/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 NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 17:31:01,316 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-20 17:31:01,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 17:31:01,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 17:31:01,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 17:31:01,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 17:31:01,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 17:31:01,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 17:31:01,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 17:31:01,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 17:31:01,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 17:31:01,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 17:31:01,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 17:31:01,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 17:31:01,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 17:31:01,369 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 [2020-07-20 17:31:01,383 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 17:31:01,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 17:31:01,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 17:31:01,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 17:31:01,385 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 17:31:01,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 17:31:01,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 17:31:01,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 17:31:01,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 17:31:01,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 17:31:01,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 17:31:01,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 17:31:01,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 17:31:01,387 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 17:31:01,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 17:31:01,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 17:31:01,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 17:31:01,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 17:31:01,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 17:31:01,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 17:31:01,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 17:31:01,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 17:31:01,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 17:31:01,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 17:31:01,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 17:31:01,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 17:31:01,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:31:01,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 17:31:01,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 17:31:01,390 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 -> NUM_VARIABLES 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 [2020-07-20 17:31:01,690 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 17:31:01,703 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 17:31:01,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 17:31:01,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 17:31:01,708 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 17:31:01,709 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-07-20 17:31:01,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bea0d008e/7dfcca9134f944569d94ee4957dd59ba/FLAG9ac24e732 [2020-07-20 17:31:02,337 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 17:31:02,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-07-20 17:31:02,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bea0d008e/7dfcca9134f944569d94ee4957dd59ba/FLAG9ac24e732 [2020-07-20 17:31:02,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bea0d008e/7dfcca9134f944569d94ee4957dd59ba [2020-07-20 17:31:02,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 17:31:02,654 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 17:31:02,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 17:31:02,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 17:31:02,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 17:31:02,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:31:02" (1/1) ... [2020-07-20 17:31:02,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c2043f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:31:02, skipping insertion in model container [2020-07-20 17:31:02,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:31:02" (1/1) ... [2020-07-20 17:31:02,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 17:31:02,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 17:31:03,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:31:03,301 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 17:31:03,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:31:03,480 INFO L208 MainTranslator]: Completed translation [2020-07-20 17:31:03,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:31:03 WrapperNode [2020-07-20 17:31:03,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 17:31:03,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 17:31:03,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 17:31:03,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 17:31:03,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:31:03" (1/1) ... [2020-07-20 17:31:03,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:31:03" (1/1) ... [2020-07-20 17:31:03,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:31:03" (1/1) ... [2020-07-20 17:31:03,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:31:03" (1/1) ... [2020-07-20 17:31:03,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:31:03" (1/1) ... [2020-07-20 17:31:03,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:31:03" (1/1) ... [2020-07-20 17:31:03,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:31:03" (1/1) ... [2020-07-20 17:31:03,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 17:31:03,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 17:31:03,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 17:31:03,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 17:31:03,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:31:03" (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 [2020-07-20 17:31:03,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 17:31:03,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 17:31:03,707 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 17:31:03,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 17:31:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 17:31:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 17:31:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 17:31:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 17:31:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 17:31:03,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 17:31:03,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 17:31:05,276 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 17:31:05,277 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 17:31:05,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:31:05 BoogieIcfgContainer [2020-07-20 17:31:05,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 17:31:05,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 17:31:05,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 17:31:05,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 17:31:05,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:31:02" (1/3) ... [2020-07-20 