/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:32:25,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:32:25,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:32:25,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:32:25,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:32:25,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:32:25,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:32:25,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:32:25,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:32:25,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:32:25,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:32:25,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:32:25,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:32:25,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:32:25,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:32:25,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:32:25,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:32:25,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:32:25,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:32:25,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:32:25,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:32:25,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:32:25,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:32:25,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:32:25,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:32:25,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:32:25,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:32:25,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:32:25,257 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 11:32:25,272 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:32:25,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:32:25,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:32:25,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:32:25,274 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:32:25,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:32:25,274 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:32:25,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:32:25,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:32:25,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:32:25,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:32:25,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:32:25,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:32:25,276 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:32:25,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:32:25,276 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:32:25,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:32:25,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:32:25,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:32:25,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:32:25,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:32:25,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:32:25,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:32:25,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:32:25,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:32:25,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:32:25,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:25,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:32:25,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:32:25,279 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 -> NOT_INCREMENTALLY [2020-07-20 11:32:25,572 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:32:25,595 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:32:25,599 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:32:25,601 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:32:25,601 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:32:25,603 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-07-20 11:32:25,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd5b2a08e/709bc3fae92b42e9945a146896259115/FLAGffac39d79 [2020-07-20 11:32:26,334 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:32:26,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-07-20 11:32:26,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd5b2a08e/709bc3fae92b42e9945a146896259115/FLAGffac39d79 [2020-07-20 11:32:26,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd5b2a08e/709bc3fae92b42e9945a146896259115 [2020-07-20 11:32:26,556 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:32:26,559 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:32:26,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:32:26,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:32:26,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:32:26,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:32:26" (1/1) ... [2020-07-20 11:32:26,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53e5c994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:26, skipping insertion in model container [2020-07-20 11:32:26,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:32:26" (1/1) ... [2020-07-20 11:32:26,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:32:26,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:32:27,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:32:27,085 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:32:27,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:32:27,346 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:32:27,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27 WrapperNode [2020-07-20 11:32:27,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:32:27,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:32:27,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:32:27,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:32:27,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27" (1/1) ... [2020-07-20 11:32:27,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27" (1/1) ... [2020-07-20 11:32:27,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27" (1/1) ... [2020-07-20 11:32:27,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27" (1/1) ... [2020-07-20 11:32:27,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27" (1/1) ... [2020-07-20 11:32:27,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27" (1/1) ... [2020-07-20 11:32:27,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27" (1/1) ... [2020-07-20 11:32:27,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:32:27,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:32:27,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:32:27,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:32:27,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27" (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 11:32:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:32:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:32:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 11:32:27,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:32:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 11:32:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:32:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:32:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 11:32:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:32:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:32:27,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:32:29,045 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:32:29,046 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 