/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:54:23,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:54:23,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:54:23,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:54:23,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:54:23,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:54:23,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:54:23,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:54:23,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:54:23,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:54:23,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:54:23,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:54:23,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:54:23,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:54:23,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:54:23,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:54:23,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:54:23,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:54:23,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:54:23,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:54:23,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:54:23,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:54:23,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:54:23,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:54:23,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:54:23,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:54:23,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:54:23,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:54:23,254 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 22:54:23,289 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:54:23,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:54:23,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:54:23,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:54:23,292 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:54:23,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:54:23,292 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:54:23,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:54:23,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:54:23,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:54:23,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:54:23,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:54:23,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:54:23,295 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:54:23,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:54:23,296 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:54:23,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:54:23,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:54:23,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:54:23,297 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:54:23,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:54:23,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:54:23,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:54:23,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:54:23,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:54:23,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:54:23,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:23,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:54:23,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:54:23,299 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 22:54:23,590 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:54:23,607 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:54:23,611 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:54:23,613 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:54:23,613 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:54:23,615 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label04.c [2020-07-21 22:54:23,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8f169bb6/6ee0994ca37d4a36b7bb49486384fa2a/FLAGcef258799 [2020-07-21 22:54:24,276 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:54:24,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label04.c [2020-07-21 22:54:24,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8f169bb6/6ee0994ca37d4a36b7bb49486384fa2a/FLAGcef258799 [2020-07-21 22:54:24,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8f169bb6/6ee0994ca37d4a36b7bb49486384fa2a [2020-07-21 22:54:24,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:54:24,507 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:54:24,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:54:24,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:54:24,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:54:24,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:54:24" (1/1) ... [2020-07-21 22:54:24,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c24edc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:54:24, skipping insertion in model container [2020-07-21 22:54:24,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:54:24" (1/1) ... [2020-07-21 22:54:24,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:54:24,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:54:24,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:54:25,001 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:54:25,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:54:25,273 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:54:25,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:54:25 WrapperNode [2020-07-21 22:54:25,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:54:25,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:54:25,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:54:25,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:54:25,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:54:25" (1/1) ... [2020-07-21 22:54:25,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:54:25" (1/1) ... [2020-07-21 22:54:25,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:54:25" (1/1) ... [2020-07-21 22:54:25,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:54:25" (1/1) ... [2020-07-21 22:54:25,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:54:25" (1/1) ... [2020-07-21 22:54:25,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:54:25" (1/1) ... [2020-07-21 22:54:25,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:54:25" (1/1) ... [2020-07-21 22:54:25,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:54:25,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:54:25,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:54:25,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:54:25,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:54:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:54:25,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:54:25,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:54:25,480 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 22:54:25,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:54:25,481 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 22:54:25,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:54:25,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:54:25,483 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 22:54:25,483 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:54:25,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:54:25,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:54:26,661 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:54:26,661 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 22:54:26,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:54:26 BoogieIcfgContainer [2020-07-21 22:54:26,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:54:26,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:54:26,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:54:26,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:54:26,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:54:24" (1/3) ... [2020-07-21 22:54:26,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1b3b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:54:26, skipping insertion in model container [2020-07-21 22:54:26,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:54:25" (2/3) ... [2020-07-21 22:54:26,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a1b3b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:54:26, skipping insertion in model container [2020-07-21 22:54:26,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:54:26" (3/3) ... [2020-07-21 22:54:26,684 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label04.c [2020-07-21 22:54:26,695 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:54:26,709 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:54:26,726 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:54:26,761 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:54:26,762 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:54:26,762 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:54:26,762 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:54:26,762 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:54:26,763 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:54:26,763 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:54:26,763 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:54:26,791 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2020-07-21 22:54:26,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-07-21 22:54:26,813 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:54:26,814 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] [2020-07-21 22:54:26,815 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:54:26,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:54:26,822 