17:31:05,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e599999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:31:05, skipping insertion in model container [2020-07-20 17:31:05,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:31:03" (2/3) ... [2020-07-20 17:31:05,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e599999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:31:05, skipping insertion in model container [2020-07-20 17:31:05,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:31:05" (3/3) ... [2020-07-20 17:31:05,294 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label53.c [2020-07-20 17:31:05,306 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 17:31:05,315 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 17:31:05,334 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 17:31:05,365 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 17:31:05,366 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 17:31:05,366 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 17:31:05,366 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 17:31:05,366 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 17:31:05,366 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 17:31:05,367 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 17:31:05,367 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 17:31:05,398 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-20 17:31:05,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-20 17:31:05,408 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:31:05,410 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] [2020-07-20 17:31:05,410 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:31:05,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:31:05,419 INFO L82 PathProgramCache]: Analyzing trace with hash 253834415, now seen corresponding path program 1 times [2020-07-20 17:31:05,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:31:05,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945847920] [2020-07-20 17:31:05,430 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 [2020-07-20 17:31:05,548 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:31:05,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:31:05,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 17:31:05,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:31:05,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:31:05,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:31:05,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945847920] [2020-07-20 17:31:05,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:31:05,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:31:05,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151803586] [2020-07-20 17:31:05,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:31:05,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:31:05,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:31:05,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:31:05,656 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-20 17:31:06,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:31:06,833 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-20 17:31:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:31:06,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-07-20 17:31:06,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:31:06,869 INFO L225 Difference]: With dead ends: 586 [2020-07-20 17:31:06,869 INFO L226 Difference]: Without dead ends: 294 [2020-07-20 17:31:06,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:31:06,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-20 17:31:06,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-20 17:31:06,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-20 17:31:07,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2020-07-20 17:31:07,003 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 48 [2020-07-20 17:31:07,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:31:07,004 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2020-07-20 17:31:07,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:31:07,006 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2020-07-20 17:31:07,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-07-20 17:31:07,015 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:31:07,017 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, 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] [2020-07-20 17:31:07,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:31:07,218 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:31:07,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:31:07,219 INFO L82 PathProgramCache]: Analyzing trace with hash -384487862, now seen corresponding path program 1 times [2020-07-20 17:31:07,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:31:07,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790452114] [2020-07-20 17:31:07,220 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 [2020-07-20 17:31:07,324 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:31:07,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:31:07,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:31:07,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:31:07,373 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:31:07,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:31:07,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790452114] [2020-07-20 17:31:07,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:31:07,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:31:07,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414506547] [2020-07-20 17:31:07,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:31:07,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:31:07,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:31:07,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:31:07,377 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand 3 states. [2020-07-20 17:31:08,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:31:08,093 INFO L93 Difference]: Finished difference Result 868 states and 1277 transitions. [2020-07-20 17:31:08,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:31:08,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-07-20 17:31:08,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:31:08,099 INFO L225 Difference]: With dead ends: 868 [2020-07-20 17:31:08,100 INFO L226 Difference]: Without dead ends: 580 [2020-07-20 17:31:08,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:31:08,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-07-20 17:31:08,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2020-07-20 17:31:08,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-07-20 17:31:08,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 762 transitions. [2020-07-20 17:31:08,133 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 762 transitions. Word has length 122 [2020-07-20 17:31:08,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:31:08,134 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 762 transitions. [2020-07-20 17:31:08,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:31:08,134 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 762 transitions. [2020-07-20 17:31:08,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-07-20 17:31:08,138 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:31:08,138 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, 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] [2020-07-20 17:31:08,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:31:08,352 