11:32:29,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:32:29 BoogieIcfgContainer [2020-07-20 11:32:29,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:32:29,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:32:29,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:32:29,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:32:29,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:32:26" (1/3) ... [2020-07-20 11:32:29,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a2fecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:32:29, skipping insertion in model container [2020-07-20 11:32:29,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27" (2/3) ... [2020-07-20 11:32:29,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a2fecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:32:29, skipping insertion in model container [2020-07-20 11:32:29,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:32:29" (3/3) ... [2020-07-20 11:32:29,062 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label06.c [2020-07-20 11:32:29,074 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:32:29,082 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:32:29,097 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:32:29,125 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:32:29,125 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:32:29,126 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:32:29,126 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:32:29,126 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:32:29,126 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:32:29,126 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:32:29,127 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:32:29,153 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-20 11:32:29,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-07-20 11:32:29,168 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:29,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:32:29,170 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:29,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:29,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1251834154, now seen corresponding path program 1 times [2020-07-20 11:32:29,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:29,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632884667] [2020-07-20 11:32:29,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:32:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:29,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:32:29,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:29,465 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 11:32:29,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:32:29,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632884667] [2020-07-20 11:32:29,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:32:29,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:32:29,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723430624] [2020-07-20 11:32:29,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:32:29,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:29,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:32:29,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:32:29,496 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-20 11:32:30,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:30,528 INFO L93 Difference]: Finished difference Result 572 states and 963 transitions. [2020-07-20 11:32:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:32:30,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-07-20 11:32:30,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:30,547 INFO L225 Difference]: With dead ends: 572 [2020-07-20 11:32:30,547 INFO L226 Difference]: Without dead ends: 278 [2020-07-20 11:32:30,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 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 11:32:30,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-20 11:32:30,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-20 11:32:30,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-20 11:32:30,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2020-07-20 11:32:30,641 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 130 [2020-07-20 11:32:30,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:30,642 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2020-07-20 11:32:30,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:32:30,645 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2020-07-20 11:32:30,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-07-20 11:32:30,657 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:30,657 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:30,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:30,872 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:30,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:30,873 INFO L82 PathProgramCache]: Analyzing trace with hash -932424019, now seen corresponding path program 1 times [2020-07-20 11:32:30,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:30,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528733094] [2020-07-20 11:32:30,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:32:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:31,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:32:31,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:31,092 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:32:31,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:32:31,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [528733094] [2020-07-20 11:32:31,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:32:31,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:32:31,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86152711] [2020-07-20 11:32:31,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:32:31,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:31,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:32:31,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:32:31,097 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 5 states. [2020-07-20 11:32:32,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:32,139 INFO L93 Difference]: Finished difference Result 842 states and 1218 transitions. [2020-07-20 11:32:32,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:32:32,140 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-07-20 11:32:32,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:32,148 INFO L225 Difference]: With dead ends: 842 [2020-07-20 11:32:32,149 INFO L226 Difference]: Without dead ends: 570 [2020-07-20 11:32:32,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:32:32,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-07-20 11:32:32,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 556. [2020-07-20 11:32:32,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-07-20 11:32:32,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 785 transitions. [2020-07-20 11:32:32,258 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 785 transitions. Word has length 140 [2020-07-20 11:32:32,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:32,258 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 785 transitions. [2020-07-20 11:32:32,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:32:32,259 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 785 transitions. [2020-07-20 11:32:32,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-07-20 11:32:32,269 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:32,273 