INFO L82 PathProgramCache]: Analyzing trace with hash 116556406, now seen corresponding path program 1 times [2020-07-21 22:54:26,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:54:26,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088875924] [2020-07-21 22:54:26,830 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:27,022 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:54:27,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:54:27,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 52 conjunts are in the unsatisfiable core [2020-07-21 22:54:27,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:54:27,566 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:54:27,573 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 22:54:27,573 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 22:54:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:54:27,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:54:27,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088875924] [2020-07-21 22:54:27,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:54:27,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-21 22:54:27,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137348969] [2020-07-21 22:54:27,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 22:54:27,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:54:27,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 22:54:27,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-07-21 22:54:27,718 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 10 states. [2020-07-21 22:54:29,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:54:29,082 INFO L93 Difference]: Finished difference Result 527 states and 878 transitions. [2020-07-21 22:54:29,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:54:29,084 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 112 [2020-07-21 22:54:29,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:54:29,102 INFO L225 Difference]: With dead ends: 527 [2020-07-21 22:54:29,102 INFO L226 Difference]: Without dead ends: 229 [2020-07-21 22:54:29,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-07-21 22:54:29,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-07-21 22:54:29,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2020-07-21 22:54:29,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-07-21 22:54:29,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 319 transitions. [2020-07-21 22:54:29,191 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 319 transitions. Word has length 112 [2020-07-21 22:54:29,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:54:29,191 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 319 transitions. [2020-07-21 22:54:29,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 22:54:29,192 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 319 transitions. [2020-07-21 22:54:29,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-07-21 22:54:29,197 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:54:29,198 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-21 22:54:29,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:29,399 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:54:29,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:54:29,400 INFO L82 PathProgramCache]: Analyzing trace with hash -360103577, now seen corresponding path program 1 times [2020-07-21 22:54:29,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:54:29,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287436859] [2020-07-21 22:54:29,402 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:29,514 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:54:29,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:54:29,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 37 conjunts are in the unsatisfiable core [2020-07-21 22:54:29,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:54:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:54:30,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:54:30,449 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 6 conjuncts [2020-07-21 22:54:30,451 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 22:54:30,452 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 4 conjuncts [2020-07-21 22:54:30,457 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 3 conjuncts [2020-07-21 22:54:30,458 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:54:30,486 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 6, 5, 1] term [2020-07-21 22:54:30,488 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 22:54:30,528 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:54:30,591 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:54:30,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:54:30,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287436859] [2020-07-21 22:54:30,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:54:30,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2020-07-21 22:54:30,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075549278] [2020-07-21 22:54:30,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-21 22:54:30,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:54:30,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-21 22:54:30,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-07-21 22:54:30,705 INFO L87 Difference]: Start difference. First operand 229 states and 319 transitions. Second operand 21 states. [2020-07-21 22:54:31,723 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-07-21 22:54:32,828 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-07-21 22:54:34,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:54:34,330 INFO L93 Difference]: Finished difference Result 738 states and 1083 transitions. [2020-07-21 22:54:34,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-07-21 22:54:34,332 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 121 [2020-07-21 22:54:34,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:54:34,345 INFO L225 Difference]: With dead ends: 738 [2020-07-21 22:54:34,345 INFO L226 Difference]: Without dead ends: 423 [2020-07-21 22:54:34,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 219 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=516, Invalid=1290, Unknown=0, NotChecked=0, Total=1806 [2020-07-21 22:54:34,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-07-21 22:54:34,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 393. [2020-07-21 22:54:34,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-07-21 22:54:34,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 533 transitions. [2020-07-21 22:54:34,418 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 533 transitions. Word has length 121 [2020-07-21 22:54:34,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:54:34,418 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 533 transitions. [2020-07-21 22:54:34,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-21 22:54:34,420 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 533 transitions. [2020-07-21 22:54:34,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-07-21 22:54:34,429 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:54:34,430 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-21 22:54:34,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:34,631 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:54:34,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:54:34,632 INFO L82 PathProgramCache]: Analyzing trace with hash 2056155642, now seen corresponding path program 1 times [2020-07-21 22:54:34,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:54:34,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152175455] [2020-07-21 22:54:34,634 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:34,735 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 22:54:34,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:54:34,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 22:54:34,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:54:34,762 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 22:54:34,762 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:54:34,790 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:54:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:54:34,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:54:34,891 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:54:34,893 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:54:34,917 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:54:34,972 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:54:34,978 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:54:34,996 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:54:34,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152175455] [2020-07-21 22:54:34,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:54:34,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:54:34,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167302705] [2020-07-21 22:54:34,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:54:34,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:54:34,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:54:34,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:54:34,999 INFO L87 Difference]: Start difference. First operand 393 states and 533 transitions. Second operand 7 states. [2020-07-21 22:54:36,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:54:36,770 INFO L93 Difference]: Finished difference Result 1434 states and 2028 transitions. [2020-07-21 22:54:36,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-21 22:54:36,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-07-21 