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:31:08,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:31:08,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1735493107, now seen corresponding path program 1 times [2020-07-20 17:31:08,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:31:08,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667560422] [2020-07-20 17:31:08,355 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 [2020-07-20 17:31:08,438 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:31:08,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:31:08,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:31:08,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:31:08,492 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:31:08,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:31:08,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667560422] [2020-07-20 17:31:08,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:31:08,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:31:08,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164436708] [2020-07-20 17:31:08,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:31:08,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:31:08,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:31:08,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:31:08,506 INFO L87 Difference]: Start difference. First operand 580 states and 762 transitions. Second operand 3 states. [2020-07-20 17:31:09,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:31:09,236 INFO L93 Difference]: Finished difference Result 1440 states and 1957 transitions. [2020-07-20 17:31:09,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:31:09,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-07-20 17:31:09,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:31:09,242 INFO L225 Difference]: With dead ends: 1440 [2020-07-20 17:31:09,242 INFO L226 Difference]: Without dead ends: 866 [2020-07-20 17:31:09,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:31:09,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-07-20 17:31:09,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2020-07-20 17:31:09,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 866 states. [2020-07-20 17:31:09,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1139 transitions. [2020-07-20 17:31:09,278 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1139 transitions. Word has length 127 [2020-07-20 17:31:09,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:31:09,279 INFO L479 AbstractCegarLoop]: Abstraction has 866 states and 1139 transitions. [2020-07-20 17:31:09,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:31:09,280 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1139 transitions. [2020-07-20 17:31:09,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-20 17:31:09,283 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:31:09,283 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:31:09,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:31:09,499 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:31:09,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:31:09,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1739497747, now seen corresponding path program 1 times [2020-07-20 17:31:09,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:31:09,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459532234] [2020-07-20 17:31:09,502 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 [2020-07-20 17:31:09,610 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:31:09,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:31:09,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:31:09,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:31:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:31:09,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:31:09,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459532234] [2020-07-20 17:31:09,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:31:09,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:31:09,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153771068] [2020-07-20 17:31:09,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:31:09,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:31:09,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:31:09,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:31:09,656 INFO L87 Difference]: Start difference. First operand 866 states and 1139 transitions. Second operand 3 states. [2020-07-20 17:31:10,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:31:10,463 INFO L93 Difference]: Finished difference Result 2012 states and 2717 transitions. [2020-07-20 17:31:10,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:31:10,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2020-07-20 17:31:10,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:31:10,473 INFO L225 Difference]: With dead ends: 2012 [2020-07-20 17:31:10,473 INFO L226 Difference]: Without dead ends: 1152 [2020-07-20 17:31:10,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:31:10,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2020-07-20 17:31:10,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1152. [2020-07-20 17:31:10,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2020-07-20 17:31:10,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1466 transitions. [2020-07-20 17:31:10,511 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1466 transitions. Word has length 143 [2020-07-20 17:31:10,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:31:10,511 INFO L479 AbstractCegarLoop]: Abstraction has 1152 states and 1466 transitions. [2020-07-20 17:31:10,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:31:10,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1466 transitions. [2020-07-20 17:31:10,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-07-20 17:31:10,516 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:31:10,517 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:31:10,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:31:10,728 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:31:10,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:31:10,729 INFO L82 PathProgramCache]: Analyzing trace with hash 520858779, now seen corresponding path program 1 times [2020-07-20 17:31:10,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:31:10,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144188429] [2020-07-20 17:31:10,731 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 [2020-07-20 17:31:10,849 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:31:10,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:31:10,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:31:10,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:31:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:31:10,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:31:11,039 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:31:11,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144188429] [2020-07-20 17:31:11,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:31:11,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 17:31:11,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060365541] [2020-07-20 17:31:11,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 17:31:11,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:31:11,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 17:31:11,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-20 17:31:11,042 INFO L87 Difference]: Start difference. First operand 1152 states and 1466 transitions. Second operand 7 