01:23:21,375 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 01:23:21,375 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,375 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,375 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,375 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,375 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,375 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 01:23:21,375 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 01:23:21,375 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 01:23:21,376 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 01:23:21,376 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 01:23:21,376 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 01:23:21,376 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 01:23:21,376 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 01:23:21,376 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 01:23:21,376 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,376 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,377 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,377 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,377 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,377 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,377 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 01:23:21,377 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,377 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 01:23:21,377 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 01:23:21,377 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 01:23:21,377 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 01:23:21,378 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 01:23:21,378 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 01:23:21,378 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 01:23:21,378 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 01:23:21,378 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 01:23:21,378 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 01:23:21,378 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 01:23:21,378 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 01:23:21,378 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 01:23:21,379 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,379 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,379 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,379 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,379 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,379 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 01:23:21,379 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 01:23:21,379 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 01:23:21,379 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 01:23:21,380 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 01:23:21,380 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 01:23:21,380 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 01:23:21,380 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 01:23:21,380 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,380 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,380 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,380 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,380 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,381 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 01:23:21,381 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 01:23:21,381 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 01:23:21,381 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 01:23:21,381 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 01:23:21,381 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 01:23:21,381 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 01:23:21,381 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 01:23:21,381 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 01:23:21,381 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 01:23:21,382 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse13 (= 1 |old(~a21~0)|)) (.cse0 (= ~a7~0 |old(~a7~0)|)) (.cse1 (<= ~a20~0 |old(~a20~0)|)) (.cse2 (= ~a17~0 |old(~a17~0)|)) (.cse3 (= ~a16~0 |old(~a16~0)|)) (.cse4 (= ~a21~0 |old(~a21~0)|)) (.cse12 (= 1 |old(~a17~0)|))) (let ((.cse8 (not .cse12)) (.cse11 (and .cse0 .cse1 .cse2 .cse3 .cse4)) (.cse6 (not (= 15 |old(~a8~0)|))) (.cse7 (not (<= |old(~a7~0)| 0))) (.cse9 (= 15 ~a8~0)) (.cse5 (not .cse13)) (.cse10 (not (= 8 ~a12~0)))) (and (or (not (<= 15 |old(~a8~0)|)) (and .cse0 .cse1 .cse2 .cse3 (<= 15 ~a8~0) .cse4) .cse5) (or (not (= 1 |old(~a7~0)|)) .cse5 (and (= 1 ~a7~0) .cse4)) (or (not (= 5 |old(~a16~0)|)) .cse6 .cse7 .cse8 (not (<= |old(~a20~0)| 0)) (and (not (= 6 |calculate_output_#in~input|)) (not (= 1 |calculate_output_#in~input|)) (not (= 2 |calculate_output_#in~input|)) (not (= 4 |calculate_output_#in~input|)) (not (= 5 |calculate_output_#in~input|)) (not (= 3 |calculate_output_#in~input|))) .cse5 .cse9 .cse10) (or (not (<= |old(~a16~0)| 5)) .cse11) (or (and (or .cse8 .cse5) (or .cse12 .cse13)) .cse11) (or (not (= 1 |old(~a20~0)|)) .cse6 .cse7 (and (= 1 ~a20~0) .cse9) .cse5 .cse10)))) [2020-07-21 01:23:21,382 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 01:23:21,382 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,382 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,382 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,382 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,383 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 01:23:21,383 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,383 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,383 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 01:23:21,383 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 01:23:21,383 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 01:23:21,383 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 01:23:21,383 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 01:23:21,383 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 01:23:21,384 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 01:23:21,384 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 01:23:21,384 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 01:23:21,384 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 01:23:21,384 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 01:23:21,384 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 01:23:21,384 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,384 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,385 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,385 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,385 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,385 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 01:23:21,385 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,385 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 01:23:21,385 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 01:23:21,385 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 01:23:21,385 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 01:23:21,385 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 01:23:21,386 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 01:23:21,386 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 01:23:21,386 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 01:23:21,386 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 01:23:21,386 