22:54:36,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:54:36,779 INFO L225 Difference]: With dead ends: 1434 [2020-07-21 22:54:36,779 INFO L226 Difference]: Without dead ends: 1047 [2020-07-21 22:54:36,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 265 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2020-07-21 22:54:36,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2020-07-21 22:54:36,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1015. [2020-07-21 22:54:36,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-07-21 22:54:36,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1272 transitions. [2020-07-21 22:54:36,828 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1272 transitions. Word has length 133 [2020-07-21 22:54:36,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:54:36,829 INFO L479 AbstractCegarLoop]: Abstraction has 1015 states and 1272 transitions. [2020-07-21 22:54:36,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:54:36,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1272 transitions. [2020-07-21 22:54:36,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-07-21 22:54:36,833 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:54:36,834 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 22:54:37,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:37,048 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:54:37,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:54:37,049 INFO L82 PathProgramCache]: Analyzing trace with hash 551640631, now seen corresponding path program 1 times [2020-07-21 22:54:37,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:54:37,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224316365] [2020-07-21 22:54:37,051 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:37,154 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:54:37,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:54:37,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:54:37,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:54:37,211 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 22:54:37,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:54:37,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224316365] [2020-07-21 22:54:37,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:54:37,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:54:37,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808669651] [2020-07-21 22:54:37,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:54:37,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:54:37,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:54:37,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:54:37,214 INFO L87 Difference]: Start difference. First operand 1015 states and 1272 transitions. Second operand 3 states. [2020-07-21 22:54:37,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:54:37,802 INFO L93 Difference]: Finished difference Result 2323 states and 2938 transitions. [2020-07-21 22:54:37,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:54:37,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2020-07-21 22:54:37,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:54:37,817 INFO L225 Difference]: With dead ends: 2323 [2020-07-21 22:54:37,817 INFO L226 Difference]: Without dead ends: 1314 [2020-07-21 22:54:37,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:54:37,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2020-07-21 22:54:37,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1314. [2020-07-21 22:54:37,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-07-21 22:54:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1639 transitions. [2020-07-21 22:54:37,889 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1639 transitions. Word has length 147 [2020-07-21 22:54:37,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:54:37,890 INFO L479 AbstractCegarLoop]: Abstraction has 1314 states and 1639 transitions. [2020-07-21 22:54:37,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:54:37,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1639 transitions. [2020-07-21 22:54:37,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-07-21 22:54:37,898 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:54:37,899 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:54:38,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:38,113 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:54:38,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:54:38,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1443602449, now seen corresponding path program 1 times [2020-07-21 22:54:38,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:54:38,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800711494] [2020-07-21 22:54:38,115 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:38,211 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:54:38,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:54:38,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:54:38,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:54:38,245 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-21 22:54:38,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:54:38,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800711494] [2020-07-21 22:54:38,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:54:38,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:54:38,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988898564] [2020-07-21 22:54:38,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:54:38,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:54:38,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:54:38,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:54:38,248 INFO L87 Difference]: Start difference. First operand 1314 states and 1639 transitions. Second operand 3 states. [2020-07-21 22:54:38,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:54:38,989 INFO L93 Difference]: Finished difference Result 3498 states and 4468 transitions. [2020-07-21 22:54:38,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:54:38,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2020-07-21 22:54:38,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:54:39,003 INFO L225 Difference]: With dead ends: 3498 [2020-07-21 22:54:39,004 INFO L226 Difference]: Without dead ends: 2190 [2020-07-21 22:54:39,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:54:39,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2020-07-21 22:54:39,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 2043. [2020-07-21 22:54:39,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2043 states. [2020-07-21 22:54:39,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 2601 transitions. [2020-07-21 22:54:39,075 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 2601 transitions. Word has length 154 [2020-07-21 22:54:39,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:54:39,076 INFO L479 AbstractCegarLoop]: Abstraction has 2043 states and 2601 transitions. [2020-07-21 22:54:39,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:54:39,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 2601 transitions. [2020-07-21 22:54:39,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-07-21 22:54:39,083 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:54:39,083 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:54:39,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:39,297 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:54:39,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:54:39,297 INFO L82 PathProgramCache]: Analyzing trace with hash -578387322, now seen corresponding path program 1 times [2020-07-21 22:54:39,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:54:39,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296120523] [2020-07-21 22:54:39,298 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:39,406 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:54:39,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:54:39,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 22:54:39,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:54:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:54:39,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:54:39,516 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:54:39,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296120523] [2020-07-21 22:54:39,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:54:39,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 22:54:39,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379079578] [2020-07-21 22:54:39,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 22:54:39,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:54:39,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 22:54:39,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:54:39,519 INFO L87 Difference]: Start difference. First operand 2043 states and 2601 transitions. Second operand 6 states. [2020-07-21 22:54:40,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:54:40,363 INFO L93 Difference]: Finished difference Result 5186 states and 7186 transitions. [2020-07-21 22:54:40,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:54:40,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-07-21 22:54:40,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:54:40,383 INFO L225 Difference]: With dead ends: 5186 [2020-07-21 22:54:40,383 INFO L226 Difference]: Without dead ends: 3149 [2020-07-21 22:54:40,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-21 22:54:40,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3149 states. [2020-07-21 22:54:40,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3149 to 2805. [2020-07-21 22:54:40,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2805 