states. [2020-07-20 17:31:12,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:31:12,723 INFO L93 Difference]: Finished difference Result 3951 states and 5238 transitions. [2020-07-20 17:31:12,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 17:31:12,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2020-07-20 17:31:12,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:31:12,742 INFO L225 Difference]: With dead ends: 3951 [2020-07-20 17:31:12,742 INFO L226 Difference]: Without dead ends: 1921 [2020-07-20 17:31:12,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 395 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-20 17:31:12,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2020-07-20 17:31:12,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1885. [2020-07-20 17:31:12,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-07-20 17:31:12,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2211 transitions. [2020-07-20 17:31:12,834 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2211 transitions. Word has length 200 [2020-07-20 17:31:12,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:31:12,835 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 2211 transitions. [2020-07-20 17:31:12,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 17:31:12,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2211 transitions. [2020-07-20 17:31:12,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-07-20 17:31:12,845 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:31:12,846 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:31:13,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:31:13,057 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:31:13,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:31:13,057 INFO L82 PathProgramCache]: Analyzing trace with hash 782482950, now seen corresponding path program 1 times [2020-07-20 17:31:13,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:31:13,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904362663] [2020-07-20 17:31:13,058 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 [2020-07-20 17:31:13,217 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:31:13,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:31:13,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:31:13,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:31:13,253 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-07-20 17:31:13,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:31:13,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904362663] [2020-07-20 17:31:13,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:31:13,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:31:13,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775583221] [2020-07-20 17:31:13,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:31:13,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:31:13,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:31:13,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:31:13,256 INFO L87 Difference]: Start difference. First operand 1885 states and 2211 transitions. Second operand 3 states. [2020-07-20 17:31:13,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:31:13,919 INFO L93 Difference]: Finished difference Result 4050 states and 4819 transitions. [2020-07-20 17:31:13,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:31:13,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2020-07-20 17:31:13,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:31:13,938 INFO L225 Difference]: With dead ends: 4050 [2020-07-20 17:31:13,938 INFO L226 Difference]: Without dead ends: 2169 [2020-07-20 17:31:13,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:31:13,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2169 states. [2020-07-20 17:31:14,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2169 to 2024. [2020-07-20 17:31:14,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2024 states. [2020-07-20 17:31:14,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2390 transitions. [2020-07-20 17:31:14,017 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2390 transitions. Word has length 215 [2020-07-20 17:31:14,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:31:14,017 INFO L479 AbstractCegarLoop]: Abstraction has 2024 states and 2390 transitions. [2020-07-20 17:31:14,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:31:14,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2390 transitions. [2020-07-20 17:31:14,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-07-20 17:31:14,023 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:31:14,023 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:31:14,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:31:14,239 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:31:14,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:31:14,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1468840372, now seen corresponding path program 1 times [2020-07-20 17:31:14,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:31:14,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89317909] [2020-07-20 17:31:14,241 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 [2020-07-20 17:31:14,384 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:31:14,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:31:14,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:31:14,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:31:14,458 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-20 17:31:14,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:31:14,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89317909] [2020-07-20 17:31:14,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:31:14,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:31:14,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987276753] [2020-07-20 17:31:14,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:31:14,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:31:14,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:31:14,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:31:14,461 INFO L87 Difference]: Start difference. First operand 2024 states and 2390 transitions. Second operand 3 states. [2020-07-20 17:31:15,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:31:15,020 INFO L93 Difference]: Finished difference Result 2026 states and 2391 transitions. [2020-07-20 17:31:15,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:31:15,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 231 [2020-07-20 17:31:15,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:31:15,036 INFO L225 Difference]: With dead ends: 2026 [2020-07-20 17:31:15,036 INFO L226 Difference]: Without dead ends: 2024 [2020-07-20 17:31:15,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:31:15,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2020-07-20 17:31:15,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 2024. [2020-07-20 17:31:15,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2024 states. [2020-07-20 17:31:15,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2389 transitions. [2020-07-20 17:31:15,108 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2389 transitions. Word has length 231 [2020-07-20 17:31:15,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:31:15,108 INFO L479 AbstractCegarLoop]: Abstraction has 2024 states and 2389 transitions. [2020-07-20 17:31:15,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:31:15,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2389 transitions. [2020-07-20 17:31:15,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-07-20 