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:32:32,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:32,487 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:32,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:32,488 INFO L82 PathProgramCache]: Analyzing trace with hash -188990609, now seen corresponding path program 1 times [2020-07-20 11:32:32,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:32,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729026934] [2020-07-20 11:32:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:32:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:32,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:32:32,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:32,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:32:32,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:32:32,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729026934] [2020-07-20 11:32:32,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:32:32,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:32:32,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766064826] [2020-07-20 11:32:32,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:32:32,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:32,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:32:32,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:32:32,665 INFO L87 Difference]: Start difference. First operand 556 states and 785 transitions. Second operand 3 states. [2020-07-20 11:32:33,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:33,282 INFO L93 Difference]: Finished difference Result 1376 states and 1960 transitions. [2020-07-20 11:32:33,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:32:33,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 141 [2020-07-20 11:32:33,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:33,292 INFO L225 Difference]: With dead ends: 1376 [2020-07-20 11:32:33,293 INFO L226 Difference]: Without dead ends: 826 [2020-07-20 11:32:33,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 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 11:32:33,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2020-07-20 11:32:33,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 826. [2020-07-20 11:32:33,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 826 states. [2020-07-20 11:32:33,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1131 transitions. [2020-07-20 11:32:33,350 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1131 transitions. Word has length 141 [2020-07-20 11:32:33,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:33,351 INFO L479 AbstractCegarLoop]: Abstraction has 826 states and 1131 transitions. [2020-07-20 11:32:33,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:32:33,352 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1131 transitions. [2020-07-20 11:32:33,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-07-20 11:32:33,355 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:33,355 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:33,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:33,570 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:33,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:33,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1244428519, now seen corresponding path program 1 times [2020-07-20 11:32:33,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:33,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120534122] [2020-07-20 11:32:33,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:32:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:33,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:32:33,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:33,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:32:33,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:32:33,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120534122] [2020-07-20 11:32:33,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:32:33,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:32:33,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940430515] [2020-07-20 11:32:33,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:32:33,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:33,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:32:33,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:32:33,731 INFO L87 Difference]: Start difference. First operand 826 states and 1131 transitions. Second operand 3 states. [2020-07-20 11:32:34,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:34,429 INFO L93 Difference]: Finished difference Result 2053 states and 2864 transitions. [2020-07-20 11:32:34,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:32:34,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 145 [2020-07-20 11:32:34,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:34,442 INFO L225 Difference]: With dead ends: 2053 [2020-07-20 11:32:34,442 INFO L226 Difference]: Without dead ends: 1233 [2020-07-20 11:32:34,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 143 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 11:32:34,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-07-20 11:32:34,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1233. [2020-07-20 11:32:34,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1233 states. [2020-07-20 11:32:34,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1630 transitions. [2020-07-20 11:32:34,489 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1630 transitions. Word has length 145 [2020-07-20 11:32:34,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:34,490 INFO L479 AbstractCegarLoop]: Abstraction has 1233 states and 1630 transitions. [2020-07-20 11:32:34,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:32:34,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1630 transitions. [2020-07-20 11:32:34,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-20 11:32:34,496 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:34,496 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:32:34,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:34,710 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:34,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:34,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1634381946, now seen corresponding path program 1 times [2020-07-20 11:32:34,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:34,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914081970] [2020-07-20 11:32:34,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:32:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:34,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:32:34,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:34,849 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:32:34,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:32:34,939 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:32:34,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914081970] [2020-07-20 11:32:34,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:32:34,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-20 11:32:34,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585564116] [2020-07-20 11:32:34,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 11:32:34,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:34,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 11:32:34,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:32:34,942 INFO L87 Difference]: Start difference. First operand 1233 states and 