states. [2020-07-21 22:54:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3617 transitions. [2020-07-21 22:54:40,478 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3617 transitions. Word has length 172 [2020-07-21 22:54:40,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:54:40,479 INFO L479 AbstractCegarLoop]: Abstraction has 2805 states and 3617 transitions. [2020-07-21 22:54:40,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 22:54:40,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3617 transitions. [2020-07-21 22:54:40,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-07-21 22:54:40,487 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:54:40,487 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:54:40,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:40,701 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:54:40,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:54:40,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1603998347, now seen corresponding path program 1 times [2020-07-21 22:54:40,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:54:40,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121813286] [2020-07-21 22:54:40,703 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:40,796 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:54:40,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:54:40,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:54:40,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:54:40,842 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 22:54:40,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:54:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 22:54:40,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121813286] [2020-07-21 22:54:40,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:54:40,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 22:54:40,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616874022] [2020-07-21 22:54:40,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 22:54:40,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:54:40,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 22:54:40,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 22:54:40,921 INFO L87 Difference]: Start difference. First operand 2805 states and 3617 transitions. Second operand 6 states. [2020-07-21 22:54:42,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:54:42,009 INFO L93 Difference]: Finished difference Result 6061 states and 7821 transitions. [2020-07-21 22:54:42,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 22:54:42,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2020-07-21 22:54:42,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:54:42,022 INFO L225 Difference]: With dead ends: 6061 [2020-07-21 22:54:42,022 INFO L226 Difference]: Without dead ends: 2525 [2020-07-21 22:54:42,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 360 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 22:54:42,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2525 states. [2020-07-21 22:54:42,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2525 to 2374. [2020-07-21 22:54:42,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2374 states. [2020-07-21 22:54:42,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 2905 transitions. [2020-07-21 22:54:42,091 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 2905 transitions. Word has length 182 [2020-07-21 22:54:42,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:54:42,091 INFO L479 AbstractCegarLoop]: Abstraction has 2374 states and 2905 transitions. [2020-07-21 22:54:42,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 22:54:42,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 2905 transitions. [2020-07-21 22:54:42,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-07-21 22:54:42,098 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:54:42,099 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 22:54:42,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:42,312 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:54:42,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:54:42,312 INFO L82 PathProgramCache]: Analyzing trace with hash 252543852, now seen corresponding path program 1 times [2020-07-21 22:54:42,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:54:42,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346581813] [2020-07-21 22:54:42,313 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:42,406 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:54:42,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:54:42,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:54:42,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:54:42,446 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:54:42,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:54:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:54:42,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346581813] [2020-07-21 22:54:42,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:54:42,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:54:42,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147813844] [2020-07-21 22:54:42,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:54:42,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:54:42,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:54:42,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:54:42,528 INFO L87 Difference]: Start difference. First operand 2374 states and 2905 transitions. Second operand 7 states. [2020-07-21 22:54:43,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:54:43,755 INFO L93 Difference]: Finished difference Result 4897 states and 6006 transitions. [2020-07-21 22:54:43,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 22:54:43,761 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-07-21 22:54:43,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:54:43,770 INFO L225 Difference]: With dead ends: 4897 [2020-07-21 22:54:43,771 INFO L226 Difference]: Without dead ends: 2371 [2020-07-21 22:54:43,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 357 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 22:54:43,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-07-21 22:54:43,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2355. [2020-07-21 22:54:43,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2355 states. [2020-07-21 22:54:43,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 2625 transitions. [2020-07-21 22:54:43,830 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 2625 transitions. Word has length 181 [2020-07-21 22:54:43,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:54:43,831 INFO L479 AbstractCegarLoop]: Abstraction has 2355 states and 2625 transitions. [2020-07-21 22:54:43,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:54:43,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 2625 transitions. [2020-07-21 22:54:43,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-07-21 22:54:43,840 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:54:43,840 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 22:54:44,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:44,056 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:54:44,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:54:44,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1614354183, now seen corresponding path program 1 times [2020-07-21 22:54:44,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:54:44,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934530850] [2020-07-21 22:54:44,057 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:44,167 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:54:44,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:54:44,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 22:54:44,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:54:44,218 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-07-21 22:54:44,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:54:44,300 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 128 proven. 23 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-07-21 22:54:44,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934530850] [2020-07-21 22:54:44,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:54:44,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:54:44,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426902734] [2020-07-21 22:54:44,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:54:44,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:54:44,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:54:44,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:54:44,303 INFO L87 Difference]: Start difference. First operand 2355 states and 2625 transitions. Second operand 7 states. [2020-07-21 22:54:44,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:54:44,928 INFO L93 Difference]: Finished difference Result 4377 states and 4892 transitions. [2020-07-21 22:54:44,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:54:44,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-07-21 22:54:44,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:54:44,938 INFO L225 Difference]: With dead ends: 4377 [2020-07-21 22:54:44,938 INFO L226 Difference]: Without dead ends: 2028 [2020-07-21 22:54:44,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-07-21 22:54:44,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2020-07-21 22:54:44,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 1880. [2020-07-21 22:54:44,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1880 states. [2020-07-21 22:54:44,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 2060 transitions. [2020-07-21 