17:31:15,115 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:31:15,115 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:31:15,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:31:15,330 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:31:15,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:31:15,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1385670853, now seen corresponding path program 1 times [2020-07-20 17:31:15,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:31:15,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955060033] [2020-07-20 17:31:15,331 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 [2020-07-20 17:31:15,482 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:31:15,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:31:15,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:31:15,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:31:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-20 17:31:15,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:31:15,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955060033] [2020-07-20 17:31:15,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:31:15,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:31:15,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061147436] [2020-07-20 17:31:15,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:31:15,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:31:15,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:31:15,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:31:15,530 INFO L87 Difference]: Start difference. First operand 2024 states and 2389 transitions. Second operand 3 states. [2020-07-20 17:31:16,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:31:16,111 INFO L93 Difference]: Finished difference Result 2024 states and 2389 transitions. [2020-07-20 17:31:16,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:31:16,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 244 [2020-07-20 17:31:16,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:31:16,113 INFO L225 Difference]: With dead ends: 2024 [2020-07-20 17:31:16,114 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 17:31:16,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:31:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 17:31:16,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 17:31:16,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 17:31:16,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 17:31:16,120 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 244 [2020-07-20 17:31:16,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:31:16,120 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 17:31:16,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:31:16,120 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 17:31:16,121 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 17:31:16,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:31:16,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 17:31:17,086 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2020-07-20 17:31:17,246 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 17:31:17,247 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (<= ~a19~0 |old(~a19~0)|) [2020-07-20 17:31:17,247 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 17:31:17,247 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-20 17:31:17,247 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,247 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,247 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,247 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,247 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,247 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,248 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-20 17:31:17,248 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-20 17:31:17,248 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-20 17:31:17,248 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-20 17:31:17,248 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-20 17:31:17,248 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-20 17:31:17,248 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-20 17:31:17,249 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-20 17:31:17,249 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-20 17:31:17,250 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-20 17:31:17,250 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-20 17:31:17,250 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,250 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,250 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,250 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,250 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,250 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-20 17:31:17,251 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-20 17:31:17,251 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-20 17:31:17,251 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-20 17:31:17,251 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-20 17:31:17,251 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-20 17:31:17,251 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-20 17:31:17,252 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-20 17:31:17,252 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-20 17:31:17,252 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-20 17:31:17,252 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-20 17:31:17,253 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-20 17:31:17,253 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-20 17:31:17,253 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 130) no Hoare annotation was computed. [2020-07-20 17:31:17,253 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-20 17:31:17,253 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,254 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,254 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,254 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,254 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,254 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-20 17:31:17,254 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-20 17:31:17,254 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-20 17:31:17,255 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-20 17:31:17,255 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-20 17:31:17,255 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-20 17:31:17,255 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-20 17:31:17,255 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-20 17:31:17,255 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-20 17:31:17,255 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-20 17:31:17,255 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,256 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,256 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,256 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,256 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,256 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-20 17:31:17,256 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-20 17:31:17,256 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-20 17:31:17,257 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-20 17:31:17,257 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-20 17:31:17,257 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-20 17:31:17,257 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-20 