1630 transitions. Second operand 8 states. [2020-07-20 11:32:36,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:36,776 INFO L93 Difference]: Finished difference Result 4071 states and 5744 transitions. [2020-07-20 11:32:36,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 11:32:36,777 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 157 [2020-07-20 11:32:36,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:36,800 INFO L225 Difference]: With dead ends: 4071 [2020-07-20 11:32:36,800 INFO L226 Difference]: Without dead ends: 2844 [2020-07-20 11:32:36,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-20 11:32:36,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2020-07-20 11:32:36,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 2347. [2020-07-20 11:32:36,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2347 states. [2020-07-20 11:32:36,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 3031 transitions. [2020-07-20 11:32:36,935 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 3031 transitions. Word has length 157 [2020-07-20 11:32:36,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:36,936 INFO L479 AbstractCegarLoop]: Abstraction has 2347 states and 3031 transitions. [2020-07-20 11:32:36,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 11:32:36,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 3031 transitions. [2020-07-20 11:32:36,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-07-20 11:32:36,946 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:36,946 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:37,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:37,160 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:37,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:37,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1425842974, now seen corresponding path program 1 times [2020-07-20 11:32:37,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:37,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724375174] [2020-07-20 11:32:37,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:32:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:37,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:32:37,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 11:32:37,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:32:37,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724375174] [2020-07-20 11:32:37,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:32:37,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:32:37,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296468760] [2020-07-20 11:32:37,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:32:37,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:37,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:32:37,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:32:37,391 INFO L87 Difference]: Start difference. First operand 2347 states and 3031 transitions. Second operand 3 states. [2020-07-20 11:32:37,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:37,974 INFO L93 Difference]: Finished difference Result 6459 states and 8539 transitions. [2020-07-20 11:32:37,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:32:37,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2020-07-20 11:32:37,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:37,996 INFO L225 Difference]: With dead ends: 6459 [2020-07-20 11:32:37,996 INFO L226 Difference]: Without dead ends: 4122 [2020-07-20 11:32:38,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 162 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 11:32:38,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2020-07-20 11:32:38,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 3580. [2020-07-20 11:32:38,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3580 states. [2020-07-20 11:32:38,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 4705 transitions. [2020-07-20 11:32:38,109 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 4705 transitions. Word has length 164 [2020-07-20 11:32:38,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:38,109 INFO L479 AbstractCegarLoop]: Abstraction has 3580 states and 4705 transitions. [2020-07-20 11:32:38,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:32:38,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 4705 transitions. [2020-07-20 11:32:38,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-07-20 11:32:38,122 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:38,122 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:38,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:38,337 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:38,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:38,338 INFO L82 PathProgramCache]: Analyzing trace with hash 218520565, now seen corresponding path program 1 times [2020-07-20 11:32:38,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:38,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860561579] [2020-07-20 11:32:38,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:32:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:38,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:32:38,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:38,496 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 11:32:38,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:32:38,625 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 11:32:38,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860561579] [2020-07-20 11:32:38,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:32:38,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 11:32:38,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019499736] [2020-07-20 11:32:38,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:32:38,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:38,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:32:38,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:32:38,628 INFO L87 Difference]: Start difference. First operand 3580 states and 4705 transitions. Second operand 6 states. [2020-07-20 11:32:39,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:39,443 INFO L93 Difference]: Finished difference Result 7462 states and 9817 transitions. [2020-07-20 11:32:39,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:32:39,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-07-20 11:32:39,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:39,467 INFO L225 Difference]: With dead ends: 7462 [2020-07-20 11:32:39,468 INFO L226 Difference]: Without dead ends: 3892 [2020-07-20 11:32:39,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 358 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:32:39,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2020-07-20 11:32:39,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 2929. [2020-07-20 11:32:39,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2929 states. [2020-07-20 11:32:39,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 3765 transitions. [2020-07-20 11:32:39,577 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 3765 transitions. Word has length 181 [2020-07-20 11:32:39,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:39,577 INFO L479 AbstractCegarLoop]: Abstraction has 2929 states and 3765 transitions. [2020-07-20 11:32:39,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:32:39,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 3765 transitions. [2020-07-20 11:32:39,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-07-20 11:32:39,587 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:39,588 