22:54:44,980 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 2060 transitions. Word has length 212 [2020-07-21 22:54:44,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:54:44,981 INFO L479 AbstractCegarLoop]: Abstraction has 1880 states and 2060 transitions. [2020-07-21 22:54:44,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:54:44,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 2060 transitions. [2020-07-21 22:54:44,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-07-21 22:54:44,987 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:54:44,987 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:54:45,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:45,202 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:54:45,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:54:45,202 INFO L82 PathProgramCache]: Analyzing trace with hash -289838194, now seen corresponding path program 1 times [2020-07-21 22:54:45,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:54:45,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891022877] [2020-07-21 22:54:45,203 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:45,326 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:54:45,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:54:45,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 22:54:45,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:54:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-07-21 22:54:45,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:54:45,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891022877] [2020-07-21 22:54:45,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:54:45,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:54:45,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537675087] [2020-07-21 22:54:45,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:54:45,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:54:45,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:54:45,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:54:45,369 INFO L87 Difference]: Start difference. First operand 1880 states and 2060 transitions. Second operand 3 states. [2020-07-21 22:54:45,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:54:45,820 INFO L93 Difference]: Finished difference Result 3694 states and 4055 transitions. [2020-07-21 22:54:45,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:54:45,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2020-07-21 22:54:45,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:54:45,821 INFO L225 Difference]: With dead ends: 3694 [2020-07-21 22:54:45,821 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 22:54:45,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:54:45,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 22:54:45,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 22:54:45,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 22:54:45,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 22:54:45,828 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 218 [2020-07-21 22:54:45,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:54:45,828 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 22:54:45,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:54:45,829 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 22:54:45,829 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 22:54:46,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:54:46,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 22:54:46,426 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 114 [2020-07-21 22:54:46,579 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 125 [2020-07-21 22:54:47,657 WARN L193 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 98 [2020-07-21 22:54:48,126 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 52 [2020-07-21 22:54:48,616 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 52 [2020-07-21 22:54:48,620 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:54:48,621 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a28~0 |old(~a28~0)|) (= ~a17~0 |old(~a17~0)|) (= ~a19~0 |old(~a19~0)|) (or (<= ~a11~0 0) (< 0 |old(~a11~0)|) (not (= 1 ~a21~0))) (<= |old(~a28~0)| ~a28~0) (= ~a25~0 |old(~a25~0)|)) [2020-07-21 22:54:48,621 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:54:48,621 INFO L268 CegarLoopResult]: For program point L564-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,621 INFO L268 CegarLoopResult]: For program point L531-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,621 INFO L268 CegarLoopResult]: For program point L498-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,622 INFO L268 CegarLoopResult]: For program point L465-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,622 INFO L268 CegarLoopResult]: For program point L432-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,622 INFO L268 CegarLoopResult]: For program point L234(lines 234 413) no Hoare annotation was computed. [2020-07-21 22:54:48,622 INFO L268 CegarLoopResult]: For program point L69(lines 69 413) no Hoare annotation was computed. [2020-07-21 22:54:48,622 INFO L268 CegarLoopResult]: For program point L565(line 565) no Hoare annotation was computed. [2020-07-21 22:54:48,622 INFO L268 CegarLoopResult]: For program point L532(line 532) no Hoare annotation was computed. [2020-07-21 22:54:48,623 INFO L268 CegarLoopResult]: For program point L499(line 499) no Hoare annotation was computed. [2020-07-21 22:54:48,623 INFO L268 CegarLoopResult]: For program point L466(line 466) no Hoare annotation was computed. [2020-07-21 22:54:48,623 INFO L268 CegarLoopResult]: For program point L433(line 433) no Hoare annotation was computed. [2020-07-21 22:54:48,623 INFO L268 CegarLoopResult]: For program point L202(lines 202 413) no Hoare annotation was computed. [2020-07-21 22:54:48,623 INFO L268 CegarLoopResult]: For program point L169(lines 169 413) no Hoare annotation was computed. [2020-07-21 22:54:48,623 INFO L268 CegarLoopResult]: For program point L368(lines 368 413) no Hoare annotation was computed. [2020-07-21 22:54:48,623 INFO L268 CegarLoopResult]: For program point L203(lines 203 210) no Hoare annotation was computed. [2020-07-21 22:54:48,623 INFO L268 CegarLoopResult]: For program point L203-2(lines 203 210) no Hoare annotation was computed. [2020-07-21 22:54:48,623 INFO L268 CegarLoopResult]: For program point L38(lines 38 413) no Hoare annotation was computed. [2020-07-21 22:54:48,624 INFO L268 CegarLoopResult]: For program point L567-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,624 INFO L268 CegarLoopResult]: For program point L534-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,624 INFO L268 CegarLoopResult]: For program point L501-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,624 INFO L268 CegarLoopResult]: For program point L468-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,624 INFO L268 CegarLoopResult]: For program point L402(lines 402 413) no Hoare annotation was computed. [2020-07-21 22:54:48,624 INFO L268 CegarLoopResult]: For program point L435-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,624 INFO L268 CegarLoopResult]: For program point L237(lines 237 413) no Hoare annotation was computed. [2020-07-21 22:54:48,624 INFO L268 CegarLoopResult]: For program point L568(line 568) no Hoare annotation was computed. [2020-07-21 22:54:48,624 INFO L268 CegarLoopResult]: For program point L535(line 535) no Hoare annotation was computed. [2020-07-21 22:54:48,624 INFO L268 CegarLoopResult]: For program point L502(line 502) no Hoare annotation was computed. [2020-07-21 22:54:48,625 INFO L268 CegarLoopResult]: For program point L469(line 469) no Hoare annotation was computed. [2020-07-21 22:54:48,625 INFO L268 CegarLoopResult]: For program point L436(line 436) no Hoare annotation was computed. [2020-07-21 22:54:48,625 INFO L268 CegarLoopResult]: For program point L337(lines 337 413) no Hoare annotation was computed. [2020-07-21 22:54:48,625 INFO L268 CegarLoopResult]: For program point L238(lines 238 246) no Hoare annotation was computed. [2020-07-21 22:54:48,625 INFO L268 CegarLoopResult]: For program point L238-2(lines 238 246) no Hoare annotation was computed. [2020-07-21 22:54:48,625 INFO L268 CegarLoopResult]: For program point L139(lines 139 413) no Hoare annotation was computed. [2020-07-21 22:54:48,625 INFO L268 CegarLoopResult]: For program point L106(lines 106 413) no Hoare annotation was computed. [2020-07-21 22:54:48,625 INFO L268 CegarLoopResult]: For program point L404(lines 404 413) no Hoare annotation was computed. [2020-07-21 22:54:48,626 INFO L268 CegarLoopResult]: For program point L338(lines 338 347) no Hoare annotation was computed. [2020-07-21 22:54:48,626 INFO L268 CegarLoopResult]: For program point L338-2(lines 338 347) no Hoare annotation was computed. [2020-07-21 22:54:48,626 INFO L268 CegarLoopResult]: For program point L74(lines 74 413) no Hoare annotation was computed. [2020-07-21 22:54:48,626 INFO L268 CegarLoopResult]: For program point L570-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,626 INFO L268 CegarLoopResult]: For program point L537-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,626 INFO L268 CegarLoopResult]: For program point L504-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,626 INFO L268 CegarLoopResult]: For program point L471-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,626 INFO L268 CegarLoopResult]: For program point L438-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,627 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 490) no Hoare annotation was computed. [2020-07-21 22:54:48,627 INFO L268 CegarLoopResult]: For program point L75(lines 75 80) no Hoare annotation was computed. [2020-07-21 22:54:48,627 INFO L268 