17:31:17,257 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-20 17:31:17,257 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-20 17:31:17,257 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-20 17:31:17,257 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-20 17:31:17,258 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-20 17:31:17,258 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-20 17:31:17,258 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,258 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,258 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,258 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,258 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,258 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-20 17:31:17,259 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-20 17:31:17,259 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-20 17:31:17,259 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-20 17:31:17,259 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-20 17:31:17,259 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-20 17:31:17,259 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-20 17:31:17,259 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-20 17:31:17,260 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-20 17:31:17,260 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,260 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,260 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,260 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,260 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,260 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,260 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,260 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-20 17:31:17,260 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-20 17:31:17,261 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-20 17:31:17,261 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-20 17:31:17,261 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-20 17:31:17,261 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-20 17:31:17,261 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-20 17:31:17,261 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-20 17:31:17,261 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-20 17:31:17,261 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-20 17:31:17,262 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-20 17:31:17,262 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-20 17:31:17,262 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-20 17:31:17,262 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,262 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,262 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,262 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,262 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-20 17:31:17,263 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,263 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,263 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-20 17:31:17,263 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-20 17:31:17,263 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-20 17:31:17,263 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-20 17:31:17,263 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-20 17:31:17,264 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-20 17:31:17,264 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-20 17:31:17,264 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-20 17:31:17,264 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-20 17:31:17,264 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-20 17:31:17,264 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-20 17:31:17,264 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-20 17:31:17,264 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-20 17:31:17,265 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,265 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,265 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,265 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,265 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,265 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,265 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-20 17:31:17,265 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-20 17:31:17,266 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-20 17:31:17,266 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-20 17:31:17,266 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-20 17:31:17,266 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-20 17:31:17,266 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-20 17:31:17,266 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-20 17:31:17,266 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-20 17:31:17,266 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-20 17:31:17,267 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-20 17:31:17,267 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse8 (<= 9 ~a19~0)) (.cse7 (not (<= 9 |old(~a19~0)|))) (.cse5 (not (<= |old(~a19~0)| 8))) (.cse0 (<= ~a19~0 |old(~a19~0)|)) (.cse9 (not (<= |old(~a10~0)| 2))) (.cse4 (not (<= 4 |old(~a10~0)|))) (.cse6 (not (< |old(~a19~0)| 10))) (.cse1 (not (<= |old(~a1~0)| 23))) (.cse2 (<= ~a1~0 23)) (.cse3 (not (<= |old(~a10~0)| 1)))) (and (or (not (<= |old(~a19~0)| 6)) .cse0) (or .cse1 .cse2 .cse3) (or .cse4 .cse5 .cse0) (or .cse6 .cse7 (and .cse8 (< ~a19~0 10))) (or .cse6 (<= ~a10~0 2) .cse9) (or (and .cse8 .cse0) .cse7 .cse3) (or (<= ~a10~0 0) (not (<= |old(~a10~0)| 0))) (or .cse1 .cse5 .cse0) (or .cse5 .cse0 .cse9) (or .cse4 .cse6 (<= 4 ~a10~0)) (or .cse6 .cse1 .cse2) (or (<= ~a10~0 1) .cse3))) [2020-07-20 17:31:17,267 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-20 17:31:17,267 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-20 17:31:17,267 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-20 17:31:17,267 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,267 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,268 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,268 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,268 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,268 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,268 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-20 17:31:17,268 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-20 17:31:17,268 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-20 17:31:17,268 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-20 17:31:17,269 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-20 17:31:17,269 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-20 17:31:17,269 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-20 17:31:17,269 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-20 17:31:17,269 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-20 17:31:17,269 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-20 17:31:17,269 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-20 17:31:17,269 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-20 17:31:17,270 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-20 17:31:17,270 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,270 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,270 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,270 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,270 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,270 