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:39,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:39,801 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:39,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:39,801 INFO L82 PathProgramCache]: Analyzing trace with hash -149619931, now seen corresponding path program 1 times [2020-07-20 11:32:39,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:39,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96090325] [2020-07-20 11:32:39,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:32:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:39,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:32:39,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-07-20 11:32:39,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:32:39,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96090325] [2020-07-20 11:32:39,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:32:39,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:32:39,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810297906] [2020-07-20 11:32:39,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:32:39,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:39,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:32:39,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:32:39,968 INFO L87 Difference]: Start difference. First operand 2929 states and 3765 transitions. Second operand 3 states. [2020-07-20 11:32:40,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:40,504 INFO L93 Difference]: Finished difference Result 5034 states and 6470 transitions. [2020-07-20 11:32:40,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:32:40,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2020-07-20 11:32:40,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:40,512 INFO L225 Difference]: With dead ends: 5034 [2020-07-20 11:32:40,513 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:32:40,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 180 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 11:32:40,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:32:40,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:32:40,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:32:40,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:32:40,527 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 182 [2020-07-20 11:32:40,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:40,527 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:32:40,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:32:40,527 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:32:40,527 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:32:40,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:40,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:32:41,968 WARN L193 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2020-07-20 11:32:42,149 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-07-20 11:32:42,320 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-07-20 11:32:42,323 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:32:42,324 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a8~0 |old(~a8~0)|) (<= ~a16~0 |old(~a16~0)|) (<= |old(~a16~0)| ~a16~0)) [2020-07-20 11:32:42,324 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:32:42,324 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-20 11:32:42,324 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-20 11:32:42,324 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,324 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,325 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,325 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,325 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,325 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,325 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-20 11:32:42,325 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-20 11:32:42,325 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-20 11:32:42,325 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-20 11:32:42,326 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-20 11:32:42,326 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-20 11:32:42,326 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-20 11:32:42,326 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-20 11:32:42,326 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-20 11:32:42,326 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-20 11:32:42,327 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,327 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,327 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,327 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,327 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,327 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,327 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-20 11:32:42,328 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-20 11:32:42,328 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-20 11:32:42,328 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-20 11:32:42,328 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-20 11:32:42,328 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-20 11:32:42,328 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-20 11:32:42,328 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-20 11:32:42,328 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-20 11:32:42,329 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-20 11:32:42,329 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-20 11:32:42,329 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 548) no Hoare annotation was computed. [2020-07-20 11:32:42,329 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-20 11:32:42,329 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-20 11:32:42,329 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-20 11:32:42,330 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-20 11:32:42,330 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,330 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,330 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,330 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,330 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,330 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-20 11:32:42,330 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-20 11:32:42,331 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-20 11:32:42,331 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-20 11:32:42,331 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-20 11:32:42,331 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-20 11:32:42,331 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-20 11:32:42,331 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-20 11:32:42,331 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-20 11:32:42,331 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,331 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,331 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,331 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,331 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,332 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-20 11:32:42,332 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-20 11:32:42,332 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-20 11:32:42,332 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-20 11:32:42,332 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-20 11:32:42,332 