CegarLoopResult]: For program point L42(lines 42 413) no Hoare annotation was computed. [2020-07-21 22:54:48,627 INFO L268 CegarLoopResult]: For program point L75-2(lines 75 80) no Hoare annotation was computed. [2020-07-21 22:54:48,627 INFO L268 CegarLoopResult]: For program point L571(line 571) no Hoare annotation was computed. [2020-07-21 22:54:48,627 INFO L268 CegarLoopResult]: For program point L538(line 538) no Hoare annotation was computed. [2020-07-21 22:54:48,627 INFO L268 CegarLoopResult]: For program point L505(line 505) no Hoare annotation was computed. [2020-07-21 22:54:48,627 INFO L268 CegarLoopResult]: For program point L472(line 472) no Hoare annotation was computed. [2020-07-21 22:54:48,628 INFO L268 CegarLoopResult]: For program point L439(line 439) no Hoare annotation was computed. [2020-07-21 22:54:48,628 INFO L268 CegarLoopResult]: For program point L175(lines 175 413) no Hoare annotation was computed. [2020-07-21 22:54:48,628 INFO L268 CegarLoopResult]: For program point L407(lines 407 413) no Hoare annotation was computed. [2020-07-21 22:54:48,628 INFO L268 CegarLoopResult]: For program point L143(lines 143 413) no Hoare annotation was computed. [2020-07-21 22:54:48,628 INFO L268 CegarLoopResult]: For program point L573-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,628 INFO L268 CegarLoopResult]: For program point L540-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,628 INFO L268 CegarLoopResult]: For program point L507-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,628 INFO L268 CegarLoopResult]: For program point L474-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,629 INFO L268 CegarLoopResult]: For program point L441-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,629 INFO L268 CegarLoopResult]: For program point L375(lines 375 413) no Hoare annotation was computed. [2020-07-21 22:54:48,629 INFO L268 CegarLoopResult]: For program point L309(lines 309 413) no Hoare annotation was computed. [2020-07-21 22:54:48,629 INFO L268 CegarLoopResult]: For program point L276(lines 276 413) no Hoare annotation was computed. [2020-07-21 22:54:48,629 INFO L268 CegarLoopResult]: For program point L574(line 574) no Hoare annotation was computed. [2020-07-21 22:54:48,629 INFO L268 CegarLoopResult]: For program point L541(line 541) no Hoare annotation was computed. [2020-07-21 22:54:48,629 INFO L268 CegarLoopResult]: For program point L508(line 508) no Hoare annotation was computed. [2020-07-21 22:54:48,629 INFO L268 CegarLoopResult]: For program point L475(line 475) no Hoare annotation was computed. [2020-07-21 22:54:48,629 INFO L268 CegarLoopResult]: For program point L442(line 442) no Hoare annotation was computed. [2020-07-21 22:54:48,630 INFO L268 CegarLoopResult]: For program point L409(lines 409 413) no Hoare annotation was computed. [2020-07-21 22:54:48,630 INFO L268 CegarLoopResult]: For program point L212(lines 212 413) no Hoare annotation was computed. [2020-07-21 22:54:48,630 INFO L268 CegarLoopResult]: For program point L179(lines 179 413) no Hoare annotation was computed. [2020-07-21 22:54:48,630 INFO L268 CegarLoopResult]: For program point L113(lines 113 413) no Hoare annotation was computed. [2020-07-21 22:54:48,630 INFO L268 CegarLoopResult]: For program point L47(lines 47 413) no Hoare annotation was computed. [2020-07-21 22:54:48,630 INFO L268 CegarLoopResult]: For program point L576-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,630 INFO L268 CegarLoopResult]: For program point L543-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,630 INFO L268 CegarLoopResult]: For program point L510-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,630 INFO L268 CegarLoopResult]: For program point L477-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,631 INFO L268 CegarLoopResult]: For program point L444-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,631 INFO L268 CegarLoopResult]: For program point L378(lines 378 413) no Hoare annotation was computed. [2020-07-21 22:54:48,631 INFO L268 CegarLoopResult]: For program point L577(line 577) no Hoare annotation was computed. [2020-07-21 22:54:48,631 INFO L268 CegarLoopResult]: For program point L544(line 544) no Hoare annotation was computed. [2020-07-21 22:54:48,631 INFO L268 CegarLoopResult]: For program point L511(line 511) no Hoare annotation was computed. [2020-07-21 22:54:48,631 INFO L268 CegarLoopResult]: For program point L478(line 478) no Hoare annotation was computed. [2020-07-21 22:54:48,631 INFO L268 CegarLoopResult]: For program point L445(line 445) no Hoare annotation was computed. [2020-07-21 22:54:48,631 INFO L268 CegarLoopResult]: For program point L280(lines 280 413) no Hoare annotation was computed. [2020-07-21 22:54:48,631 INFO L268 CegarLoopResult]: For program point L148(lines 148 413) no Hoare annotation was computed. [2020-07-21 22:54:48,632 INFO L268 CegarLoopResult]: For program point L82(lines 82 413) no Hoare annotation was computed. [2020-07-21 22:54:48,632 INFO L268 CegarLoopResult]: For program point L380(lines 380 413) no Hoare annotation was computed. [2020-07-21 22:54:48,632 INFO L268 CegarLoopResult]: For program point L314(lines 314 413) no Hoare annotation was computed. [2020-07-21 22:54:48,632 INFO L268 CegarLoopResult]: For program point L248(lines 248 413) no Hoare annotation was computed. [2020-07-21 22:54:48,632 INFO L268 CegarLoopResult]: For program point L215(lines 215 413) no Hoare annotation was computed. [2020-07-21 22:54:48,632 INFO L268 CegarLoopResult]: For program point L83(lines 83 89) no Hoare annotation was computed. [2020-07-21 22:54:48,632 INFO L268 CegarLoopResult]: For program point L50(lines 50 413) no Hoare annotation was computed. [2020-07-21 22:54:48,632 INFO L268 CegarLoopResult]: For program point L83-2(lines 83 89) no Hoare annotation was computed. [2020-07-21 22:54:48,632 INFO L268 CegarLoopResult]: For program point L579-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,633 INFO L268 CegarLoopResult]: For program point L546-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,633 INFO L268 CegarLoopResult]: For program point L513-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,633 INFO L268 CegarLoopResult]: For program point L480-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,633 INFO L268 CegarLoopResult]: For program point L414(lines 414 416) no Hoare annotation was computed. [2020-07-21 22:54:48,633 INFO L268 CegarLoopResult]: For program point L447-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,633 INFO L268 CegarLoopResult]: For program point L381(lines 381 387) no Hoare annotation was computed. [2020-07-21 22:54:48,633 INFO L268 CegarLoopResult]: For program point L414-2(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,633 INFO L268 CegarLoopResult]: For program point L315(lines 315 326) no Hoare annotation was computed. [2020-07-21 22:54:48,634 INFO L268 CegarLoopResult]: For program point L381-2(lines 381 387) no Hoare annotation was computed. [2020-07-21 22:54:48,634 INFO L268 CegarLoopResult]: For program point L315-2(lines 315 326) no Hoare annotation was computed. [2020-07-21 22:54:48,634 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,634 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,634 INFO L268 CegarLoopResult]: For program point L580(line 580) no Hoare annotation was computed. [2020-07-21 22:54:48,634 INFO L268 CegarLoopResult]: For program point L547(line 547) no Hoare annotation was computed. [2020-07-21 22:54:48,634 INFO L268 CegarLoopResult]: For program point L514(line 514) no Hoare annotation was computed. [2020-07-21 22:54:48,634 INFO L268 CegarLoopResult]: For program point L481(line 481) no Hoare annotation was computed. [2020-07-21 22:54:48,634 INFO L268 CegarLoopResult]: For program point L448(line 448) no Hoare annotation was computed. [2020-07-21 22:54:48,635 INFO L268 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-07-21 22:54:48,635 INFO L268 CegarLoopResult]: For program point L349(lines 349 413) no Hoare annotation was computed. [2020-07-21 22:54:48,635 INFO L268 CegarLoopResult]: For program point L283(lines 283 413) no Hoare annotation was computed. [2020-07-21 22:54:48,635 INFO L268 CegarLoopResult]: For program point L218(lines 218 413) no Hoare annotation was computed. [2020-07-21 22:54:48,635 INFO L268 CegarLoopResult]: For program point L185(lines 185 413) no Hoare annotation was computed. [2020-07-21 22:54:48,635 INFO L268 CegarLoopResult]: For program point L119(lines 119 413) no Hoare annotation was computed. [2020-07-21 22:54:48,635 INFO L268 CegarLoopResult]: For program point L582-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,635 INFO L268 CegarLoopResult]: For program point L549-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,635 INFO L268 CegarLoopResult]: For program point L516-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,636 INFO L268 CegarLoopResult]: For program point L483-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,636 INFO L268 CegarLoopResult]: For program point L450-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,636 INFO L268 CegarLoopResult]: For program point L417-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,636 INFO L268 CegarLoopResult]: For program point L54(lines 54 413) no Hoare annotation was computed. [2020-07-21 22:54:48,636 INFO L268 CegarLoopResult]: For program point L583(line 583) no Hoare annotation was computed. [2020-07-21 22:54:48,636 INFO L268 CegarLoopResult]: For program point L550(line 550) no Hoare annotation was computed. [2020-07-21 22:54:48,636 INFO L268 CegarLoopResult]: For program point L517(line 517) no Hoare annotation was computed. [2020-07-21 22:54:48,636 INFO L268 CegarLoopResult]: For program point L484(line 484) no Hoare annotation was computed. [2020-07-21 