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,270 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-20 17:31:17,270 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-20 17:31:17,271 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-20 17:31:17,271 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-20 17:31:17,271 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-20 17:31:17,271 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-20 17:31:17,271 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-20 17:31:17,271 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-20 17:31:17,271 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-20 17:31:17,271 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-20 17:31:17,272 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-20 17:31:17,272 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-20 17:31:17,272 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,272 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,272 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,272 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,272 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,272 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 17:31:17,273 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-20 17:31:17,273 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-20 17:31:17,273 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-20 17:31:17,273 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-20 17:31:17,273 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-20 17:31:17,273 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-20 17:31:17,273 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-20 17:31:17,274 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-20 17:31:17,274 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-20 17:31:17,274 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-20 17:31:17,274 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-20 17:31:17,274 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-20 17:31:17,274 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 17:31:17,274 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= 9 ~a19~0) (<= ~a1~0 23) (< ~a19~0 10)) [2020-07-20 17:31:17,274 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 17:31:17,275 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 17:31:17,275 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (and (<= ~a10~0 0) (<= 9 ~a19~0) (<= ~a1~0 23) (< ~a19~0 10)) (not (< |old(~a19~0)| 10)) (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|))) [2020-07-20 17:31:17,275 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-20 17:31:17,275 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 8))) (or (<= ~a10~0 1) (not (< |old(~a19~0)| 10)) (not (<= |old(~a1~0)| 23)) (<= ~a19~0 6) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and .cse0 (<= ~a1~0 23)) (and .cse0 (<= ~a10~0 2)) (and (<= 9 ~a19~0) (< ~a19~0 10)) (and .cse0 (<= 4 ~a10~0)))) [2020-07-20 17:31:17,275 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-20 17:31:17,275 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-20 17:31:17,276 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 8))) (or (<= ~a10~0 1) (not (< |old(~a19~0)| 10)) (not (<= |old(~a1~0)| 23)) (<= ~a19~0 6) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and .cse0 (<= ~a1~0 23)) (and .cse0 (<= ~a10~0 2)) (and (<= 9 ~a19~0) (< ~a19~0 10)) (and .cse0 (<= 4 ~a10~0)))) [2020-07-20 17:31:17,276 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-20 17:31:17,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:31:17 BoogieIcfgContainer [2020-07-20 17:31:17,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 17:31:17,298 INFO L168 Benchmark]: Toolchain (without parser) took 14645.53 ms. Allocated memory was 136.3 MB in the beginning and 402.1 MB in the end (delta: 265.8 MB). Free memory was 98.0 MB in the beginning and 188.0 MB in the end (delta: -90.0 MB). Peak memory consumption was 175.8 MB. Max. memory is 7.1 GB. [2020-07-20 17:31:17,299 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 118.2 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 17:31:17,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 825.39 ms. Allocated memory was 136.3 MB in the beginning and 202.4 MB in the end (delta: 66.1 MB). Free memory was 97.8 MB in the beginning and 168.4 MB in the end (delta: -70.6 MB). Peak memory consumption was 35.0 MB. Max. memory is 7.1 GB. [2020-07-20 17:31:17,301 INFO L168 Benchmark]: Boogie Preprocessor took 112.91 ms. Allocated memory is still 202.4 MB. Free memory was 168.4 MB in the beginning and 164.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-07-20 17:31:17,302 INFO L168 Benchmark]: RCFGBuilder took 1689.27 ms. Allocated memory was 202.4 MB in the beginning and 230.7 MB in the end (delta: 28.3 MB). Free memory was 164.0 MB in the beginning and 179.4 MB in the end (delta: -15.3 MB). Peak memory consumption was 88.0 MB. Max. memory is 7.1 GB. [2020-07-20 17:31:17,302 INFO L168 Benchmark]: TraceAbstraction took 12011.39 ms. Allocated memory was 230.7 MB in the beginning and 402.1 MB in the end (delta: 171.4 MB). Free memory was 179.4 MB in the beginning and 188.0 MB in the end (delta: -8.6 MB). Peak memory consumption was 162.8 MB. Max. memory is 7.1 GB. [2020-07-20 17:31:17,306 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 118.2 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 825.39 ms. Allocated memory was 136.3 MB in the beginning and 202.4 MB in the end (delta: 66.1 MB). Free memory was 97.8 MB in the beginning and 168.4 MB in the end (delta: -70.6 MB). Peak memory consumption was 35.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.91 ms. Allocated memory is still 202.4 MB. Free memory was 168.4 MB in the beginning and 164.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1689.27 ms. Allocated memory was 202.4 MB in the beginning and 230.7 MB in the end (delta: 28.3 MB). Free memory was 164.0 MB in the beginning and 179.4 MB in the end (delta: -15.3 MB). Peak memory consumption was 88.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12011.39 ms. Allocated memory was 230.7 MB in the beginning and 402.1 MB in the end (delta: 171.4 MB). Free memory was 179.4 MB in the beginning and 188.0 MB in the end (delta: -8.6 MB). Peak memory consumption was 162.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 130]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 582]: Loop Invariant Derived loop invariant: ((((((((a10 <= 1 || !(\old(a19) < 10)) || !(\old(a1) <= 23)) || a19 <= 6) || !(\old(a10) <= 0)) || !(9 <= \old(a19))) || (a19 <= 8 && a1 <= 23)) || (a19 <= 8 && a10 <= 2)) || (9 <= a19 && a19 < 10)) || (a19 <= 8 && 4 <= a10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.9s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 722 SDtfs, 1362 SDslu, 127 SDs, 0 SdLazy, 3570 SolverSat, 631 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1529 GetRequests, 1511 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2024occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 181 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 64 PreInvPairs, 114 NumberOfFragments, 290 HoareAnnotationTreeSize, 64 FomulaSimplifications, 748 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 549 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 1330 NumberOfCodeBlocks, 1330 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1521 ConstructedInterpolants, 0 QuantifiedInterpolants, 501787 SizeOfPredicates, 15 NumberOfNonLiveVariables, 2535 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 899/903 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...