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-20 11:32:42,332 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-20 11:32:42,332 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-20 11:32:42,332 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-20 11:32:42,332 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-20 11:32:42,333 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-20 11:32:42,333 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-20 11:32:42,333 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-20 11:32:42,333 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,333 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,333 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,333 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,333 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,333 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-20 11:32:42,333 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-20 11:32:42,333 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-20 11:32:42,333 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-20 11:32:42,333 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-20 11:32:42,334 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-20 11:32:42,334 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-20 11:32:42,334 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-20 11:32:42,334 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-20 11:32:42,334 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,334 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,334 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,334 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,334 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,334 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,334 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-20 11:32:42,334 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,335 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-20 11:32:42,335 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-20 11:32:42,335 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-20 11:32:42,335 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-20 11:32:42,335 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-20 11:32:42,335 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-20 11:32:42,335 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-20 11:32:42,335 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-20 11:32:42,335 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-20 11:32:42,335 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-20 11:32:42,335 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-20 11:32:42,335 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-20 11:32:42,335 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-20 11:32:42,336 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,336 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,336 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,336 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,336 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,336 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-20 11:32:42,336 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-20 11:32:42,336 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-20 11:32:42,336 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-20 11:32:42,336 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-20 11:32:42,336 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-20 11:32:42,336 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-20 11:32:42,336 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-20 11:32:42,337 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,337 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,337 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,337 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,337 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,337 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-20 11:32:42,337 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-20 11:32:42,337 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-20 11:32:42,337 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-20 11:32:42,337 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-20 11:32:42,338 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-20 11:32:42,338 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-20 11:32:42,338 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-20 11:32:42,338 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-20 11:32:42,338 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-20 11:32:42,338 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse5 (not (<= |old(~a21~0)| 0))) (.cse4 (<= ~a21~0 0)) (.cse0 (not (<= 15 |old(~a8~0)|))) (.cse8 (not (<= |old(~a16~0)| 4))) (.cse7 (not (<= |old(~a17~0)| 0))) (.cse9 (<= ~a17~0 0)) (.cse10 (not (<= |old(~a16~0)| 5))) (.cse12 (not (<= |old(~a7~0)| 0))) (.cse6 (not (<= |old(~a8~0)| 13))) (.cse1 (<= ~a8~0 |old(~a8~0)|)) (.cse2 (<= ~a16~0 |old(~a16~0)|)) (.cse3 (<= |old(~a16~0)| ~a16~0)) (.cse11 (<= ~a7~0 0))) (and (or .cse0 (and .cse1 .cse2 .cse3 (<= 15 ~a8~0))) (or .cse4 (and (or .cse5 .cse6 .cse7) (or .cse5 .cse6 .cse8))) (or .cse0 .cse9 .cse7) (or .cse5 .cse10 .cse6 (not (<= 5 |old(~a16~0)|)) (and .cse1 .cse4 (<= ~a16~0 5) (<= 5 ~a16~0))) (or .cse0 .cse11 .cse12) (or (and .cse1 .cse2 (<= ~a8~0 13) .cse3 (<= ~a16~0 4)) (and (or .cse6 .cse8) (or (and .cse10 .cse6) .cse7)) (and .cse1 .cse2 .cse3 .cse9)) (or (and (or .cse12 .cse10) (or .cse12 .cse6)) (and .cse1 .cse2 .cse3 .cse11)))) [2020-07-20 11:32:42,339 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-20 11:32:42,339 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,339 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,339 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,339 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,339 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-20 11:32:42,339 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,339 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,339 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-20 11:32:42,340 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-20 11:32:42,340 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-20 11:32:42,340 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-20 11:32:42,340 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-20 11:32:42,340 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-20 11:32:42,340 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-20 11:32:42,340 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-20 11:32:42,340 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-20 11:32:42,340 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-20 11:32:42,340 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-20 11:32:42,341 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-20 11:32:42,341 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,341 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,341 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,341 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,341 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,341 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-20 11:32:42,341 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,342 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-20 11:32:42,342 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-20 11:32:42,342 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-20 