22:54:48,636 INFO L268 CegarLoopResult]: For program point L451(line 451) no Hoare annotation was computed. [2020-07-21 22:54:48,637 INFO L268 CegarLoopResult]: For program point L418(line 418) no Hoare annotation was computed. [2020-07-21 22:54:48,637 INFO L268 CegarLoopResult]: For program point L286(lines 286 413) no Hoare annotation was computed. [2020-07-21 22:54:48,637 INFO L268 CegarLoopResult]: For program point L253(lines 253 413) no Hoare annotation was computed. [2020-07-21 22:54:48,637 INFO L268 CegarLoopResult]: For program point L187(lines 187 413) no Hoare annotation was computed. [2020-07-21 22:54:48,637 INFO L268 CegarLoopResult]: For program point L154(lines 154 413) no Hoare annotation was computed. [2020-07-21 22:54:48,637 INFO L268 CegarLoopResult]: For program point L585-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,637 INFO L268 CegarLoopResult]: For program point L552-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,637 INFO L268 CegarLoopResult]: For program point L519-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,637 INFO L268 CegarLoopResult]: For program point L486-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,638 INFO L268 CegarLoopResult]: For program point L453-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,638 INFO L268 CegarLoopResult]: For program point L420-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,638 INFO L268 CegarLoopResult]: For program point L354(lines 354 413) no Hoare annotation was computed. [2020-07-21 22:54:48,638 INFO L268 CegarLoopResult]: For program point L189(lines 189 413) no Hoare annotation was computed. [2020-07-21 22:54:48,638 INFO L268 CegarLoopResult]: For program point L123(lines 123 413) no Hoare annotation was computed. [2020-07-21 22:54:48,638 INFO L268 CegarLoopResult]: For program point L586(line 586) no Hoare annotation was computed. [2020-07-21 22:54:48,638 INFO L268 CegarLoopResult]: For program point L553(line 553) no Hoare annotation was computed. [2020-07-21 22:54:48,638 INFO L268 CegarLoopResult]: For program point L520(line 520) no Hoare annotation was computed. [2020-07-21 22:54:48,638 INFO L268 CegarLoopResult]: For program point L487(line 487) no Hoare annotation was computed. [2020-07-21 22:54:48,639 INFO L268 CegarLoopResult]: For program point L454(line 454) no Hoare annotation was computed. [2020-07-21 22:54:48,639 INFO L268 CegarLoopResult]: For program point L421(line 421) no Hoare annotation was computed. [2020-07-21 22:54:48,639 INFO L268 CegarLoopResult]: For program point L223(lines 223 413) no Hoare annotation was computed. [2020-07-21 22:54:48,639 INFO L268 CegarLoopResult]: For program point L91(lines 91 413) no Hoare annotation was computed. [2020-07-21 22:54:48,639 INFO L268 CegarLoopResult]: For program point L389(lines 389 413) no Hoare annotation was computed. [2020-07-21 22:54:48,639 INFO L268 CegarLoopResult]: For program point L191(lines 191 413) no Hoare annotation was computed. [2020-07-21 22:54:48,639 INFO L268 CegarLoopResult]: For program point L59(lines 59 413) no Hoare annotation was computed. [2020-07-21 22:54:48,639 INFO L268 CegarLoopResult]: For program point L588-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,639 INFO L268 CegarLoopResult]: For program point L555-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,640 INFO L268 CegarLoopResult]: For program point L522-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,640 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 29 598) the Hoare annotation is: (let ((.cse3 (not (= 1 ~a21~0))) (.cse13 (= 1 |old(~a25~0)|)) (.cse14 (<= ~a11~0 |old(~a11~0)|)) (.cse18 (<= ~a17~0 |old(~a17~0)|)) (.cse8 (= ~a19~0 |old(~a19~0)|)) (.cse11 (<= |old(~a28~0)| ~a28~0)) (.cse17 (= ~a25~0 |old(~a25~0)|))) (let ((.cse2 (and .cse14 .cse18 .cse8 .cse11 .cse17)) (.cse6 (not .cse13)) (.cse12 (= 1 ~a25~0)) (.cse7 (<= ~a28~0 |old(~a28~0)|)) (.cse10 (= 8 ~a17~0)) (.cse15 (not (<= |old(~a28~0)| 9))) (.cse5 (not (= 8 |old(~a17~0)|))) (.cse4 (not (<= |old(~a11~0)| 0))) (.cse1 (not (<= |old(~a17~0)| 7))) (.cse0 (not (= 1 |old(~a19~0)|))) (.cse9 (or (<= ~a11~0 0) (< 0 |old(~a11~0)|) .cse3)) (.cse19 (not (<= 10 |old(~a28~0)|))) (.cse16 (not (< |old(~a28~0)| 11)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse0 .cse5 .cse6 (and .cse7 .cse8 .cse9 .cse10 .cse11 .cse12)) (or (and .cse13 (not (< 9 |old(~a28~0)|))) .cse2 .cse1 (not (< 8 |old(~a28~0)|)) .cse3 .cse4) (or .cse14 .cse5 .cse15 .cse3 .cse4) (or .cse14 .cse5 .cse6 .cse3 .cse4 .cse16) (or .cse5 (and .cse7 .cse8 .cse10 .cse11 .cse12) .cse6 .cse16) (or .cse15 .cse6 .cse1 (and .cse7 (= ~a17~0 |old(~a17~0)|) .cse8 .cse9 .cse11 .cse12)) (or (and .cse7 .cse8 .cse10 .cse11 .cse17) .cse5 .cse15) (or .cse0 .cse14 (not (= 10 |old(~a28~0)|)) .cse5 (and (not (= 6 |calculate_output_#in~input|)) (not (= 1 |calculate_output_#in~input|)) (not (= 4 |calculate_output_#in~input|)) (not (= 5 |calculate_output_#in~input|)) (not (= 3 |calculate_output_#in~input|))) .cse3 .cse4) (or (and .cse18 .cse8 .cse11 .cse17) .cse1 .cse19) (or .cse0 (not (<= 8 |old(~a17~0)|)) (and .cse18 (<= 8 ~a17~0) (< ~a28~0 11) .cse8 .cse9 .cse11 .cse17) .cse19 .cse16)))) [2020-07-21 22:54:48,640 INFO L268 CegarLoopResult]: For program point L489-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,640 INFO L268 CegarLoopResult]: For program point L456-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,640 INFO L268 CegarLoopResult]: For program point L423-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,641 INFO L268 CegarLoopResult]: For program point L291(lines 291 413) no Hoare annotation was computed. [2020-07-21 22:54:48,641 INFO L268 CegarLoopResult]: For program point L225(lines 225 413) no Hoare annotation was computed. [2020-07-21 22:54:48,641 INFO L268 CegarLoopResult]: For program point L159(lines 159 413) no Hoare annotation was computed. [2020-07-21 22:54:48,641 INFO L268 CegarLoopResult]: For program point L589(line 589) no Hoare annotation was computed. [2020-07-21 22:54:48,641 INFO L268 CegarLoopResult]: For program point L556(line 556) no Hoare annotation was computed. [2020-07-21 22:54:48,641 INFO L268 CegarLoopResult]: For program point L523(line 523) no Hoare annotation was computed. [2020-07-21 22:54:48,641 INFO L268 CegarLoopResult]: For program point L490(line 490) no Hoare annotation was computed. [2020-07-21 22:54:48,641 INFO L268 CegarLoopResult]: For program point L457(line 457) no Hoare annotation was computed. [2020-07-21 22:54:48,642 INFO L268 CegarLoopResult]: For program point L424(line 424) no Hoare annotation was computed. [2020-07-21 22:54:48,642 INFO L268 CegarLoopResult]: For program point L259(lines 259 413) no Hoare annotation was computed. [2020-07-21 22:54:48,642 INFO L268 CegarLoopResult]: For program point L293(lines 293 413) no Hoare annotation was computed. [2020-07-21 22:54:48,642 INFO L268 CegarLoopResult]: For program point L194(lines 194 413) no Hoare annotation was computed. [2020-07-21 22:54:48,642 INFO L268 CegarLoopResult]: For program point L95(lines 95 413) no Hoare annotation was computed. [2020-07-21 22:54:48,642 INFO L268 CegarLoopResult]: For program point L591-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,642 INFO L268 CegarLoopResult]: For program point L558-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,642 INFO L268 CegarLoopResult]: For program point L525-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,643 INFO L268 CegarLoopResult]: For program point L492-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,643 INFO L268 CegarLoopResult]: For program point L459-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,643 INFO L268 CegarLoopResult]: For program point L426-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,643 INFO L268 CegarLoopResult]: For program point L261(lines 261 413) no Hoare annotation was computed. [2020-07-21 22:54:48,643 INFO L268 CegarLoopResult]: For program point L30(lines 30 413) no Hoare annotation was computed. [2020-07-21 22:54:48,643 INFO L268 CegarLoopResult]: For program point L592(line 592) no Hoare annotation was computed. [2020-07-21 22:54:48,643 INFO L268 CegarLoopResult]: For program point L559(line 559) no Hoare annotation was computed. [2020-07-21 22:54:48,643 INFO L268 CegarLoopResult]: For program point L526(line 526) no Hoare annotation was computed. [2020-07-21 22:54:48,643 INFO L268 CegarLoopResult]: For program point L493(line 493) no Hoare annotation was computed. [2020-07-21 22:54:48,644 INFO L268 CegarLoopResult]: For program point L460(line 460) no Hoare annotation was computed. [2020-07-21 22:54:48,644 INFO L268 CegarLoopResult]: For program point L427(line 427) no Hoare annotation was computed. [2020-07-21 22:54:48,644 INFO L268 CegarLoopResult]: For program point L394(lines 394 413) no Hoare annotation was computed. [2020-07-21 22:54:48,644 INFO L268 CegarLoopResult]: For program point L361(lines 361 413) no Hoare annotation was computed. [2020-07-21 22:54:48,644 INFO L268 CegarLoopResult]: For program point L328(lines 328 413) no Hoare annotation was computed. [2020-07-21 22:54:48,644 INFO L268 CegarLoopResult]: For program point L262(lines 262 274) no Hoare annotation was computed. [2020-07-21 22:54:48,644 INFO L268 CegarLoopResult]: For program point L262-2(lines 262 274) no Hoare annotation was computed. [2020-07-21 22:54:48,644 INFO L268 CegarLoopResult]: For program point L130(lines 130 413) no Hoare annotation was computed. [2020-07-21 22:54:48,645 INFO L268 CegarLoopResult]: For program point L65(lines 65 413) no Hoare annotation was computed. [2020-07-21 22:54:48,645 INFO L268 CegarLoopResult]: For program point L594-1(lines 594 596) no Hoare annotation was computed. [2020-07-21 22:54:48,645 INFO L268 CegarLoopResult]: For program point L561-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,645 