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 01:23:21,386 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 01:23:21,386 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 01:23:21,386 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 01:23:21,386 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 01:23:21,386 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,386 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,387 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,387 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,387 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,387 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:23:21,387 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 01:23:21,387 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 01:23:21,387 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 01:23:21,387 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 01:23:21,387 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 01:23:21,387 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 01:23:21,388 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 01:23:21,388 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 01:23:21,388 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 01:23:21,388 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 01:23:21,388 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:23:21,388 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (= 1 ~a17~0) (= 1 ~a21~0) (= 1 ~a20~0) (= 15 ~a8~0) (= 5 ~a16~0) (= 8 ~a12~0)) [2020-07-21 01:23:21,388 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:23:21,388 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:23:21,388 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (= 1 |old(~a20~0)|)) (not (= 5 |old(~a16~0)|)) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (and (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (= ~a16~0 |old(~a16~0)|) (= ~a8~0 |old(~a8~0)|) (= 1 ~a21~0) (= ~a20~0 |old(~a20~0)|)) (not (= 1 |old(~a17~0)|)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))) [2020-07-21 01:23:21,388 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 01:23:21,389 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse0 (= 1 ~a17~0)) (.cse1 (= 1 ~a21~0))) (or (not (= 5 |old(~a16~0)|)) (and (not .cse0) (not .cse1)) (not (= 1 |old(~a20~0)|)) (and (<= 15 ~a8~0) .cse1) (and .cse0 .cse1) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (<= ~a16~0 5) (not (= 1 |old(~a17~0)|)) (and (= 1 ~a7~0) .cse1) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0)))) [2020-07-21 01:23:21,389 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 01:23:21,389 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 01:23:21,389 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse0 (= 1 ~a17~0)) (.cse1 (= 1 ~a21~0))) (or (not (= 5 |old(~a16~0)|)) (and (not .cse0) (not .cse1)) (not (= 1 |old(~a20~0)|)) (and (<= 15 ~a8~0) .cse1) (and .cse0 .cse1) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (<= ~a16~0 5) (not (= 1 |old(~a17~0)|)) (and (= 1 ~a7~0) .cse1) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0)))) [2020-07-21 01:23:21,389 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 01:23:21,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:23:21 BoogieIcfgContainer [2020-07-21 01:23:21,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:23:21,411 INFO L168 Benchmark]: Toolchain (without parser) took 42264.01 ms. Allocated memory was 146.3 MB in the beginning and 607.1 MB in the end (delta: 460.8 MB). Free memory was 102.3 MB in the beginning and 503.2 MB in the end (delta: -400.8 MB). Peak memory consumption was 460.5 MB. Max. memory is 7.1 GB. [2020-07-21 01:23:21,411 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 146.3 MB. Free memory is still 122.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 01:23:21,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 708.66 ms. Allocated memory was 146.3 MB in the beginning and 206.6 MB in the end (delta: 60.3 MB). Free memory was 101.9 MB in the beginning and 172.0 MB in the end (delta: -70.1 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2020-07-21 01:23:21,412 INFO L168 Benchmark]: Boogie Preprocessor took 138.82 ms. Allocated memory is still 206.6 MB. Free memory was 172.0 MB in the beginning and 167.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-07-21 01:23:21,413 INFO L168 Benchmark]: RCFGBuilder took 1258.88 ms. Allocated memory was 206.6 MB in the beginning and 238.6 MB in the end (delta: 32.0 MB). Free memory was 167.1 MB in the beginning and 178.3 MB in the end (delta: -11.3 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. [2020-07-21 01:23:21,414 INFO L168 Benchmark]: TraceAbstraction took 40151.79 ms. Allocated memory was 238.6 MB in the beginning and 607.1 MB in the end (delta: 368.6 MB). Free memory was 178.3 MB in the beginning and 503.2 MB in the end (delta: -324.8 MB). Peak memory consumption was 444.2 MB. Max. memory is 7.1 GB. [2020-07-21 01:23:21,417 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 146.3 MB. Free memory is still 122.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 708.66 ms. Allocated memory was 146.3 MB in the beginning and 206.6 MB in the end (delta: 60.3 MB). Free memory was 101.9 MB in the beginning and 172.0 MB in the end (delta: -70.1 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.82 ms. Allocated memory is still 206.6 MB. Free memory was 172.0 MB in the beginning and 167.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1258.88 ms. Allocated memory was 206.6 MB in the beginning and 238.6 MB in the end (delta: 32.0 MB). Free memory was 167.1 MB in the beginning and 178.3 MB in the end (delta: -11.3 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 40151.79 ms. Allocated memory was 238.6 MB in the beginning and 607.1 MB in the end (delta: 368.6 MB). Free memory was 178.3 MB in the beginning and 503.2 MB in the end (delta: -324.8 MB). Peak memory consumption was 444.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 473]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 583]: Loop Invariant Derived loop invariant: ((((((((((!(5 == \old(a16)) || (!(1 == a17) && !(1 == a21))) || !(1 == \old(a20))) || (15 <= a8 && 1 == a21)) || (1 == a17 && 1 == a21)) || !(15 == \old(a8))) || !(\old(a7) <= 0)) || a16 <= 5) || !(1 == \old(a17))) || (1 == a7 && 1 == a21)) || !(1 == \old(a21))) || !(8 == a12) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 35.7s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 22.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 557 SDtfs, 5890 SDslu, 722 SDs, 0 SdLazy, 13151 SolverSat, 1476 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3088 GetRequests, 2900 SyntacticMatches, 13 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 11.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2694occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 1512 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 133 PreInvPairs, 219 NumberOfFragments, 423 HoareAnnotationTreeSize, 133 FomulaSimplifications, 24888 FormulaSimplificationTreeSizeReduction, 1.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 29617 FormulaSimplificationTreeSizeReductionInter, 3.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 1706 NumberOfCodeBlocks, 1131 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 2968 ConstructedInterpolants, 0 QuantifiedInterpolants, 5121665 SizeOfPredicates, 77 NumberOfNonLiveVariables, 4054 ConjunctsInSsa, 261 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 1263/1477 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...