11:32:42,342 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-20 11:32:42,342 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-20 11:32:42,342 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-20 11:32:42,342 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-20 11:32:42,342 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-20 11:32:42,342 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-20 11:32:42,342 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-20 11:32:42,342 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-20 11:32:42,343 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-20 11:32:42,343 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-20 11:32:42,343 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-20 11:32:42,343 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,343 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,343 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,343 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,343 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,343 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:42,343 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-20 11:32:42,343 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-20 11:32:42,344 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-20 11:32:42,344 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-20 11:32:42,344 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-20 11:32:42,344 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-20 11:32:42,344 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-20 11:32:42,344 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-20 11:32:42,344 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-20 11:32:42,344 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-20 11:32:42,344 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:32:42,345 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (<= ~a16~0 5) (<= 15 ~a8~0) (<= 5 ~a16~0)) [2020-07-20 11:32:42,345 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:32:42,345 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:32:42,345 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (<= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (not (<= 5 |old(~a16~0)|)) (and (<= ~a8~0 |old(~a8~0)|) (<= ~a7~0 0) (<= ~a16~0 5) (<= 15 ~a8~0) (<= 5 ~a16~0))) [2020-07-20 11:32:42,345 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-20 11:32:42,345 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse1 (<= ~a16~0 5)) (.cse0 (<= ~a8~0 13)) (.cse2 (<= ~a7~0 0))) (or (not (<= 15 |old(~a8~0)|)) (and .cse0 (<= ~a16~0 4)) (and .cse0 (<= ~a21~0 0) .cse1) (not (<= |old(~a7~0)| 0)) (<= 15 ~a8~0) (and .cse2 .cse1) (not (<= |old(~a16~0)| 5)) (and (<= ~a17~0 0) (or .cse0 .cse1)) (not (<= 5 |old(~a16~0)|)) (and .cse0 .cse2))) [2020-07-20 11:32:42,345 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-20 11:32:42,345 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-20 11:32:42,346 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse1 (<= ~a16~0 5)) (.cse0 (<= ~a8~0 13)) (.cse2 (<= ~a7~0 0))) (or (not (<= 15 |old(~a8~0)|)) (and .cse0 (<= ~a16~0 4)) (and .cse0 (<= ~a21~0 0) .cse1) (not (<= |old(~a7~0)| 0)) (<= 15 ~a8~0) (and .cse2 .cse1) (not (<= |old(~a16~0)| 5)) (and (<= ~a17~0 0) (or .cse0 .cse1)) (not (<= 5 |old(~a16~0)|)) (and .cse0 .cse2))) [2020-07-20 11:32:42,346 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-20 11:32:42,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:32:42 BoogieIcfgContainer [2020-07-20 11:32:42,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:32:42,392 INFO L168 Benchmark]: Toolchain (without parser) took 15834.53 ms. Allocated memory was 135.3 MB in the beginning and 478.2 MB in the end (delta: 342.9 MB). Free memory was 98.7 MB in the beginning and 434.8 MB in the end (delta: -336.0 MB). Peak memory consumption was 310.2 MB. Max. memory is 7.1 GB. [2020-07-20 11:32:42,393 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 135.3 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-20 11:32:42,394 INFO L168 Benchmark]: CACSL2BoogieTranslator took 783.74 ms. Allocated memory was 135.3 MB in the beginning and 202.4 MB in the end (delta: 67.1 MB). Free memory was 98.3 MB in the beginning and 168.5 MB in the end (delta: -70.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. [2020-07-20 11:32:42,399 INFO L168 Benchmark]: Boogie Preprocessor took 169.79 ms. Allocated memory is still 202.4 MB. Free memory was 168.5 MB in the beginning and 164.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:32:42,400 INFO L168 Benchmark]: RCFGBuilder took 1534.15 ms. Allocated memory was 202.4 MB in the beginning and 229.1 MB in the end (delta: 26.7 MB). Free memory was 164.0 MB in the beginning and 177.5 MB in the end (delta: -13.6 MB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:32:42,402 INFO L168 Benchmark]: TraceAbstraction took 13335.96 ms. Allocated memory was 229.1 MB in the beginning and 478.2 MB in the end (delta: 249.0 MB). Free memory was 177.5 MB in the beginning and 434.8 MB in the end (delta: -257.2 MB). Peak memory consumption was 295.1 MB. Max. memory is 7.1 GB. [2020-07-20 11:32:42,414 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 135.3 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 783.74 ms. Allocated memory was 135.3 MB in the beginning and 202.4 MB in the end (delta: 67.1 MB). Free memory was 98.3 MB in the beginning and 168.5 MB in the end (delta: -70.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 169.79 ms. Allocated memory is still 202.4 MB. Free memory was 168.5 MB in the beginning and 164.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1534.15 ms. Allocated memory was 202.4 MB in the beginning and 229.1 MB in the end (delta: 26.7 MB). Free memory was 164.0 MB in the beginning and 177.5 MB in the end (delta: -13.6 MB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13335.96 ms. Allocated memory was 229.1 MB in the beginning and 478.2 MB in the end (delta: 249.0 MB). Free memory was 177.5 MB in the beginning and 434.8 MB in the end (delta: -257.2 MB). Peak memory consumption was 295.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 548]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 583]: Loop Invariant Derived loop invariant: ((((((((!(15 <= \old(a8)) || (a8 <= 13 && a16 <= 4)) || ((a8 <= 13 && a21 <= 0) && a16 <= 5)) || !(\old(a7) <= 0)) || 15 <= a8) || (a7 <= 0 && a16 <= 5)) || !(\old(a16) <= 5)) || (a17 <= 0 && (a8 <= 13 || a16 <= 5))) || !(5 <= \old(a16))) || (a8 <= 13 && a7 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.6s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 816 SDtfs, 2115 SDslu, 207 SDs, 0 SdLazy, 4326 SolverSat, 812 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1587 GetRequests, 1557 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3580occurred 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: 0.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 2016 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 108 PreInvPairs, 152 NumberOfFragments, 372 HoareAnnotationTreeSize, 108 FomulaSimplifications, 3549 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 7 FomulaSimplificationsInter, 1359 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1240 NumberOfCodeBlocks, 1240 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1568 ConstructedInterpolants, 0 QuantifiedInterpolants, 482616 SizeOfPredicates, 13 NumberOfNonLiveVariables, 3378 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 379/387 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...