INFO L268 CegarLoopResult]: For program point L528-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,645 INFO L268 CegarLoopResult]: For program point L495-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,645 INFO L268 CegarLoopResult]: For program point L462-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,645 INFO L268 CegarLoopResult]: For program point L429-1(lines 29 598) no Hoare annotation was computed. [2020-07-21 22:54:48,645 INFO L268 CegarLoopResult]: For program point L297(lines 297 413) no Hoare annotation was computed. [2020-07-21 22:54:48,645 INFO L268 CegarLoopResult]: For program point L198(lines 198 413) no Hoare annotation was computed. [2020-07-21 22:54:48,646 INFO L268 CegarLoopResult]: For program point L165(lines 165 413) no Hoare annotation was computed. [2020-07-21 22:54:48,646 INFO L268 CegarLoopResult]: For program point L99(lines 99 413) no Hoare annotation was computed. [2020-07-21 22:54:48,646 INFO L268 CegarLoopResult]: For program point L595(line 595) no Hoare annotation was computed. [2020-07-21 22:54:48,646 INFO L268 CegarLoopResult]: For program point L562(line 562) no Hoare annotation was computed. [2020-07-21 22:54:48,646 INFO L268 CegarLoopResult]: For program point L529(line 529) no Hoare annotation was computed. [2020-07-21 22:54:48,646 INFO L268 CegarLoopResult]: For program point L496(line 496) no Hoare annotation was computed. [2020-07-21 22:54:48,646 INFO L268 CegarLoopResult]: For program point L463(line 463) no Hoare annotation was computed. [2020-07-21 22:54:48,646 INFO L268 CegarLoopResult]: For program point L430(line 430) no Hoare annotation was computed. [2020-07-21 22:54:48,646 INFO L268 CegarLoopResult]: For program point L331(lines 331 413) no Hoare annotation was computed. [2020-07-21 22:54:48,647 INFO L268 CegarLoopResult]: For program point L298(lines 298 307) no Hoare annotation was computed. [2020-07-21 22:54:48,647 INFO L268 CegarLoopResult]: For program point L232(lines 232 413) no Hoare annotation was computed. [2020-07-21 22:54:48,647 INFO L268 CegarLoopResult]: For program point L298-2(lines 298 307) no Hoare annotation was computed. [2020-07-21 22:54:48,647 INFO L268 CegarLoopResult]: For program point L398(lines 398 413) no Hoare annotation was computed. [2020-07-21 22:54:48,647 INFO L268 CegarLoopResult]: For program point L332(lines 332 335) no Hoare annotation was computed. [2020-07-21 22:54:48,647 INFO L268 CegarLoopResult]: For program point L332-2(lines 332 335) no Hoare annotation was computed. [2020-07-21 22:54:48,647 INFO L268 CegarLoopResult]: For program point L134(lines 134 413) no Hoare annotation was computed. [2020-07-21 22:54:48,647 INFO L268 CegarLoopResult]: For program point L35(lines 35 413) no Hoare annotation was computed. [2020-07-21 22:54:48,647 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:54:48,648 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= 1 ~a19~0) (<= ~a11~0 0) (<= ~a25~0 0) (= 7 ~a28~0) (= 1 ~a21~0) (= 8 ~a17~0)) [2020-07-21 22:54:48,648 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 22:54:48,648 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:54:48,648 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 600 617) the Hoare annotation is: (or (not (= 1 |old(~a19~0)|)) (not (= 8 |old(~a17~0)|)) (not (<= |old(~a25~0)| 0)) (not (= 7 |old(~a28~0)|)) (not (= 1 ~a21~0)) (not (<= |old(~a11~0)| 0)) (and (<= ~a11~0 |old(~a11~0)|) (<= ~a28~0 |old(~a28~0)|) (= ~a19~0 |old(~a19~0)|) (= 8 ~a17~0) (<= |old(~a28~0)| ~a28~0) (= ~a25~0 |old(~a25~0)|))) [2020-07-21 22:54:48,648 INFO L264 CegarLoopResult]: At program point L606-2(lines 606 616) the Hoare annotation is: (let ((.cse2 (< ~a28~0 11)) (.cse5 (= 1 ~a19~0)) (.cse0 (<= ~a11~0 0)) (.cse6 (<= 10 ~a28~0)) (.cse3 (= 8 ~a17~0)) (.cse1 (<= ~a17~0 7)) (.cse4 (= 1 ~a25~0))) (or (not (= 1 |old(~a19~0)|)) (and (< 8 ~a28~0) .cse0 .cse1) (and .cse2 .cse3 .cse4) (and .cse5 (<= ~a17~0 |old(~a17~0)|) .cse2 .cse6) (not (= 7 |old(~a28~0)|)) (and .cse5 .cse3 .cse4) (and .cse5 .cse0 .cse1) (and .cse1 .cse6) (not (= 1 ~a21~0)) (and (<= ~a28~0 9) .cse3) (not (<= |old(~a11~0)| 0)) (and .cse1 .cse4) (not (= 8 |old(~a17~0)|)) (not (<= |old(~a25~0)| 0)))) [2020-07-21 22:54:48,648 INFO L268 CegarLoopResult]: For program point L606-3(lines 600 617) no Hoare annotation was computed. [2020-07-21 22:54:48,649 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 600 617) no Hoare annotation was computed. [2020-07-21 22:54:48,649 INFO L264 CegarLoopResult]: At program point L614(line 614) the Hoare annotation is: (let ((.cse2 (< ~a28~0 11)) (.cse5 (= 1 ~a19~0)) (.cse0 (<= ~a11~0 0)) (.cse6 (<= 10 ~a28~0)) (.cse3 (= 8 ~a17~0)) (.cse1 (<= ~a17~0 7)) (.cse4 (= 1 ~a25~0))) (or (not (= 1 |old(~a19~0)|)) (and (< 8 ~a28~0) .cse0 .cse1) (and .cse2 .cse3 .cse4) (and .cse5 (<= ~a17~0 |old(~a17~0)|) .cse2 .cse6) (not (= 7 |old(~a28~0)|)) (and .cse5 .cse3 .cse4) (and .cse5 .cse0 .cse1) (and .cse1 .cse6) (not (= 1 ~a21~0)) (and (<= ~a28~0 9) .cse3) (not (<= |old(~a11~0)| 0)) (and .cse1 .cse4) (not (= 8 |old(~a17~0)|)) (not (<= |old(~a25~0)| 0)))) [2020-07-21 22:54:48,649 INFO L268 CegarLoopResult]: For program point L614-1(line 614) no Hoare annotation was computed. [2020-07-21 22:54:48,649 INFO L268 CegarLoopResult]: For program point L611(line 611) no Hoare annotation was computed. [2020-07-21 22:54:48,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:54:48 BoogieIcfgContainer [2020-07-21 22:54:48,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:54:48,672 INFO L168 Benchmark]: Toolchain (without parser) took 24166.92 ms. Allocated memory was 145.2 MB in the beginning and 491.3 MB in the end (delta: 346.0 MB). Free memory was 102.4 MB in the beginning and 112.9 MB in the end (delta: -10.5 MB). Peak memory consumption was 340.1 MB. Max. memory is 7.1 GB. [2020-07-21 22:54:48,673 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 22:54:48,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.23 ms. Allocated memory was 145.2 MB in the beginning and 207.1 MB in the end (delta: 61.9 MB). Free memory was 102.0 MB in the beginning and 176.6 MB in the end (delta: -74.6 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. [2020-07-21 22:54:48,674 INFO L168 Benchmark]: Boogie Preprocessor took 127.87 ms. Allocated memory is still 207.1 MB. Free memory was 176.6 MB in the beginning and 171.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2020-07-21 22:54:48,675 INFO L168 Benchmark]: RCFGBuilder took 1267.56 ms. Allocated memory was 207.1 MB in the beginning and 240.6 MB in the end (delta: 33.6 MB). Free memory was 171.5 MB in the beginning and 187.8 MB in the end (delta: -16.2 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. [2020-07-21 22:54:48,676 INFO L168 Benchmark]: TraceAbstraction took 21996.00 ms. Allocated memory was 240.6 MB in the beginning and 491.3 MB in the end (delta: 250.6 MB). Free memory was 187.8 MB in the beginning and 112.9 MB in the end (delta: 74.9 MB). Peak memory consumption was 330.0 MB. Max. memory is 7.1 GB. [2020-07-21 22:54:48,680 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 767.23 ms. Allocated memory was 145.2 MB in the beginning and 207.1 MB in the end (delta: 61.9 MB). Free memory was 102.0 MB in the beginning and 176.6 MB in the end (delta: -74.6 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.87 ms. Allocated memory is still 207.1 MB. Free memory was 176.6 MB in the beginning and 171.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1267.56 ms. Allocated memory was 207.1 MB in the beginning and 240.6 MB in the end (delta: 33.6 MB). Free memory was 171.5 MB in the beginning and 187.8 MB in the end (delta: -16.2 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21996.00 ms. Allocated memory was 240.6 MB in the beginning and 491.3 MB in the end (delta: 250.6 MB). Free memory was 187.8 MB in the beginning and 112.9 MB in the end (delta: 74.9 MB). Peak memory consumption was 330.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 490]: 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: 606]: Loop Invariant Derived loop invariant: ((((((((((((!(1 == \old(a19)) || ((8 < a28 && a11 <= 0) && a17 <= 7)) || ((a28 < 11 && 8 == a17) && 1 == a25)) || (((1 == a19 && a17 <= \old(a17)) && a28 < 11) && 10 <= a28)) || !(7 == \old(a28))) || ((1 == a19 && 8 == a17) && 1 == a25)) || ((1 == a19 && a11 <= 0) && a17 <= 7)) || (a17 <= 7 && 10 <= a28)) || !(1 == a21)) || (a28 <= 9 && 8 == a17)) || !(\old(a11) <= 0)) || (a17 <= 7 && 1 == a25)) || !(8 == \old(a17))) || !(\old(a25) <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 236 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.2s, OverallIterations: 10, TraceHistogramMax: 5, AutomataDifference: 12.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 880 SDtfs, 5017 SDslu, 711 SDs, 0 SdLazy, 8226 SolverSat, 1283 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2684 GetRequests, 2577 SyntacticMatches, 7 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2805occurred 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: 0.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 868 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 126 PreInvPairs, 170 NumberOfFragments, 656 HoareAnnotationTreeSize, 126 FomulaSimplifications, 3247 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 7 FomulaSimplificationsInter, 5075 FormulaSimplificationTreeSizeReductionInter, 2.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 1632 NumberOfCodeBlocks, 1106 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2617 ConstructedInterpolants, 0 QuantifiedInterpolants, 1616063 SizeOfPredicates, 39 NumberOfNonLiveVariables, 3557 ConjunctsInSsa, 137 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 1187/1234 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...